anode

1
TPC FEE OVERVIEW
Each of the 36 TPC Sectors is served by 6 Readout
Subsystems
DETECTOR
Front End Card (128 CHANNELS)
drift region 88ms
8 CHIPS (16 CH / CHIP)
8 CHIPS (16 CH / CHIP)
ALTRO
DDL (3200 CH / DDL)
gating grid
Digital Circuit
PASA
RCU
ADC
RAM
anode wire
CUSTOM IC (CMOS 0.35mm)
pad plane
570132 PADS
CUSTOM IC (CMOS 0.25mm )
Overall TPC 4356 Front End Card 216
Readout Partitions
2
PASA - The Final Act
INPUTS
single channel
OUTPUTS
IMPULSE RESPONSE FUNCTION
Parameter Requirement ER Version
Noise lt 1000e 560e (12pF)
Conversion gain 12mV / fC 12mV / fC
Shaping time 190ns 188ns
Non linearity lt 1 0.2
Crosstalk lt0.3 lt 0.1
Power consumption lt 20mW 11mW / ch
Gain dispersion lt1
Q 149 fC
A(t / t)4e-4(t/t)
OUPUTS
3
ALTRO Characterization Mass Production Test
Process HCMOS-7 (0.25 µm)
Area 64 mm2
Dimensions 7.70 8.35 mm2
Transistors 6 milions
Embedded memory 800 kbit
Supply voltage 2.5 V
Power 16mW / channel
Package TQFP-176
ER (12 wafers) Apr 02
Mass prod. (125 wafers) Dec 02
Yield 84
4
Front End Card Ready for Production
Shaping Amplifiers
current monitoring supervision
ALTROs
COOLING PLATES (COPPER)
voltage regulators
power connector
control bus connector
WATER COOLING PIPE
READY FOR PRODUCTION
190 mm
readout bus connectors
GTL transceivers (back side)
INNER READOUT CHAMBER
155 mm
5
FEE Components Assembly
Readout and Control Backplane (300 MB /sec)
25 Front End Cards
Power Connector
PASA
Readout Partition (3200 channels)
ALTRO
6
CERN TPC FEE Team in 2003
Roberto Campagnolo
Claude Engster
Roland Bramm
Antoine Junique
Carmen Gonzalez
Luciano Musa
Bernardo Mota