bepicolombo/mmo/pwi/sorbet pwi meeting - kanazawa 24/03/2006m.dekkali mmo pwi meeting kanazawa...
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BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
MMO PWI Meeting
Kanazawa University24th March 2006
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
SORBET instrument overview
S ea rch C o il D B
to /fr o m
D P U
+ E x
-E x
+ E y
F P G A
A G C
A G C
P A
P A
P A
1 0 k-4 0k
2 .5 k-1 0 k
1 6 0 k-64 0 k
4 0 k-1 60 k
1 0 k-4 0k
2 .5 k-1 0 k
1 6 0 k-64 0 k
4 0 k-1 60 k
R O M
-E yP A
S O R B E TIn stru m en t
+
-
+
-
C a l
C a l
C a l
Bz
T N R (T h erm a l N o ise R ece iver )
IF F ilter2 1 .4 2 5 M
L O2 1 .2 8 5 M
S y n th2 1 .9 2 5 M3 1 .6 2 5 M
H F R (H ig h F req u en cy R ece iver )D ig ita l
u n it
+
-
A D C
V r ef
V r ef
+
-
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Analogue front end status
Design of a simplified BBM including the main functionalities of the receiver– 2 channels receiver using discrete and ASIC technology on the same PCB board– Technical evaluation of the both options (discrete and integrated)– Functional testing has been done and show the ASIC feasibility– Performances are better using the ASIC– The ASIC will greatly help to minimize the power budget (at least –300mW)
Still to be done– Thermal and radiation evaluation (2Q/2006)– Confirmation (or not) of the ASIC option (3Q/2006)– ASIC in its final configuration – 3rd version (4Q/2006)– BBM including all the functionalities of SORBET (4Q/2006)– Qualification of the last ASIC version (2007)
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
New ASIC design (January 2006)
Analogue functions on a single chip :– Specific for SORBET (Full Custom design)– Thin CMOS technology (AMS 0.35um)– Logarithmic amplifiers (AGC)– Low noise mixers– Selective band-pass filter– Low noise operational amplifier
Functional testing showed :– Measurements and simulations match very well– Improvement of the AGC dynamic range– AGC response less linear but still acceptable– Reduction of the power consumption
Future actions– Thermal testing (soon)– Radiation evaluation (2Q/2006)– Decision to continue the ASIC solution (3Q/2006)
2.6mm
2.6mm
ELISA_0110/14 2.5V
Vref (3.5V)
AOP
In+ In-
IBIAS
Out
Clock driver
Clk_In
p_Clk
n_Clk
Mixer_1
Mixer_2
1
245 10
8
7
6
11121314 17 18
1921 25
2930
31
33
34
36 37 38 39 4042
IBIAS
RF-
RF+
OL+OL-
IF+
IF-
IBIAS
IF+
RF-
RF+
LO+LO-
IF-
AGC_1 Out
In
V CM
V AGC
IBIAS+
IBIAS -
V REF
R FBK
AGC_2Out
In
V CMV AGC
R FBK
IBIAS+
IBIAS -
V REF
4445
46
47
Band-Pass
SC-Filter
IBIAS
In Com
Out
p_Phi
n_Phi
Amp+
-
Amp-
+
M ix_Bias
IF_O
ut1
LO
1+
LO
1 -
RF1+
RF1 -
AG
C_O
ut1
Rfb
k1
Vc1
Vcm
1
AG
C_I
n1
Fil
t_O
ut
Fil
t_B
ias
AO
P_I
n+
AO
P_I
n -
AOP_Out
Fil
t_C
lk
Fil
t_C
om
Fil
t_In
AG
C_B
ias
-
Vcm
2
AG
C_I
n2
Vc2
Rfb
k2
AG
C_B
ias+
RF2+
RF2 -
LO
2+
LO
2 -
AG
C_O
ut2
IF_O
ut2
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Analogue front end test bench
Test bench for analogue purposes :– 2 channels acquisition module– User I/F – BuilderC++ environment– Receiver setup– Stimuli control– GPIB and USB Interfaces– Data acquisition and storage– Graphic display– Manual and automatic tests (scripts)
BBM mixte(ASIC/Discret)
Acquisition
EGSE µ-controller
ATMega-128
ADC_1
ADC_2
USBI/F
Port 24 I/O
USB ASICunder test
Control/Commands
Functiongenerator
Pragamm ableattenuator
GPIB Plot of the receiver response as afunction of the input level or thefrequency
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Radiation testing plan
Preliminary radiation tests for an early evaluation of the ASIC technology
Objectives :– Early detection of possible failures– Evaluation of the technology limits regarding the SEL and the TID– Make a decision about the ASIC option
Latch-up tests :– Tests on 1 ASIC sample powered ON– Heavy ions beam at Louvain (Belgium)– Monitoring of the power supply for latch-up detection
Total dose tests :– 7 ASIC under radiation (5 ON + 2 OFF) + 1 sample for control– CO-60 source up to 100kRad (testing facilities still TBD)– Anneling (ASIC ON @100°C during 160H) and final tests
Applicable documents :– ESA/SCC specification N°25100 (for SEL) and N°22900 (for TID)– Radiation testing plan (TBW)
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Digital Unit : hardware
First BBM design (still under development) :– A6 size daughter board– Re-programmable 2 millions gates FPGA (XILINX)– 128KB low power Honeywell SRAM (+128KB option)– 64KB EEPROM– SpaceWire interfaces (2.5V and 3.3V transceivers) – 2 channels S&H + ADC (AD9225 or HMXADC9225)– Local 1.5V / 2.5V voltage regulator– External 3.3V / 5V / ±12V– Testing connectors : 48 logic analyzer channels, RS232 DSU for LEON
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Digital Unit : FPGA design
Low power processor :– Leon 2 LGPL : control, commands, DSP, data compression
Configuration: 1KB dcache, 1KB icache, MAC16x16, DSU, 32 interrupts controler=> Solution for SEU-free: LEON2FT? LEON3FT?
– Spw-b-2.0 (ESTEC) mapped in IO area: MDP communicationConfiguration: SysClock=3MHz, SlowClock=10MHz, SDR, 32 FCT
– Pseudo random noise : internal calibration
– ADC module : sampling sequences, data buffering
– Analog setup module : receiver configuration
– Synthesizer controller : to be written
FPGA : RTAX-S
ADC(12 b its)
ROM
Synthesized processor (LEON)contro l / com m ands
signal processingdata s tream form at
RAM FIFO
Pseudo-randomnoise generator
(up to 10M H z)SpaceW ire link
Instrum entsetup
O nflightca libration
D PU /SorbetIn terface
C h 1 C h2
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Digital Unit : development tools– FPGA tool chain :
Windows (Actel) and Linux Redhat (Xilinx)– External/Internal logic analyzers :
HP16900/ChipscopePro– Software development tools :
Eclipse + CDT + GRMON evaluation / sparc-elf-gcc / ddd– SpaceWire tools :
USB-brick (2 ports through USB)Java tests application (Dundee)
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Interfaces with PWI
I/F update :– 3cm slot in the MDP chassis– Confirmation of the analogue +5V– DC-DC converters switching frequency– Shield between the PSU and others PWI instruments– Grounding to the MDP chassis– Connection between sensors and instruments
Other :– Energy distribution of the particles at Mercury
+
-+
-+
-
EWO side
SORBETside
M D P c h a ss is g ro u n d
E W O s ig n a l g ro u n d S O R B E T s ig n a l g ro u n d
BepiColombo/MMO/PWI/SORBET
PWI meeting - Kanazawa 24/03/2006 M.Dekkali
Power supply budget (TBC)
Bus Power------------------------------------------+12V 0mW
-12V 100mW
+5V 700mW
-5V 0mW (TBC)
+3.3V 450mW------------------------------------------
Total 1250 mW
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