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HA12155NT/HA12157NT

Audio Signal Processor for Cassette Deck (Dolby B/C-type NRwith Recording System)

ADE-207-115C (Z)

4th EditionJune 1997

Description

HA12155NT/HA12157NT is silicon monolithic bipolar IC providing Dolby noise reduction system*,electrical volume system, REC equalizer system and level meter system in one chip.

Functions

• REC equalizer × 2 channel

• Dolby B/C NR × 2 channel

• Electronic volume × 2 channel

• Level Meter × 2 channel

Features

• Inductor less REC equalizer is adjustable of its characteristics by external resistor

• Rec level is adjustable automatically with electrical volume which is built-in

• 3 type of input selection is available (one is by way of electrical volume)

• Separate input selection SW and REC/PB SW

• Dolby noise reduction with dubbing cassette decks

(Unprocessed signal output available from recording out terminals during PB mode)

• Log-compressed level meter output is range from 0 V to 5 V

(Usable as music search switchable gain of 0 dB and 20 dB respectivily)

• Normal-speed/high-speed (Double), normal/metal/chrome fully electronic control switching built-in

• NR-ON/OFF, Dolby B/C, MPX ON/OFF fully electronic control switching built-in

(Controllable from micro-controller directly)

• Reduction of number of pin by transfered serial data to electronic volume control switching and anothercontrol switching

(Controllable from micro-controller directly)

• Low external parts count

查询HA12155供应商捷多邦，专业PCB打样工厂，24小时加急出货

http://www.dzsc.com/icstock/122/HA12155.html

http://www.jdbpcb.com/J/

http://pdf.dzsc.com/

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 2 of 57

* Dolby is a trademark of Dolby Laboratories Licensing Corporation.A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.

Ordering Information

Operating voltage

Type Package Dolby Level REC-OUT Level PB-OUT Level Min Max

HA12155NT DP-64S 300 mVrms 300 mVrms 580 mVrms 9.5 V 16 V

HA12157NT 775 mVrms 12 V 16 V

HA12155NT/HA12157NT


Block Diagram

DA

TA

CLK

ST

BG

ND

(1)

VR

I (

L)C

NT

(L)

RP

I (

L)B

IAS

PB

I (

L)D

GN

D

IA O

UT

(L)

NR

IN (

L)

PB

OU

T

(L

)

RE

CO

UT

(L)

LM

IN(L

)

LM

OU

T(L

)

EQ

IN(L

)GN

D (

2) E

QO

UT

(L)

NN

NC

NM

HN

HC

HM

EQ

-Con

trol

ler

FM

fQf/Q

GH

GL

GP

EQ

OU

T(R

)IR

EF

EQ

IN(R

)

LM

OU

T(R

)

LM

IN

(R)

RE

C

OU

T(R

)

PB

OU

T (

R)

Vre

f (

R)

NR

IN (

R)

IA O

UT

(R

)IN

JP

BI

(R

)R

EF

RP

I (

R)

CN

T (

R)

VR

I (

R)

V CC

MP

XO

N/O

FF

C/B

N

RO

N/O

FF

BIA

S6B

ITD

AC

SW

IAIA

E V

OL

6BIT

DA

C

Shi

ftre

gist

er

Latc

h

Dec

oder

Dol

by B

/C N

R

RE

CT

RE

CE

Q

RE

CT

LMA

LMA

+ – +–

RE

CE

Q

M P X

6463

6160

5958

5756

5554

5352

5150

4948

4746

4544

4342

4140

3938

3736

3534

33

45

67

89

1011

1213

1415

1617

1819

2021

2223

2425

2627

2829

3031

323

21

62

Vre

f (

L)

M P X

Dol

by B

/C N

R

E V

OL

HA12155NT/HA12157NT


Absolute Maximum Ratings

Item Symbol Ratings Unit

Supply voltage VCC 16 V

Power dissipation*1 Pd 770 mW

Operating temperature Topr –30 to +75 °C

Storage temperature Tstg –55 to +125 °C

Note: 1. Value at Ta ≤ 75°C

Electrical Characteristics (Ta = 25°C VCC = 14 V Dolby level 300 mVrms)

Item Symbol Min Typ Max Unit Test conditions Notes

Quiescent current IQ — 29.0 37.0 mA no signal

Input amp gain GVIA RPI 18.5 20.0 21.5 dB Vin = 0 dB, f = 1 kHz

GVIA PBI 18.5 20.0 21.5

B-type NR Encode Boost B-ENC-2K 2.8 4.3 5.8 dB Vin = –20 dB, f = 2 kHz

B-ENC-5K 1.7 3.2 4.7 Vin = –20 dB, f = 5 kHz

C-type NR Encode Boost C-ENC-1K(1) 3.9 5.9 7.9 dB Vin = –20 dB, f = 1 kHz

C-ENC-1K(2) 18.1 19.6 21.6 Vin = –60 dB, f = 1 kHz

C-ENC-700 9.8 11.8 13.8 Vin = –30 dB, f = 700 Hz

Signal handling Vomax 12.0 13.0 — dB f = 1 kHz, THD = 1%,VCC = 12 V

*1

Signal to noise ratio S/N 60.0 63.0 — dB Rg = 5.1 kΩ, CCIR/ARM

Total harmonic distortion THD — 0.08 0.3 % Vin = 0 dB, f = 1 kHz

Crosstalk CT (R↔L) — –85.0 –79.0 dB Vin = 0 dB, f = 1 kHz

CT (RPI↔PBI) — –80.0 –74.0

CT (VRI↔RPI) — –77.0 –71.0

Control Hi level VcH 3.5 — 5.3 V MPX ON/OFF, NR

voltage Lo level VcL –0.2 — 1.0 ON/OFF C-NR/B-NR

Serial data Hi level VsH 3.5 — 5.3 V CLK, DATA, STB

voltage Lo level VsL –0.2 — 1.0

PB-out level HA12155 Vout 500 580 670 mVrms Vin = 0 dB, f = 1 kHz

HA12157 665 775 900

PB-offset Vofs –100 0.0 +100 mV no signal

Channel balance ∆GV –1.0 0.0 1.0 dB Vin = 0 dB, f = 1 kHz

Volume gain GVVR (MAX) 17.5 19.3 21.5 dB Vin = 100 mVrms, f =1 kHz

GVVR (MIN) — — –55.0 Vin = 3 Vrms, f = 1 kHz

HA12155NT/HA12157NT


Electrical Characteristics (Ta = 25°C VCC = 14 V Dolby level 300 mVrms) (cont)

Item Symbol Min Typ Max Unit Test conditions Notes

Volume mute GVVR (MUT) — — –80.0 dB Vin = 3 Vrms, f = 1 kHz

Max-input level to volume Vin max (VR) 11.0 12.6 — dBs f = 1 kHz, THD = 1%,VCC = 12 V

Volume S/N S/N (VR) 78.0 84.0 — dB Vin = 100 mVrms, f = 1kHz, A-WTG

Volume THD THD (VR) — 0.04 0.3 % Vin = 100 mVrms, f = 1kHz

Equalizer gain GV EQ (500) 13.0 15.0 17.0 dB Vin = 77.5 mVrms,f = 500 Hz

GV EQ (1K) 13.0 15.0 17.0 Vin = 77.5 mVrms,f = 1 kHz




Equalizer maximum input Vin max (EQ) –8.0 –7.0 — dBs f = 1 kHz, THD = 1%,VCC = 12 V

*1

Equalizer S/N S/N (EQ) 57.0 62.0 — dB Rg = 5.1 kΩ, A-WTG

Equalizer THD THD (EQ) — 0.2 0.5 % Vin = 77.5 mVrms,f = 1 kHz

Equalizer offset Vofs (EQ) –400 0.0 +400 mV no signal

Level meter output LM (0 dB) 2.60 2.85 3.10 V Vin = 0 dB, f = 1 kHz *2

LM (12 dB) 3.60 3.90 4.20 V Vin = 12 dB, f = 1 kHz

Level meter output LM (–20 dB)1 0.80 1.10 1.40 V Vin = –20 dB, f = 1 kHz *2

LM (–20 dB)2 2.55 3.0 3.15 V Vin = –20 dB, f = 1 kHz,–20 dB range

Level meter offset LMofs 1 — 150 300 mV no signal

LMofs 2 — 200 350 no signal, –20 dB range

Notes: 1. HA12155 VCC = 9.5 V, HA12157 VCC = 12 V2. 0 dB = PB-OUT level

HA12155NT/HA12157NT


Test Circuit

Mod

e co

ntro

ller

AC

VM

2

DC

VM

2

AC

VM

3

EQ PB

RP

VR

SW

4

µ

µ

µ

µ

µµ

µ

µµ

µµ µ

µµ

µµ

µµ

µ

µµ

µ

µµ

µ

Ω

µ

Aud

io S

GA

C V

M 1

D

CS

ourc

e 1

D

CS

ourc

e 2

D

CS

ourc

e 3

AC

VM

4D

isto

rtion

anal

yzer

Noi

se m

eter

R4

10 k

R5

10k

R6

10 k

R67

5.1

kR

665.

1 k

C3

0.47

10.

47

C33

C2

R29

18 k

C1

0.47

Deg

ital

GN

DSW

8

TP

3T

P4

OF

FS

W25

ON

R27

2.4

kR

265.

6 k

R25

10 k

C30

2.2

C28

C29

2200

p22

00p

R24

22 k

R23

560

C27

C26

C25

2200

p0.

10.

1

R21

20 k

C23

0.1

C24

2.2

C22

1

R20

100

kR

7151

k

R22

7.5

k

C21

0.47

4.7C20

R19

10 k

PB

RE

C

EQ

SW

12

SW

14 L

LM

EQ

RE

CPB

ON

OF

F

SW

16

R1

22 k

R2

22 k

R3

22 k

SW

18S

W19

SW

20

OF

FO

Nc

bO

N

SW

21S

W23

S2

S3

S2

S3

L ON

SW

3V

R RP

PB

EQ

OF

F

SW

1

R30

R31

R32

R33

R34

R35

R36

R37

R38

R39

R40

R41

R42

R43

R44

R45

R46

R47

R48

R49

R50

R51

R52

R53

R54

R55

R56

R57

R58

R59

R60

C4

C5

C6

C7

C8

0.47

1

R68

5.1

kR

695.

1 k

R7

10 k

R9

2.4

kR

105.

6 k

OF

F

SW

24

ON

TP

2T

P1

SW

7

R11

22 k

R13

560

C9

C10

2200

p22

00 p

C11

2.2

+

R12

10 k

C12

C13

C14

2200

p0.

10.

1

C15

+ 2.2 R14

20 k R75

16 k

+C

16

0.1 C

17 1R

1610

0 k

C18

0.47

R17

24 k

C19

4.7

R18

10 k

100k

51 k

51 k

33 k

33 k

33 k

EQ

RE

C PB

SW

11 RL SW

17LM

EQ

RE

CP

B

SW

13

NR

ON

/OF

FC

/B M

PX

ON

/OF

FV

CC

VR

I (

R)

CN

T (

R)

RP

I (

R)

RE

FIN

JIA

OU

T

(R)

NR

IN (

R)

V (R

)P

BO

UT

(R

)S

S1

(R

)S

S2

(R

)C

CR

(R

) H

LSD

ET

(R)

RE

CO

UT

(R) L

MIN

(R)

LM

DE

T(R

) L

MO

UT

(R) E

QIN

(R)

IRE

FP

BI

(R

) E

QO

UT

(R) F

MF

QF

/QG

HG

LG

P

IA O

UT

(L

)N

RIN

(L)

V (L)

PB

OU

T (

L)S

S1

(L)

SS

2 (

L)C

CR

(L)

HLS

DE

T(L

) R

EC

OU

T(L

) L

MIN

(L)

LM

DE

T(L

) L

MO

UT

(L)

PB

I (

L) E

QIN

(L)

EQ

OU

T(L

)G

ND

(2)

NN

NC

NM

HN

HC

HM

6463

6261

6059

5857

5655

5453

5251

5049

4847

4645

4443

4241

4039

3837

3635

3433

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

2526

2728

3031

32

DA

TA

CLK

ST

BG

ND

(1)

VR

I (

L)C

NT

(L)

RP

I (

L)B

IAS

DG

ND

3

++

++

++

HA

1215

5/7

NT

(R

EC

1 C

HIP

)D

P-6

4S

R15

7.5

k

14 V

5 V

R

++

++

+

0.47

C32

100

Not

es 1

: Reg

isto

r to

lera

nce

are

±1

%

2:

Cap

acito

r to

lera

nce

are

±1

%

3:

Uni

t R:

C

:F

+

+

R28

10 k

+

RE

F

RE

F

R72

16 k

+

LS

W10

SW

9

R70

51k

LLS

DE

T(L

)

LLS

DE

T(R

)

S2

S3O

FF

Osc

illos

cope

Noi

se m

eter

with

CC

IR/A

RM

filte

ran

d A

–WT

G fi

lter

0.47

1

C60 10

p

C61 10

p

C62

10p

R8

1.2

k

29

SW

22

SW

15

R

+

R61

R62

R63

R64

R65

+

HA12155NT/HA12157NT


Example of Split Supply Circuit

0.47

µ

CN

1

ST

B

CLK

DA

TA

DG

ND

C/B

MP

XO

N/O

FF

NR

ON

/OF

FV

CC

2(+

5 V

)

1 2 3 4 5 6 7 8

PB

I (L)

RP

I (L)

VR

I (L)

R4

10 k

R5

10 k

R6

10 k

C3

++

1µ

+0.

47µ

C33

C2

R67

5.1

kR

665.

1 k

R28

10

k

R29

18 k

C1

0.47

µ

Deg

ital G

ND

R27

2.4

kR

265.

6 k

R24

22 k

R23

560

C29

C28

C30

2.2

µ

+

+

R25

10 k

2200

p 2

200

pC

27

2200

p

C26

C25

0.1

µ0.

1µ

2.2

µ

C24R21

20 k

C23

0.1

µ+

+C22

1µ

R20

100

kR

71 5

1 k +

C21

0.47

µ+

C20

0.47

µ

R22

7.5

k

R19

10

k

EQ

OU

T (

L)

LMO

UT

(L)

PB

OU

T (

L)

RE

CO

UT

(L)

EQ

IN (

L)R

7216

k

TP

3

TP

4

R1

22 k

R2

22 k

R3

22 k

0.47

µ

C4

+C

5C

6C

7C

8+

++

+

1µ

0.47

µ1

µ0.

47µ

R68

5.1

kR

695.

1 k

R7

10

k

R8

R9

2.4

kR

105.

6 k

R11

22 k

R13

560

C9

C10

C11

2.2

µ

R12

10

k

+22

00 p

2200

p

2200

p

C12

C13

C14

C15

C16 C

17

C18

C19

0.1

µ0.

1µ

2.2

µ+ R14

20

k

0.1

µ 1µ

R16

100

k

R75

16 k

EQ

IN (

R)

RE

CO

UT

(R

)

PB

OU

T (

R)

R70

51 kR

157.

5 k

R18

10 k+ 4.7

µ

R30

R36

R42

R48

R54

R60

R31

R37

R43

R49

R55

R61

R32

R38

R44

R50

R56

R62

R33

R39

R45

R51

R57

R63

R34

R40

R46

R52

R58

R64

R35

R41

R47

R53

R59

R65

100

k51

k51

k33

k33

k33

k

EQ

OU

T (

R)

LMO

UT

(R

)

TP

2

TP

1

VR

I (R

)

RP

I (R

)

RB

I (R

)

CN

2

C34

100

µ

+

+C

3210

0µ

GN

D

VE

E

VC

C1

1 2 3

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

2526

2728

2930

3132

6463

6261

6059

5857

5655

5453

5251

5049

4847

4645

4443

4241

4039

3837

3635

3433

DA

TA

CLK

ST

BG

ND

(1)

VR

I(L

)C

NT

(L)

RP

I(L

)B

IAS

PB

I(L

)D

GN

DIA

OU

T(L

)N

RIN

(L)

Vre

f(L

)P

BO

UT

(L)

SS

1(L

)S

S2

(L)

CC

R(L

)H

LSD

ET

(L)

LLS

DE

T (

L)R

EC

OU

T (

L)LM

IN (

L)LM

DE

T (

L)LM

OU

T (

L)E

QIN

(L)

GN

D(2

)E

QO

UT

(L)

NN

NC

NM

HN

HC

HM

NR

ON

/OF

FC

/BM

PX

ON

/OF

FV

CC

VR

I(R

)C

NT

(R)

PR

I(R

)R

EF

PB

I(R

)IN

JIA

OU

T(R

)N

RIN

(R)

Vre

f(R

)P

BO

UT

(R)

SS

1(R

)S

S2

(R)

CC

R(R

)H

LSD

ET

(R

)LL

SD

ET

(R

)R

EC

OU

T (

R)

LMIN

(R

)LM

DE

T (

R)

LMO

UT

(R

)E

QIN

(R

)IR

EF

EQ

OU

T (

R)

FM

FQ

FQ

GH

GL

GP

HA

1215

5/7

(RE

C 1

CH

IP)

DP

-64S

R17

++

0.47

µ*1

Not

e 1:

The

pin

10

can

conn

ect t

o V

1

thro

ugh

R8.

The

val

ue o

f ext

erna

l res

isto

r R

8 is

obt

aine

d by

usi

ng fo

llow

ing

equa

tions

.

3.6

V

– V

–

0.7

INJ

EE

R8

=

(k

)Ω

CC

C62

10p

C61

10p

C60

10p

HA12155NT/HA12157NT


Mode Controller

GN

DV

(+5

V)

CC

C10

0µ

R2

4

R1

22 k

22 k

R1

M3

C1

2.2

µ

Q Q

SW

9

X'ta

l OS

C

N11

IC8

N12

IC8

R22

X'ta

l1

MH

z

C2

10 p

C3

120

p

R4

510

CLR

QA

QB

QC

QD

62.5

kH

z12

5 kH

z25

0 kH

z50

0 kH

z

R7

22 k

R8

22 k

R9

22 k

R10

22 k

R11

22 k

R12

22 k

R13

22 k

R14

22 k

SW

8S

W7

SW

6S

W5

SW

4S

W3

SW

2S

W1

AB

CD

EF

GH

D

IC4

7

CLK

CLK

INH

IBIT

SH

IFT

LOA

DQ

H

SW

10MC

LK

D

IC2

2D

IC

21

TR

IGG

ER

IC

1

CLR

TR

IGG

ER

Q QC

LR

PR

DQ Q

CLR

PR

D

R 22 K4

R 22 K5

N13

IC8

N1

IC6

N5

IC8

QC

LRA

QB

QC

QD

D

IC3

D

IC9

Q QC

LR

PR

D

R 22 k17

N3

IC6

N4

IC8

N6

IC6

D

IC5

6D

IC

55

D

IC5

4Q Q

CLR

DQ Q

CLR

DQ Q

CLR

D N7

IC6

N9

IC7

N10

IC7

DA

TA

CLK

V

(+

5 V

)

GN

D

ST

B

MP

X•O

N/O

FF

C/B

NR

•ON

/OF

F

CC

N8

IC7

JP1

JP2

JP3

1 6 5

SW

1S

W2

SW

3+

3

N2

IC8

9

D

IC3

8

1M1 4 8 2 3

Not

es 1

: HC

type

IC w

hich

ope

rate

eqa

ully

is a

lso

appl

icab

le in

stea

d of

IC1-

IC9.

2: A

s fo

r IC

1-IC

9, in

put p

ins

whi

ch a

re n

ot u

sed

shou

ld b

e pu

lled

up w

ith r

esis

tor

of 2

2 k

.

3: A

s fo

r IC

1-IC

9, r

equi

red

to p

ut 0

.1

F-c

apac

itor

betw

een

near

GN

D p

in a

nd V

olta

ge s

ourc

e pi

n fo

r by

pass

.

Ω

µ

Par

ts N

o.

IC1

IC2

IC3

IC4

IC5

IC6

IC7

IC8

IC9

Typ

e

HD

74H

C22

1

HD

74H

C74

HD

74H

C39

3

HD

74H

C16

5

HD

74H

C17

5H

D74

HC

00

HD

74H

C00

HD

74H

C04

HD

74H

C74

4: U

nit R

:

, C

: F

Ω

+

HA12155NT/HA12157NT


Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typicalvalue)

Pin No. Terminal DC

DP-64S name Zin voltage Equivalent circuit Description

7 RPI 100 kΩ VCC/2 Recording input

58

9 PBI Play back input

56

21 LM IN HA12155---75 kΩ

Level meter input

44 HA12157---100 kΩ

24 EQ IN 100 kΩ Equalyzer input

41

5 VRI 100 kΩ VCC/2 Volume input

60 +0.7 V

4 VCC — VCC — Power supply

8 REF — VCC/2 — Ripple filter

12 NR IN — VCC/2 NR processor input

53

15 SS 1 — VCC/2 Spectral skewing ampinput

50

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 10 of 57

Pin Description (VCC = 14 V, Ta = 25°C, No signal, the value in the table show typicalvalue) (cont)

Pin No. Terminal DC


17 CCR — VCC/2 Current controled

48 resistor output

11 IA OUT — VCC/2 Input amp output

54 V

GND

CC

13 VREF Reference voltage

52 buffer output

14 PB OUT Play back (Decode)

51 output

16 SS 2 Spectral skewing

49 amp. output

20 REC OUT Recording (Encode)

45 output

26 EQ OUT Equalyzer output

39

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 11 of 57


Pin No. Terminal DC


18 HLS DET — 2.3 V Time constant pin for

47 rectifier

19 LLS DET

46

57 BIAS — 0.28 V

GND

Dolby NR Referencecurrent input

25 IREF — 1.2 V EQ Reference currentinput

27 FM EQ Parameter current

28 fQ input

29 f/Q

30 GH

31 GL

32 GP

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 12 of 57


Pin No. Terminal DC


33 HM — —

GND

EQ Parameterselector

34 HC

35 HN

36 NM

37 NC

38 NN

6 CNT 5.2 kΩ VCC/2- DAC output Volume

59 1.5 V toVCC/2

V / 2

DACout

CC control input

22 LMD — 0.2 V Time constant Pin for

43

LM OUT

GND

LMD

level meter

23 LM OUT — 0.2 V Level meter output

42

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 13 of 57


Pin No. Terminal DC


1 NRON/OFF

100 kΩ —

D - GND

GND

Mode control input

2 C/B

3 MPXON/OFF

62 STB

63 CLK

64 DATA

10 INJ — 0.7 V — Injection current inputfor I2L

55 D-GND — 0.0 V — Digital (Logic) ground

40 GND — 0.0 V — Ground

61

Application Note

Power Supply Range

HA12155NT/HA12157NT are designed to operate on either single supply or split supply.

The operating range of the supply voltage is shown in table 1.

Table 1 Supply Voltage

Type No. Single supply Split supply

HA12155NT 9.5 V to 16 V ±6 V to 8 V

HA12157NT 12 V to 16 V ±6 V to 8 V

The lower limit of supply voltage depends on the line output reference level.

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 14 of 57

The minimum value of the headroom margin is specified as 12 dB by Dolby Laboratories. HA12155 seriesare provided with two line output level, which will permit an optimum headroom margin for power supplyconditions.

Reference Voltage

For the single supply operation these devices provide the reference voltage of half the supply voltage that isthe signal grounds. As the peculiarity of these devices, the capacitor for the ripple filter is very small about1/100 compared with their usual value. The Reference voltage are provided for the left channel and theright channel separately. The block diagram is shown as figure 1.

L channel reference

R channel reference

V

8

52

13

+

–

–

++

1 F

CC

µ

Figure 1 The Block Diagram of Reference Voltage Supply

Operating Mode Control

HA12155NT/HA12157NT provides fully electronic switching circuits. NR-ON/OFF, C/B, and MPXON/OFF switches are controlled by parallel data (DC voltage) and other switches are controlled by serialdata.

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 15 of 57

Table 2 Threshold Voltage (VTH)

Pin No. Lo Hi Unit

1, 2, 3 –0.2 to 1.0 3.5 to 5.3 V

62, 63, 64 –0.2 to 1.0 3.5 to 5.3 V

Notes: 1. Voltages shown above are determined by internal circuits of LSI when take pin 55 (DGND pin) asreference pin. On split supply use, same VTH can be offered by connecting DGND pin to GNDpin.This means that it can be controlled directly by micro processor.

2. Each pins are on pulled down with 100 kΩ internal resistor.

Therefore, it will be low-level when each pins ar open.3. Note on serial data inputting

(a) The clock frequency on CLK must be less than 500 kHz.

(b) Over shoot level and under shoot level of input signal must be the value shown below.(c) The serial input pins (pins 62, 63, and 64) are extremely sensitive to undershoot, overshoot,

ringing, and noise. This can result in malfunctions due to problems with the wiring pattern.We recommend attaching capacitors in parallel with the serial input pins to ameliorate thisproblem.Figure 2-b shows an example of this circuit appropriate when the clock frequency is 500kHz. The value of the capacitor should be set in accordance with the clock frequencyactually used.

4. NR Mode SwitchingIn actual use, pop noises may accompany NR on/off switching in C mode. To avoid thesenoises, use the following sequences to turn NR on and off.From C mode NR off to C mode NR on:

(C mode, NR off) → (B mode, NR off) → (B mode, NR on) → (C mode, NR on).From C mode NR on to C mode NR off:(C mode, NR on) → (B mode, NR on) → (B mode, NR off) → (C mode, NR off).

Table 3 Switching Truth Table

Pin No. Lo Hi

1 NR-OFF NR-ON

2 B-NR C-NR

3 MPX-ON MPX-OFF

Notes: 1. Low level will be offered when each pins are open.2. Please refer to next term as for the serial data for formatting.

When connecting microcomputer or Logic-IC with HA12155NT/HA12157NT directly, there isapprehension of rash-current under some transition timming of raising voltage or falling voltage at VCC

ON/OFF.

For this countermeasure, connect 10 kΩ to 20 kΩ resistor with each pins. It is shown in test circuit.

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 16 of 57

within –0.2 V

under 5.3 V

0

Figure 2 Input Level

Serial Data Formatting

8 bit shift register is employed. CLK and DATA are stored during STB being high and data is ratchedwhen STB goes high to low. The clock frequency on CLK must be less than 500 kHz.

0 1 2 3 4 5 6 7

latch of data

5 V0 V5 V0 V5 V0 V

CLK

DATA

STB

Figure 3 Serial Data Timming Chart

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 17 of 57

Table 4 Serial Data Formatting

BitNo.

Controlregister

Volume register

0 TAPE H DAC0

SELECT 1 L TS1TS2

H

H L

L

TAPE IV

TAPE II

TAPE I

TAPE I

bit No.

5 4 3 2 1 0

L L L L L L

L L L L L H

L L L L H L

L L L L H H

H H H H L H

H H H H H L

H H H H H H

increase

gain

decrese

mute

1 TAPE H DAC1 *mute is implemented when all

SELECT 2 L bits are high.

2 TAPE H High (double) speed selection DAC2

SPEED L Normal speed selection

3 METER H Meter sensitivity 20 dB up DAC3

SENSITIVITY L Meter sensitivity normal

4 INPUT H DAC4

SELECT 1 L IS1IS2

H

H L

L

PB I

RP I

VR I

VR I

5 INPUT H DAC 5

SELECT 2 L

6 REC/PB H PB mode selection R/L SELECT H Rch register selection

L REC mode selection L Lch register selection

7 REGISTERSELECT

H Control register selection REGISTERSELECT

L Volume register selection

Note: TAPE I: Normal tape, TAPE II: Chrome tape, TAPE IV: Metal tape

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 18 of 57

Input Block Diagram and Level Diagram

–3 dB

IAOUT

NRlN

MPXFilter

RPI PBI

PB - OUT

NRcircuit

MPX ON

MPX OFF– 3 dB

InputAmpElect-

ricalVR

MAVRI

43 mVrms(–25.2 dBs)




HA12157 775 mVrms (0 dBs)

HA12155 580 mVrms (–2.5 dBs)


VRI

RPI PBI

IAOUT

MPXFilter

NRlN

PB - OUTHA12155 580 mVrms (–2.5 dBs)

HA12157 775 mVrms (0 dBs)

NRcircuit

MAInputAmp




Elect-ricalVR

33 mVrms(–27.4 dBs) NR circuit

The each level shown above is typical value whenoffering Dolby level to test point pin (NR IN) withthe gain of electrical volume is under the conditionof max.

The each level shown above is typical value whenoffering Dolby level to test point pin (IA OUT) withthe gain of electrical volume is under the conditionof max.

b) REC mode

a) PB mode

Figure 4 Input Block Diagram

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 19 of 57

MPX ON/OFF Switch

MPX-OFF mode means that signal from input amp doesn’t go through the MPX filter, but signal goesthrough the SS circuit after being attenuated 3 dB by internal resistor. Refer to figure 5. For not cause anylevel difference between MPX-ON mode and MPX-OFF mode, it is requested to use MPX-filter which hasdefinitely 3 dB attenuated. MPX-OFF mode offer totally flat frequency response and no bias-trap effect.And when applying other usage except figure 5, take consideration to give bias voltage to NR-IN terminalby resistor or so on because internal of NR-IN terminal hsa no bias resistor.

5.6 kMPX

2.4 k

Vref

INPUT amp MPX ON

MPX OFF

NRPROCESSER

Vref

3 dB ATT.

IA OUT NR IN VREF

+

–

+

–

Ω

Ω

Figure 5 MPX ON/OFF Switch Block Diagram

Application as for the Dubbing Cassette Deck

HA12155NT/HA12157NT series has unprocessor signal from recording out terminals during plyabackmode. So, it is simply applied for dubbing cassette decks.

And HA12155NT/HA12157NT has three input terminal. So, it is applicable to switch the signal from PB-EQ as shown below.

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 20 of 57

A deck

PB EQ PB EQB deck

Compensationof low

frequencyregion

REC OUTPBIRPI

EQ IN

EQ OUT

VRIREC IN

PB OUT

REC PB

HA12155 / 7

Figure 6 Application for Dubbing Deck

Injector Current

HA12155NT/HA12157NT has logic circuit which is fabricated by I2L into IC. To operate this circuit, it isrequired enough injector current. Injector current goes into from the INJ pin (pin 10) and external resistoris required to connect to this pin for adequate current. The value of external resistor is obtained by usingfollowing equations. And put them with ±10% tolerance value which is calculated. VINJ can allow toconnect to VCC shown below. Under the condition of high temperature, the mis-operation of logic is causedby large injector current. Also, under the condition of low temperature, the stop of logic is caused by smallinjector current. Therefore, pay attention to have good stability of VINJ.

R INJ =VINJ – 0.7

3.6[kΩ] ---- Single supply

R INJ =VINJ +VEE – 0.7

3.6[kΩ] ---- Split supply

R

3.6 mA

V

HA12155 / 710

40 61

a) Single supply use b) Split supply use

40 61

10

3.6 mAHA12155 / 7

INJ

INJV INJ

R INJ

V EE

Figure 7 Injector Current Application

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 21 of 57

Gain Control of Electronic Volume

HA12155NT/HA12157NT is designed in order to change the gain by 6 bit DAC fabricated into IC. Toreduce the click noise when changing volume gain instantaneously, required to connect the capacitor (CRtime constant) to CNT pin (pin 6,59). These terminals are also be used as output pin of DAC. Therefore,by forcing voltage or current to these terminals, it is applicable to control volume gain directly. But,voltage forced to these terminals must be from VCC/2 –2 V to VCC/2 (for split supply use, –2 V to 0 V) in thiscase. In case of forcing the current these pins, voltage must be the value mentioned above even it is ±20%distributed of internal resistor (5.2 kΩ) of CNT pin. And, these case, change of a gain depending on atemperature gets large.

The Tolerances of External Components for Dolby NR-Block

For adequate Dolby NR tracking response, take external components shown below.

For smooth capacitors of C13, C14, C25 and C26, please employ a few object of the leak, though you canbe useful for an electrolytic capacitor.

C250.1 10%

C260.1 10%

C272200 p 5%

R23560 2%

C292200 p 5%

C282200 p 5%

R24

22 k 2%

R2918 k 2%

57 51 50 49 48 47 46

14 15 16 17 18 19

BIAS PB OUT (L)

SS1(L)

SS2(L)

CCR(L)

HLSDET(L)

LLSDET(L)

PB OUT(R)

SS1(R)

SS2(R)

CCR(R)

HLSDET(R)

LLSDET(R)

R11

22 k 2%

C92200 p 5%

C102200 p 5%

R13560 2%

C122200 p 5%

C130.1 10%

C140.1 10%

Unit R : C : F

± ±

±±

±± ± ±

±±±±

±±

±

µµ

µµ

Ω

HA12155/7 (REC 1 Chip)

Figure 8 Tolerances of External Components

Level Meter

The coupling capacitor of LMIN pin (21 pin and 44 pin).

For these capacitors please employ a small object of the leak.

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 22 of 57

The Application of Equalizer Frequency Response

EQ IN

R1

R2

R3

OP1Gm1

OP2Gm2

F / Q

OP5R6

R7

R10

EQ OUT

R9

R8GH

GLFM

R4R5

Gm4

OP6Gm3

OP3Gm5

OP7

Gm6

OP4

C3

GP

C1

C2

+

_

+

_

+

_+

_

+

_

+

_

+

_

+

_

_

+

_

+

_

+

_

+

_

+

Figure 9 REC Equalizer Block Diagram

Transfer Function:

VoutVin

=R 2 + R3

R2Gm5

R8 ⋅R10

R9

1+ C3Gm4

Gm6Gm5

S

1+C3

Gm4S

+ Gm1R4 ⋅R10

R6 + R7

C2Gm3

S

1+R4

R5

R7R6 + R7

C2Gm3

S +R4

R5

C1Gm 2

C2Gm3

S2

= 4.16R REF

RGL

1+ 6.67 ×10−10 R FM ⋅RGH

RGL⋅S

1+ 6.67× 10−10 RFM ⋅S+ RGP

3.0× 10−10 ⋅RFQ ⋅S1+ 4.5 ×10−11 ⋅RFQ ⋅S + 2.5× 10−20 ⋅R FQ ⋅ RF/ QS2

*RREF-----25 pin bias resistance

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 23 of 57

Gain

3dBBW

f1 f2 f3 f

g1

g2

g3

Figure 10 REC Equalizer Frequency Response

gl =4.16

R REF6.67 ×R GP + RGH( )

g2 = 4.16× RGL

R REF

g3 =4.16× RGH

RREF

f1 = 1

2π ×6.67 ×10−10 ×R FM

f 2 =RGL

2π ×6.67 ×10−10 ×R FM × RGH

f3 =1

2π⋅

0.3

2.25 ×10−21 ×R FQ ×R F / Q

BW = 1

4π ×2.78×10−10 ×R F / Q

Q =f3

BW=3.51×

R F / Q

R F / Q

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 24 of 57

35

30

258 10 12 14 16 18

Qui

esce

nt c

urre

nt I

(m

A)

Supply voltage Vcc (V)

PB : PBI in (DAC Step 0) LM : Normal

REC : VRI in (DAC Step 0) LM : Normal

Quiescent Current vs. Supply Voltage

Q

REC – CREC – BREC – OFFPB – CPB – BPB – OFF

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 25 of 57

12

10

8

6

4

2

0100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

NR–B RPI in RECOUT out

Enc

ode

Boo

st (

dB)

9 V

16 V14 V

: Vin = – 0 dB: Vin = – 10 dB: Vin = – 20 dB: Vin = – 30 dB: Vin = – 40 dB

Encode Boost vs. Frequency (HA12155)

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 26 of 57

16 V

14 V

9 V

25

20

15

10

5

0

–5

–10100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

Enc

ode

Boo

st (

dB)

NR-C RPI in RECOUT out

: Vin = 0 dB: Vin = – 20 dB: Vin = – 30 dB: Vin = – 40 dB: Vin = – 60 dB


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 27 of 57

: Vin = 0 dB: Vin = – 10 dB: Vin = – 20 dB: Vin = – 30 dB: Vin = – 40 dB

12

10

8

6

4

2

0100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

Enc

ode

Boo

st (

dB)

16 V

14 V

11 V


NR-B RPI in RECOUT out

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 28 of 57

Encode Boost vs. Frequency (HA12157)25

20

15

10

5

0

– 5

– 10100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k

Frequency (Hz)

Enc

ode

Boo

st (

dB) 14 V

16 V

11 V

: Vin = – 0 dB: Vin = – 20 dB: Vin = – 30 dB: Vin = – 40 dB: Vin = – 60 dB

NR-C RPI in RECOUT out

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 29 of 57

PB OUT

REC OUT

26

22

18

14

10

610 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Frequency (Hz)

Out

put g

ain

Gv

(dB

)

(NR – OFF, RPI) Vcc = 14 VREC mode

Output Gain vs. Frequency (HA12155)

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 30 of 57

PB OUT

REC OUT

28

24

20

16

12

810 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Frequency (Hz)

Out

put g

ain

Gv

(dB

)

PB mode (NR – OFF, RPI) Vcc = 14 V


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 31 of 57

PB OUT

REC OUT

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

Frequency (Hz)

28

24

20

16

12

8

Out

put g

ain

Gv

(dB

)

(NR – OFF, RPI) Vcc = 14 VREC mode


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 32 of 57

PB OUT

REC OUT

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k

30

26

22

18

14

10

Frequency (Hz)

Out

put

gai

n G

v (d

B)


PB mode (NR – OFF, PBI) Vcc = 14 V

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 33 of 57

NR-C

NR-B

NR-OFF

–15 –10 –5 0 5 10 150.01

0.03

0.1

0.3

1.0

3.0

10

Output level Vout (dB)

Tot

al h

arm

onic

dis

tort

in T

.H.D

. (%

) CC

RPI in RECOUT out REC mode f = 100 Hz V = 14 V 0 dB = 300 mVrms

Total Harmonic Distortion vs. Output Level (HA12155)

NR-C

NR-B

NR-OFF

–15 –10 –5 0 5 10 150.01

0.03

0.1

0.3

1.0

3.0

10


Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%) CC

RPI in RECOUT out REC mode f = 1 kHz V = 14 V 0 dB = 300 mVrms


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 34 of 57

NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


–10 –5 0 5 10 15


RPI in RECOUT out REC mode f = 10 kHz V = 14 V0 dB = 300 mVrms

CC

NR-C

NR-B

NR-OFF

–15 –10 –5 0 5 10 150.01

0.03

0.1

0.3

1.0

3.0

10


Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%) CC

PBI in PBOUT out PB mode f = 100 Hz V = 14 V0 dB = 580 mVrms


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 35 of 57

NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


PBI in PBOUT out PB mode f = 1 kHz V = 14 V 0 dB = 580 mVrms

CC

–10 –5 0 5 10 15


NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


PBI in PBOUT out PB mode f = 10 kHz V = 14 V 0 dB = 580 mVrms

CC

–10 –5 0 5 10 15


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 36 of 57

NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


RPI in RECOUT out REC mode f = 100 Hz V = 14 V CC

–10 –5 0 5 10 15


NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


RPI in RECOUT out REC mode f = 1 kHz V = 14 V CC

–10 –5 0 5 10 15


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 37 of 57

NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


RPI in RECOUT out REC mode f = 10 kHz V = 14 V CC

–10 –5 0 5 10 15


NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


RBI in RBOUT out PB mode f = 100 Hz V = 14 V CC

–10 –5 0 5 10 15


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 38 of 57

NR-C

NR-BNR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


PBI in PBOUT out REC mode f = 10 kHz V = 14 V CC

–10 –5 0 5 10 15


NR-C

NR-B

NR-OFF

–150.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)


PBI in PBOUT out PB mode f = 10 kHz V = 14 V CC

–10 –5 0 5 10 15


HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 39 of 57

Max. Output Level vs. Supply Voltage (HA12155)

Supply voltage V (V)CC

Max

. out

put l

evel

Vo

max

(dB

)

T.H.D. = 1%0 dB = 300 mVrms

f = 1 kHz REC mode RPI in RECOUT out

OFFB C

8 9 10 11 12 13 14 15 160

5

10

15

20



Max

. out

put l

evel

Vo

max

(dB

)

T.H.D. = 1%0 dB = 580 mVrms

f = 1 kHz PB mode PBI in PBOUT out

8 9 10 11 12 13 14 15 160

5

10

15

20

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 40 of 57


Max

. out

put l

evel

Vo

max

(dB

)


f = 1 kHz REC mode RPI in RECOUT out

9 10 11 12 13 15 160

10

15

20

5T.H.D. = 1%0 dB = 300 mVrms

BC

OFF


Max

. out

put l

evel

Vo

max

(dB

)


f = 1 kHz PB mode PBI in PBOUT out

10 11 12 13 14 15 160

10

15

20

5T.H.D. = 1%0 dB = 775 mVrms

BC

OFF

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 41 of 57

PB-C

PB-B

REC-OFF RPI

REC-OFF VRI

PB-OFF

REC-B RPI

REC-B VRI

REC-C RPI

REC-C VRI

Signal-to-Noise Ratio vs. Supply Voltage (HA12155)

90

80

70

60

509 10 11 12 13 14 15 16

Supply voltage Vcc (V)

Sig

nal-t

o-no

ise

ratio

S/N

(dB

)

E Vol : DAC Step No.18 Vin = 100 mVrmsCCIR/ARM

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 42 of 57

Signal-to-Noise Ratio vs. Supply Voltage (HA12157)

90

80

70

60

5010 11 12 13 14 15 16

Supply voltage V (V)

Sig

nal-t

o-no

ise

ratio

S/N

(dB

)

VRI : DAC Step No.18 Vin = 100 mVrmsCCIR/ARM

PB-C

PB-B

REC-OFF RPI

REC-OFF VRI

RB-OFF

PB-B RPI

REC-B VRI

REC-C RPI

REC-C VRI

CC

Crosstalk vs. Frequency (R L)

Frequency (Hz)

10 100 1 k 10 k 100 k–120

–100

–80

–60

–40

–20

Cro

ssta

lk (

R

L)

(dB

)

REC mode RPI in RECOUT outVin = +6 dBV = 14 VCC

C

B

OFF

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 43 of 57

Crosstalk vs. Frequency (R L)

Frequency (Hz)

10 100 1 k 10 k 100 k–120

–100

–80

–60

–40

–20

CC

C

B

Cro

ssta

lk (

R

L)

(dB

)

OFF

PB mode RPI in PBOUT outVin = +6 dBV = 14 V

Cro

ssta

lk (

dB)

Crosstalk vs. Frequency

Frequency (Hz)

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k–100

–80

–60

–40

–20

0

V = 14 VCC

RPI PBI

RPI VRI

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 44 of 57

Cro

ssta

lk (

dB)


Frequency (Hz)

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k–100

–80

–60

–40

–20

0

V = 14 VCC

PBI RPI

PBI VRI

Cro

ssta

lk (

dB)


Frequency (Hz)

10 30 60 100 300 600 1 k 3 k 6 k 10 k 30 k 60 k 100 k–100

–80

–60

–40

–20

0

V = 14 VCC

VRI RPI

VRI PBI

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 45 of 57

Ripple Rejection Ratio vs. Frequency (REC mode)

Frequency (Hz)

Rip

ple

reje

ctio

n ra

tio R

.R.R

. (dB

)0

–10

–20

–30

–40

–5010 50 100 500 1 k 5 k 10 k 50 k 100 k

V = 14 V RECOUT outCC

C

B

OFF

Ripple Rejection Ratio vs. Frequency (PB mode)

Frequency (Hz)

Rip

ple

reje

ctio

n ra

tio R

.R.R

. (dB

)

–10

–20

–30

–40

–50

–6010 50 100 500 1 k 5 k 10 k 50 k 100 k

V = 14 V PBOUT outCC

B

C

OFF

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 46 of 57

Gain, S/N and Vomax vs. DAC Step20

10

0

–10

–20

0 20 30 4010

60

70

80

90

100

DAC Step No.

V = 14 V f = 1 kHzVRI in IAOUT out

CC

IAO

UT

gai

n G

v (d

B)

S/N

(dB

)

Vo

max

(dB

) 0

dB =

–5.

2 dB

s T

.H.D

. = 1

%

Inpu

t lev

el V

in (

the

valu

e to

be

conv

erte

d) (

dBs)

20

16

12

8

4

0

2

–25

–15

–5

5

15

–20

–10

0

10

S/N

Vo max

Gv.Vin

(JIS A filter)

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 47 of 57

Total Harmonic Distortion vs. DAC Step

DAC Step

0 10 20 30 40 500.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)

0 dB = –5.2 dBsVcc = 14 Vf = 100 HzIAOUT output level = const

+10 dB0 dB

–10 dB


DAC Step

0 10 20 30 40 500.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)

0 dB = –5.2 dBsVcc = 14 Vf = 1 kHzIAOUT output level = const

+ 10 dB 0 dB– 10 dB

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 48 of 57


DAC Step

0 10 20 30 40 500.01

0.03

0.1

0.3

1.0

3.0

10

Tot

al h

arm

onic

dis

tort

ion

T.H

.D. (

%)

0 dB = –5.2 dBsVcc = 14 Vf = 10 kHzIAOUT output level = const

+ 10 dB 0 dB– 10 dB

E. Vol Max. Input Level vs. Supply Voltage16

14

12

10

8

6

4

2

08 10 12 14 16 18


E. V

ol M

ax. i

nput

leve

l Vin

max

(IA

OU

T T

.H.D

. = 1

%)

(dB

)

f = 1 kHzIAOUT out DAC Step No.= 42

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 49 of 57

Frequency (Hz)

Electronic Volume Gain vs. Frequency

Ele

ctro

nic

volu

me

gain

(dB

)

10 100 1 k 10 k 100 k–70

–60

–50

–10

–30

–20

0

10

20

30

–40

DAC Step0

DAC Step20

DAC Step29

DAC Step36

DAC Step42

DAC Step47

DAC Step51

DAC Step56

DAC Step62

VRI in IAOUT out V = 14 V V in = –12 dBsCC

Level Meter Output vs. Input Level (HA12155)

Input level Vin (dB)

Leve

l met

er o

utpu

t (V

)

4.0

3.0

2.0

1.0

0–80 –60 –40 –20 0 20 40

0 dB Range

–20 dB Range

0 dB = 580 mVrmsV = 14 V f = 1 kHz

CC

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 50 of 57

Level Meter Output vs. Input Level (HA12157)

Input level Vin (dB)

Leve

l met

er o

utpu

t (V

)

4.0

3.0

2.0

1.0

0–80 –60 –40 –20 0 20 40

0 dB Range

–20 dB Range

0 dB = 775 mVrmsV = 14 V f = 1 kHz

CC

Level Meter Output vs. Frequency

Frequency (Hz)

Leve

l met

er o

utpu

t (V

)

3.2

3.0

2.8

2.6

2.4

2.2

2.020 30 100 300 1 k 3 k 10 k 30 k 100 k

V = 14 VCC

0 dB Range Vin = 0 dB–20 dB Range Vin = –20 dB

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 51 of 57

Level Meter Output vs. Supply Voltage4.0

3.0

2.0

1.0

08 10 12 14 16 18

0 dB Range Vin = 0 dB–20 dB Range Vin = –20 dB


Leve

l met

er o

utpu

t (V

)

f = 1 kHz

0 dB Range Vin = –20 dB

0 dB Range Vin = 12 dB

Equalizer Gain vs. Frequency

Frequency (Hz)

Equ

aliz

er g

ain

(dB

)

40

25

101 k30010 3 k 10 k 30 k 100 k

(5)

(3)

(6)

(4)

(1)(2)

R GPR GLR GHR F/QR FQR FM

(1) (2) (3) (4) (5) (6)NN HN NC HC NM HM33 k33 k33 k51 k51 k

100 k100 k100 k100 k100 k100 k

33 k 33 k 33 k 47 k 47 k33 k 51 k 51 k 51 k 51 k33 k

51 k 20 k 51 k 20 k27 k 51 k 27 k 51 k 27 k

51 k 51 k 51 k 51 k

V = 14 V Vin = –20 dBsCC

20 k

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 52 of 57


Tot

al h

rmon

ic d

isto

rtio

n T

.H.D

. (%

)

Equalizer Total Harmonic Distortion vs. Output Level

–10 –5 0 5 10 15 200.1

0.3

1.0

3.0

10

30

V = 14 V0 dB = –5 dBsRload = 10 k R = 33 kR = 33 kR = 100 kR = 33 kR = 51 kR = 51 k

CC

GLGHFMGPF/QFQ

ΩΩΩ

ΩΩ

Ω

: 15 kHz: 10 kHz: 6.3 kHz: 3.15 kHz: 1 kHz: 315 Hz

Ω

35

30

25

20

15

10

55k 10 k 30 k 100 k 1 M300 k

Equalizer Amplifier Gain (GL) vs. R

R ( )

Equ

aliz

er a

mpl

ifier

gai

n G

L (d

B)

at R = 33 k V out = Ð5 dBs

Ω

GPF/Q

ΩΩ

f = 315 Hzf = 1 kHz

V = 14VR = R = 33 k R = R = 51 k R = 100 k

CCGHFQ

FM

GL

Ω

Ω

GL

GL

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 53 of 57

Equalizer Amplifier Gain (GH) vs. R GH

35

30

25

20

15

10

55k 10 k 30 k 100 k 1 M300 k

R ( )

Equ

aliz

er a

mpl

ifier

gai

n G

H (

dB)

ΩGH

at R = 33 k Vout = Ð5 dBs

GH

CC

GLGPFQFM

F/Q

ΩΩ

ΩΩ

V = 14 VR = 33 kR = 16 kR = R = 24 kR = 390 k

f = 6.3 kHz

Ω

Equalizer Amplifier Gain (GP) vs. R GP

50

45

40

35

30

25

205k 10 k 30 k 100 k 1 M300 k

R ( )

Equ

aliz

er a

mpl

ifier

gai

n G

P (

dB)

ΩGP

CC

GH GPF/QFQ

FM

ΩΩ

Ω

V = 14 VR = R = 33 k R = R = 51 k R = 100 k

f = 19 kHz

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 54 of 57

Equalizer Cut off Frequency (FM) vs. R FM100 k

30 k

10 k

3 k

1 k

3005 k 10 k 30 k 100 k 300 k 1 M

R ( )FM Ω

Equ

aliz

er c

ut o

ff fr

eque

ncy

FM

(H

z)

V = 14 VR = 120 kR = 7.5 kR = R = 24 kR = 16 k

CCGLGH

FQGP

F/Q

ΩΩ

ΩΩ

Equalizer Peak Frequency vs. R FQ300 k

100 k

30 k

10 k

3 k

2 k5 k 10 k 30 k 100 k 300 k 1 M

R ( )FQ Ω

Equ

aliz

er p

eak

freq

uenc

y fo

(H

z)

R =F/Q

Ω

Ω

Ω

Ω

Ω

Ω

12 k

24 k

51 k

100 k

200 k

390 k

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 55 of 57

Equalizer Q vs. R FQ

15

10

5

05 k 10 k 30 k 100 k 300 k 1 M

R ( )FQ Ω

Equ

aliz

er q

ualit

y fa

ctor

Q

R = 390 k 200 k 100 k 51 k 24 k 12 k

ΩΩΩ

ΩΩΩ

F/Q

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 56 of 57

Package Dimensions

Unit: mm

0.25 + 0.11– 0.05

0˚ – 15˚1.78 ± 0.25 0.48 ± 0.10

0.51

Min

2.54

Min

5.08

Max 19.05

57.658.5 Max

1.01

33

32

6417

.0

18.6

Max

1.46 Max

Hitachi CodeJEDEC CodeEIAJ CodeWeight

DP-64S—SC-553-64A8.8 g

HA12155NT/HA12157NT

Rev.4, Jun. 1997, page 57 of 57

Disclaimer

1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,copyright, trademark, or other intellectual property rights for information contained in this document.Hitachi bears no responsibility for problems that may arise with third party’s rights, includingintellectual property rights, in connection with use of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you havereceived the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,contact Hitachi’s sales office before using the product in an application that demands especially highquality and reliability or where its failure or malfunction may directly threaten human life or cause riskof bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularlyfor maximum rating, operating supply voltage range, heat radiation characteristics, installationconditions and other characteristics. Hitachi bears no responsibility for failure or damage when usedbeyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeablefailure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or otherconsequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document withoutwritten approval from Hitachi.

7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductorproducts.

Sales Offices

Hitachi, Ltd.Semiconductor & Integrated Circuits.Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, JapanTel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109

Copyright Hitachi, Ltd., 2000. All rights reserved. Printed in Japan.

Hitachi Asia Ltd. Hitachi Tower 16 Collyer Quay #20-00, Singapore 049318 Tel : <65>-538-6533/538-8577 Fax : <65>-538-6933/538-3877URL : http://www.hitachi.com.sg

URL NorthAmerica : http://semiconductor.hitachi.com/Europe : http://www.hitachi-eu.com/hel/ecgAsia : http://sicapac.hitachi-asia.comJapan : http://www.hitachi.co.jp/Sicd/indx.htm

Hitachi Asia Ltd. (Taipei Branch Office) 4/F, No. 167, Tun Hwa North Road, Hung-Kuo Building, Taipei (105), Taiwan Tel : <886>-(2)-2718-3666 Fax : <886>-(2)-2718-8180 Telex : 23222 HAS-TP URL : http://www.hitachi.com.tw

Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road Tsim Sha Tsui, Kowloon, Hong Kong Tel : <852>-(2)-735-9218 Fax : <852>-(2)-730-0281 URL : http://www.hitachi.com.hk

Hitachi Europe Ltd.Electronic Components Group.Whitebrook ParkLower Cookham RoadMaidenheadBerkshire SL6 8YA, United KingdomTel: <44> (1628) 585000Fax: <44> (1628) 585160

Hitachi Europe GmbHElectronic Components GroupDornacher Straße 3D-85622 Feldkirchen, MunichGermanyTel: <49> (89) 9 9180-0Fax: <49> (89) 9 29 30 00

Hitachi Semiconductor (America) Inc.179 East Tasman Drive,San Jose,CA 95134 Tel: <1> (408) 433-1990Fax: <1>(408) 433-0223

For further information write to:

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