Phase-1 Design

i PHC Phase /04/2008 System Overview Clock, JTAG, sync marker and power supply connections Digital output only 4 data outputs per chip at 160 MHz 40 LVDS pairs to drive 1 m cable connection Low-mass system 10 chips per ladder Directly bonded on n-layers flex capton LVDS drivers on chip

i PHC Phase /04/2008 Preliminary specifications Process 0.35 µm (AMS c35b4/opto) (3.3 V ± 0.3 V) Matrix of 640 x 640 pixels with 30 µm pitch Raw digital output without zero suppression JTAG control for configuration and testing Internal bias DACs 2 levels of multiplexer:  Low speed (40 MHz for test) and High speed (160 MHz) Bonding pad location at the bottom edge  Analog test pads (~ 100µm x 100µm) on the top edge Area estimation 19.5 mm x 21.0 mm

i PHC Phase /04/2008 Chip floor-plan Ex. F RDO = 160 MHz  Discriminator frequency = 1 MHz  In pixel frequency = 16 MHz  Integration time = 640 µs Integration time = 160 / F RDO x µm µm

i PHC Phase /04/2008 Mimosa22 background Best suitable pixel to be chosen from M22 test Digital control logic  Pixel scan => resized to 640 rows  Pattern generator => OK JTAG interface => markers for synchronizations Output multiplexer with fast/slow outputs  not present in M22 -- NEW DESIGN Improved Testability for digital and analog blocks  2 registers for test patterns at the discriminator level  characterization of pixel matrix Reuse the experience and building blocks of M22

i PHC Phase /04/2008 Critical points and chip testability High speed MHz Synchronization among the chips in the ladder  Internal generation of markers + frame counter  How to recovery if chips are out of sync (adding more pins) LVDS pads drive 1m of flex cable Power consumption  Static: ~ 400 mW  Dynamic: ~60mW (serializ.); 110 mW (6 x LVDS TX); 8 mW (LVDS RX); Testability based on M22:  Digital: + additional synchronization markers  Analog information from groups of 8 columns of pixels

i PHC Phase /04/2008 Phase-1: I/O ~ 50 signals (7 LVDS pads included) Standard CMOS pads for low speed outputs ~ 50 power supply lines Two bonding per I/O to facilitate probe testing Analog outputs (8 pads) on top edge for testing purpose More detailed list later…

i PHC Phase /04/ Discriminators Pixel array 640x640 Shift Register (80 bits) Analog Multiplexer 1  80 (8  640) 8 Analog Outputs In normal mode the shift register is disabled. The first 8 columns are read continuously. In scan mode the shift register is enabled: groups of 8 columns are read after the read of 640 lines. Analog Test for Pixel Matrix

i PHC Phase /04/2008 Serializer Mux 160:1 4 intermediate outputs at low-speed for test Scrambled data at the fast output Latency  25.0 ns for low speed output  6.25 ns for high speed output