that 2162 demo board user's guidethatcorp.com/datashts/that_2162-demo_datasheet.pdf ·...

THAT 2162 Demo BoardUser's Guide

Document 600129 Rev 03

Contents

Packing List ......................................................................................................... 2Overview .............................................................................................................. 3Features ............................................................................................................... 3Theory of Operation ............................................................................................ 4Modes and Jumpers ............................................................................................ 6External Control Voltage (CV) .............................................................................. 7Specifications........................................................................................................ 7Appendix A - Schematic ....................................................................................... 8Appendix B - Bill of Materials.............................................................................. 9Appendix C - PCB Layout ................................................................................... 11

THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USATel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com

Copyright © 2015, THAT Corporation

Packing List

(1) THAT2162 DEMO Board PCB Assembly(1) THAT2162Q16-U Chip (in a separate antistatic bag or tube)(1) Documentation Packet

If you are missing any of the above items please contact us [email protected].

Document 600129 Rev 03 of 12 THAT 2162-DEMO User’s Guide



Overview

The THAT2162 DEMO BOARD enables you to take the THAT2162 Dual VCA chipfor a test drive. It implements several typical applications that showcase theutility of a dual VCA - stereo audio level control with better than 1dB gain match-ing, constant power panning (for mono signals) and balance (for stereo signals),and a 2-in/1-out crossfader. You can adjust these parameters using on-boardpots or by applying an external DC control voltage (CV) via banana connectors.Inputs and outputs are available on balanced TRS or XLR connectors via highperformance THAT1243 and THAT1606 OutSmarts™ balanced linereceivers/drivers.

Features

• THAT2162 Dual VCA

• Dual Mono signal path - Chan 1 and Chan 2

• Each channel is input via Neutrik TRS/XLR Combo connectors

• Each channel is output via parallel XLR and TRS connectors

• CV for each VCA can be generated from on-board potentiometer or inputfrom an optional external power supply

• CV for Chan 2 can be independent or slaved to Chan 1

• Pan/Balance circuit generates sin/cos law control voltage for constant poweroperation

• Optional Crossfade of Chan 1 and Chan 2 inputs to Chan 1 output

• Prototype area (100mil spaced plated holes) allows designer to experimentwith custom applications




Theory of Operation

Figure 1 is a block diagram of the THAT2162 DEMO BOARD.Admittedly, Figure 1 is a bit complex, so let's take it one step at a time.

Figure 1a shows the basic stereo signal flow of the circuit. The Chan 1 input goesthrough one half of the THAT2162 VCA, a current-to-voltage buffer, and is outputby the THAT1606 OutSmarts™ balanced line driver. Chan 2 can take a similarpath to the Chan 2 output, or it can optionally carry the Chan 1 input via jumper




+

-

+

-

C ha n 1In p ut

Ch an 2In pu t

E xt . C VIn pu t 1

E xt . C VIn pu t 2

12 4 3 21 6 2-A 1 60 6i t o v

i t o v 1 60 62 1 62 -B

12 4 3

12 4 3

12 4 3Ch 2 In p ut

S e le c t(Jum per H5)

CV S e le c t/S c a le

(Ju mpe rs:H1, H4 )

C ros s fa d eE n ab le

(Jum per H6)

Pa n C irc ui t(Ju mpe rs:

H2, H3 )P a n/ Ba l

P ot

Ch an 2O u tp ut

Ch an 1O u tp ut

+

-

+

-

G a in P o t

Figure 1 -- Block diagram of THAT2162 DEMO BOARD

+

-

+

-

C ha n 1In p ut

Ch an 2In pu t

E xt . C VIn pu t 1

E xt . C VIn pu t 2

12 4 3 21 6 2-A 1 60 6i t o v

i t o v 1 60 62 1 62 -B

12 4 3

12 4 3

12 4 3Ch 2 In p ut



(Ju mpe rs:H1, H4 )

Ch an 2O u tp ut

Ch an 1O u tp ut

+

-

+

-

G a in P o t

Figure 1a -- Block diagram of THAT2162 DEMO BOARD, Basic Gain Control

H5 (this option is necessary for Pan and Crossfade modes, explained later). Theon-board GAIN potentiometer, or the Chan 1 and Chan 2 External CV inputs, canbe used to control the VCAs, selected via jumpers H1 and H4.

In Figure 1b a pan conditioning circuit has been added. Please read THAT Corpo-ration Design Note 120 - VCAs in Pan Potentiometer Application for details onhow this circuit works. In a nutshell, this conditioning circuit creates the properCV to give a "sin/cos" "equal-power" taper. Jumpers H2 and H3 select whether thePan CV is summed with the Gain CV (thereby enabling the Pan function). Ofcourse, for the Pan function to work, a single input signal must be steeredbetween both outputs. Jumper H5 optionally feeds the Chan 1 input to bothhalves of the VCA in MONO input mode to enable the Pan function.

Note that Stereo Balance can be enabled by running the circuit in Figure 1b withseparate "left" and "right" inputs (corresponding to Chan 2 and Chan 1 respec-tively). Thus, jumper H5 must be set for STEREO input mode for Balance towork.




+

-

+

-

C ha n 1In p ut

Ch an 2In pu t

E xt . C VIn pu t 1

E xt . C VIn pu t 2

12 4 3 21 6 2-A 1 60 6i t o v

i t o v 1 60 62 1 62 -B

12 4 3

12 4 3

12 4 3Ch 2 In p ut



(Ju mpe rs:H1, H4 ) Pa n C irc ui t

(Ju mpe rs:H2, H3 )

P a n/ Ba lP ot

Ch an 2O u tp ut

Ch an 1O u tp ut

+

-

+

-

G a in P o t

Figure 1b -- Block diagram of THAT2162 DEMO BOARD, Pan and Balance added

Finally, as shown in Figure 1c, the Crossfade function is added by steering theoutput current from VCA-B to the current-to-voltage converter of VCA-A. Thecurrent outputs of both VCAs sum in this i-to-v converter and are output via theChan 1 Output. Jumper H6 selects whether the current output of VCA-B is sentto the Chan 1 (i.e. crossfade) or Chan 2 output (other modes).

The astute reader will notice that Figure 1c and Figure 1 are the same. Thus, thiscompletes our tour through the THAT2162 DEMO BOARD signal topology.

Modes and Jumpers

Table 1 shows how to set the various jumpers on the PCB for the various operat-ing modes.

XFADEBALANCE (STEREO)ENABLE-Crossfade

STEREOBALANCE (STEREO)ENABLE-Stereo Balance

STEREOPAN (MONO)ENABLE-Pan

STEREO--"EXTERNALCOMMON"

External CV(Chan 1 & 2 slaved)

STEREO--"EXTERNALINDEPENDANT"

External CV(Chan 1 & 2 separate)

STEREO--"INTERNAL"Controlled by on-boardpot

STEREO-DISABLE"0dB"Force 0dB

Gain

H6H5H2 & H3H1 & H4MODE

JUMPERS




+

-

+

-

C ha n 1In p ut

C h an 2In pu t

E xt . C VIn pu t 1

E xt . C VIn pu t 2

12 4 3 21 6 2-A 1 60 6i t o v

i t o v 1 60 62 1 62 -B

12 4 3

12 4 3

12 4 3C h 2 In p ut


C V S e le c t/S c a le

(Ju mpe rs:H1, H4 )

C ros s fa d eE n ab le

(Jum per H6)

Pa n C irc ui t(Ju mpe rs:

H2, H3 )P a n/ Ba l

P ot

C h an 2O u tp ut

C h an 1O u tp ut

+

-

+

-

G a in P o t

Figure 1c -- Block diagram of THAT2162 DEMO BOARD, Crossfade added

Table 1 -- Modes and Jumpers (Note - a dash means “don’t care”)

External Control Voltage (CV)

The Chan 1 and Chan 2 External CV Inputs are provided on banana connectorscompatible with most DC bench supplies. Each CV is input via THAT1243balanced line receivers and scaled as follows:

Since the THAT1243 Balanced Line Receivers on each CV input are fully differen-tial with no ground reference, they can accept DC inputs in either polarity. Thus,if the polarity of the CV input is flipped (such that red = GND and BLACK =CV+) the circuit can be operated with positive-only control voltages (e.g. 0 to-50dB attenuation using a 5V DAC).

Specifications




Parameter Conditions Min Typ Max Units

Gain Range Internal Control -70 — +40 dB

External Control -70 — +20 dB

Control Voltage Range Differential, CV+ - CV- -13 — +13 mV/dB

Control Voltage Constant External Control 88 100 112 mV/dB

THD+N 22Hz - 22kHz, unweighted — 0.2 — %

Dynamic Range re +24 dBu — 114 — dB

Input Overload VCC = –VEE = 15 V — 24 — dBu

Dimensions 5 x 7 x1.5 in

Electrical Characteristics

Parameter Symbol Conditions Min Typ Max Units

Positive Supply Voltage Vcc +12 +15 +18 V

Negative Supply Voltage Vee -12 -15 -18 V

Supply Current (each supply) Icc, Iee Vcc = Vee = 15V — 80 — mA

Typical Power Supply Requirements

-70 dB-7 VDC

0 dB0 VDC

+20 dB+2 VDC

GainCV Input Voltage

Appendix A




Inpu

tTH

AT2

162

DE

MO

Boa

rd S

chem

atic

Cop

yrig

ht ©

200

9, T

HA

T C

orpo

ratio

n. A

ll rig

hts

rese

rved

.

Gai

n

Pan

Out

put Pow

er

Mou

ntin

g/E

MI

11 3

2C

W

11

22

33

G4T

5

S6

R7

72

6 4

3 85

12

EC

-SY

MV

cc

Vee

GN

D

OU

TINE

C+

6 57

8 4

RE

F1

IN-

2IN

+3

V-

4

SN

S5

OU

T6

V+

7

1 3

2C

W

+

+

21 3G

1

12

34

56

78

VO

-3

VO

+14

CA

P1

4

CA

P2

13

V-

11V

+12

GN

D5

IN+

7

IN-

6

++++

R2

S1

T3

G 6

TN4

RN

5

1015

11 13

14 8512

EC

+

EC

-SY

MV

cc Vee

GN

D

OU

TIN

6 57

8 4

RE

F1

IN-

2IN

+3

V-

4

SN

S5

OU

T6

V+

7

1

RE

F1

IN-

2IN

+3

V-

4

SN

S5

OU

T6

V+

7

1

RE

F1

IN-

2IN

+3

V-

4

SN

S5

OU

T6

V+

7

2 31

8 4

2 31

8 4

12

3

6 57

8 4

1

2

+–3

18

4

6 57

8 4

312

CW

1

12

34

56

78

31

2

CW

21 3G

12

3

1

2

3

+

1

12

3

R2

S1

T3

G 6

TN4

RN

5

2 31

8 4

+

+

+

VO

-3

VO

+14

CA

P1

4

CA

P2

13

V-

11V

+12

GN

D5

IN+

7

IN-

6

11

22

33

G4T

5

S6

R7

+–

+–

+–

+–

+–

+–

+–

C7

33p

J6

5WBP

C49

100nR23

10k

J1 NC

J6FI

-H

C42

100n

R30

133k

U2A

THAT

2162

D4

4148

C14

100n

R40

316

C28

100n

NE5

532

U6B

MTG

4

C51

OPE

N

U1

THAT

1243

R24

10k

R42

4.87

k

R19

249k

C19

100n

C32

10uC

410

0n

J2N

C3M

AH

C17

100n

MTG

3

C22

100n

MTG

1

C1

100n

R13

20.0

k

J14

5WBP

H1

CO

N8A

R3

249k

R25

20.0

k

JMP3 0

R20

133k

U10

THAT

1606

C36

100n

C25

100uC21

100u

R39

1.00

M

C31

100n

R32

249k

R7

6.81

k

C23

100n

J10

NR

J6H

F-1

C52

OPE

N

U2B

THAT

2162

NE5

532

U8B

R8

1.00

M

C41

100n

C46 2.2n

U9

THAT

1243

C43

100p

R26

9.09

k

C45

100n

J5

5WBP

C47

100n

U5

THAT

1240

J7

5WBP

C37

100n

D3

4148

R14

9.09

k

C34

100n

TA1

12X2

4 Te

st A

rea

R33

4.02

k

R29

909k

C10

100n

C24

100n

C20 1n

R28

4.02

k

U12 TH

AT12

40

R35

20.0

k

C53

OPE

NC

3510

u

C3

100n

R12

249k

C33

100n

NE5

532

U4A

JMP2 0

R4

20.0

k

NE5

532

U6A

H6

CO

N3

D1

4148

C27

100n

NE5

532

U11

B

R10 316

D5

1N40

03

R36

14.0

k

C18

100n

C44

100n

J12

5WBP

C16

100n

R17

5.11

k

R1

133k

R21

10.0

k

C11

100n

JMP1 0

C12

100p

NE5

532

U8A

NE5

532

U4B

R2

50k

JMP4 0

D2

1N40

03D

6

4148

C15

2.2n

J11

5WBP

H4

CO

N8A

R31

50k

J9N

C3M

AH

R37

6.81

k

H5

CO

N3

H3

CO

N3

R45

OPE

N

C8

10u

J13

5WBP

C54

OPE

N

R11

51R

1

MTG

2

C26

100n

C5

10u

R18

90.9

k

C38 33

p

C13

100n

H2

CO

N3

R5

14.0

K

J4N

RJ6

HF-

1

C48

100n

C39

100n

NE5

532

U11

A

R9

4.87

k

R41

51R

1

R27

249k

C2

10u

C6

10uF

U3

THAT

1606

J8 NC

J6FI

-H

AGD

AGD

AGD

VMHVP

H

AGD

CH

AS

AGD

AGD

VMH

VPH

AGD

AGD

AGD

AGDVP

H

VMH

VPH

VMH

-70d

B

+40d

B

VMH

VPH

AGD

VMH

VPH

AGD

AGD

100m

V/dB

RED BL

K

RED BL

K

AGD

AGD

VPH

VMH

VPH

VPH

AGD

AGD

AGD

VPH

AGD

VMH

VMH

VPH

VMH

VMH

VMH

AGD

VPH

VMH

AGD

AGD

VPH

AGD

AGD

AGD

VPH

VMH

AGD

AGD

VPH

VMH

AGD

VPH

VPH

VPH

VMH

VMH

AGD

VPH

AGD

AGD

VMH

AGD

VPH

VMH

AGD

VMH

AGD

AGD

AGD

VPH

VMH

AGD

VPH

AGD

AGD

AGD

VMH

AGD

VPH

VMH

AGD

AGD

AGD

CH

AS

AGD

AGD

AGD

VPH

AGD

CH

AS

VMH

AGD

CH

AS

AGD

AGD

AGD

AGD

VMHVP

H

100m

V/dB

VMH

AGD

VPH

VMH

VPH

VPH

VMH

AGD

AGD AG

D

AGD

VPH

VMH

VPH

VMH

AGD

VPH

VMH

AGD

AGD

AGD

AGD

VPH

AGD AG

D

VMH

AGD

AGD

CH

AS

AGD

AGD

CH

AS1-

2: C

ross

fade

H6

2-3:

Ste

reo

H2/

H3

1-2:

Pan

/Bal

/Fad

e En

able

2-3:

Pan

/Bal

/Fad

e D

isab

le

+24d

Bu

+24d

BuC

H 2

+24d

Bu

1-2:

Pan

(Mon

o In

)2-

3: B

alan

ce (S

tere

o In

)H1/

H4:

Gai

n1-

2: E

xter

nal I

ndep

ende

nt3-

4: E

xter

nal C

omm

on5-

6: In

tern

al7-

8: 0

dB

CV2

100m

V/dB

CH

1+2

4dBu

CV1

100m

V/dB

Pan

Bala

nce

+24d

BuC

H1

CH

2

+24d

Bu

BLK

RED V+

GN

D

V-

GR

NG

ain

Appendix B

RC0805FR-074K02LYageoRES 4.02K OHM 1/8W 1%0805 SMD

4.02kR28, R33223

RC0805FR-07316RLYageoRES 316 OHM 1/8W 1% 0805SMD

316R10, R40222

RC0805FR-0751R1LYageoRES 51.1 OHM 1/8W 1%0805 SMD

51.1R11, R41221

CT-94W-503BC Compo-nents

TRIMMER POT 50K OHMTOP ADJ

50kR2, R31220

3386F-1-103TLFBournsPOT 10K OHM 9MM SQPLASTIC

10KR23, R24219

ZOR-25-B-52 YageoJUMPER ZERO OHM 1/4W0JMP1,JMP2,JMP3,JMP4

418

NRJ6HF-1NeutrikPhone Jacks 3C STEREO3-SPST NC

NRJ6HF-1J4, J10217

NCJ6FI-HNeutrikPhone Jacks XRL COMBOSTEREO

NCJ6FI-HJ1, J8216

NC3MAHNeutrikXLR Panel Mount Connectors3C MALE PCB

NC3MAHJ2, J9215

3760-5PomonaPOST BINDING BANANAINSULATED GRN

5WBPJ7114

3760-0PomonaPOST BINDING BANANAINSULATED BLK

5WBPJ6, J12, J14313

3760-2PomonaPOST BINDING BANANAINSULATED RED

5WBPJ5, J11, J13312

75102-0078Molex/Waldom

CONN HDR DUAL 80POS.100 SRT AU

CON8AH1, H40.2011

22-28-4363Molex/Waldom

CONN HEADER 36POS .100VERT GOLD

CON3H2, H3, H5,H6

0.3310

1N4003-TDiodes IncRECTIFIER GPP 200V 1ADO-41

1N4003D2, D529

MMBD4148-7-FDiodes IncDIODE SWITCH 75V 350MWSOT23

4148D1, D3, D4,D6

48

UWT1E101MCL1GSNichiconCAP 100UF 25V ELECT WTSMD

100uFC21, C2527

UWT1E100MCL1GBNichiconCAP 10UF 25V ELECT WTSMD

10uFC2, C5, C6,C8, C32,C35

66

CC0805KRX7R8BB104YageoCAP .10UF 25V CERAMICX7R 0805

100nFC1, C3, C4,C10, C11,C13, C14,C16, C17,C18, C19,C22, C23,C24, C26,C27, C28,C31, C33,C34, C36,C37, C39,C41, C42,C44, C45,C47, C48,C49

3052.2nFC46

CC0805KRX7R9BB222YageoCAP 2200PF 50V CERAMICX7R 0805

2.2nFC1524

CC0805KRX7R9BB102YageoCAP 1000PF 50V CERAMICX7R 0805

1nFC2013100pFC43

CC0805JRNP09BN101YageoCAP CERAMIC 100PF 50VNP0 0805

100pFC122233pFC38

CC0805JRNP09BN330YageoCAP CERAMIC 33PF 50VNP0 0805

33pFC721MFG PNMFGDescriptionValueRefQtyItem

Bill of Materials




OTS-16(28)-0.635-02ENPLASTESCO

QSOP-16 SocketTHAT2162U2141

2162Q16-UTHAT CorpDual Voltage ControlledAmplifiers

THAT2162U21401606Q16-UTHAT CorpBalanced Line DriversTHAT1606U3, U102391243S08-UTHAT CorpBalanced Line Receiver, -3dBTHAT1243U1, U92381240S08-UTHAT CorpBalanced Line Receiver, 0dBTHAT1240U5, U12237

NE5532DRTIIC OP AMP DUALLOW-NOISE SOIC

NE5532U4, U6, U8,U11

536

RC0805FR-071MLYageoRES 1.00M OHM 1/8W 1%0805 SMD

1.00MR8, R39235

RC0805FR-07909KLYageoRES 909K OHM 1/8W 1%0805 SMD

909kR29134


249kR3, R12,R19, R27,R32

533


133kR1, R20,R30

332


90.9kR18131


20.0kR4, R13,R25, R35

430


14.0KR5, R36229


10.0kR21128


9.09kR14, R26227


6.81kR7, R37226


5.11kR17125


4.87kR9, R42224




Appendix C







Revision History

11Changed the assembly dwg to clarify the location andorientation of pin 1 of the 2162 IC.

March 2015291403

8Made the following schematic correction: Changed connection to R32 from "VMH" to "VPH"

January 2011248102

8Made the following schematic corrections: - Chg'd R27 and R32 to 249 kOhms. - Chg'd connection to R24 from "AGD" to "VMH" - Reversed the pin numbers for jumper H2/H3Pan/Bal/Fade Enable/Disable

July 2010—01

—ReleasedJune 2009—00

PageChangesDateECORevision

that 2162 demo board user's guidethatcorp.com/datashts/that_2162-demo_datasheet.pdf ·...

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