25 Element Pixel Array - University of California, Santa Barbara

25 Element Pixel Array - University of California, Santa Barbara

25 Pixel Array Status 19 November 2003 Sam Burke Sean Stromberg UCSB HEP Group UCSB ASIC BiWeekly Status Meeting Slide 1 ASIC Progress Tanner EDA Tools Installed L-Edit Pro v 10.20 T-Spice Pro v 9.02 Network Licensing

Permission granted to use AMI Semiconductor 0.35 um CMOS Process (Education Program) Spice Models Set of pdf documents on process Design Rules $590 / mm^2 cost with 20 samples UCSB ASIC BiWeekly Status Meeting Slide 2 ASIC Progress Preliminary Specfications

5x5 Array of 250 um square pixels Signal Processing Charge Amplifier (97 e ENC Noise Goal) Analog Shaping Amplifier (Ts = 500 nS) Descriminator (32 voltage levels) 18 bit Accumulator (130 Mhz shift rate, output ) 3.3 Vdd @ 50 uA per stage

Notes based on 4 Nov telecomference with Einer UCSB ASIC BiWeekly Status Meeting Slide 3 Preferred CMOS Structure? UCSB ASIC BiWeekly Status Meeting Slide 4 Future Plans Create AMI 035 D-Register and Simulate

Inverter Transmission Gate Design For use in 18 bit ripple counter Do layout with L-Edit checking footprint Create 18bit Ripple Counter and Simulate Charge Amplifier Simulation UCSB ASIC BiWeekly Status Meeting Slide 5 CMOS Inverter Vdd = 3.3 vdc Vswitch = 50% Vdd = 1.65 vdc

Wp=3Wn Tphl = 3.4ns (high to low) t=Rn(Cout+0.8pf) L=5um W=8um Tplh = 3.5ns (low to high) t=Rp(Cout+0.8pf) L=5um W=35um Optimize for small size ? Ref: Baker R.J. CMOS Ch 11 UCSB ASIC BiWeekly Status Meeting

Slide 6 Transmission Gate Vdd = 3.3 vdc Vswitch = 50% Vdd ? Ton = ? Toff = ? Ref: Baker R.J. CMOS Ch13 UCSB ASIC BiWeekly Status Meeting Slide 7 D Flip Flop Simple Master / Latch Version

4ea Inverters + 1 Trans Gate Master/ Slave Version? 4ea Inverters + 4 Trans Gates Set and Clear Required? 4ea 2-Nand Gates + 4 Trans Gates UCSB ASIC BiWeekly Status Meeting Slide 8

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