APV Lectures APV FE Basic Building Blocks How Our Testing Works

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Presentation transcript:

APV Lectures APV FE Basic Building Blocks How Our Testing Works APV BE & Other Assorted Bits of Info Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder Pinholes “Ideal” pinholes are shorts between aluminum strip and p+ implant Resistance on hybrid (22kW,100W)(2.2kW,683W) R(22 kW) Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder LED Pinhole Tests Voltage conversion assumes old resistor values in bias return circuit (22KW,100W) New Leakage Current (mA) Necessary With New Resistor Values Bias Ring Voltage m (Torsten Franke) With new resistor values (2.2KW, 681W): need ~120 mA for regular pinholes need >300 mA for “high current” pinholes Feb 27, 2004 APV Lectures I-Anthony Affolder

On-chip common mode subtraction Inverters share common point Current flows between channels Regular channel noise: s2sraw2-scm2 Opens/saturated channel noise: s2sraw2+scm2 Depending on scm, open channel have higher/lower noise 50 W now Feb 27, 2004 APV Lectures I-Anthony Affolder

Fault Finding Using ARCS (1) Noise Measurement Pulse Height Measurement (Using Calibration Pulse) Opens Noisy Shorts 1 sensor open Pinhole 2 sensor open Pinholes Bad Channel Flags Bad Channel Flags Feb 27, 2004 APV Lectures I-Anthony Affolder

Fault Finding Using ARCS (2) Average Subtracted Peak Time (Calibration Pulse) Pinhole Test (Using LED System) Calibration Injection Response 1 sensor open 2 sensor open Average Subtracted Peak Time (ns) Pinholes LED Intensity Pinhole Channel Bad Channel Flags Feb 27, 2004 APV Lectures I-Anthony Affolder

APV layout Modified wafer test protocol Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder Peaktime Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder Noise vs. Capacitance Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder Feb 27, 2004 APV Lectures I-Anthony Affolder

APV Lectures I-Anthony Affolder Frame Feb 27, 2004 APV Lectures I-Anthony Affolder