test of e906 preamp prototype da-shung su, su-yin wang, ting-hua chang, wen-chen chang 2010/01/28
TRANSCRIPT
Test of E906 PreAmp Prototype
Da-Shung Su, Su-Yin Wang, Ting-Hua Chang, Wen-Chen Chang2010/01/28
Block Diagramhttp://www-hep.phys.sinica.edu.tw/E906/FrontPage?action=AttachFile&do=get&target=E906_PAD_ENG_Schematics_Rev3.pdf
Stage A
Stage B
Reference Voltage
Cadence® Allegro® PCB
ESD protection Stage A Stage B Comparator DC/DC converter
E906 PAD card PCB layout design, Rev 1.0
Dimension4.
6 cm
10 c
m
1 cm
16 cm
Test of PreAmp Card(one-channel only)
signal input
DC Power supply
ECL output from comparator
Input Signal from Function Generator
Test Platform
Amplified (Small) Signal at Stage A
Input signal
Amplified signal
ECL differentialoutput
Injection charge=2.5A
Gain=30mV/2.5A=12k
Amplified (Small) Signal at Stage A
Input signal
Amplified signal
ECL differentialoutput
Injection charge=2.5A
Gain=30mV/2.5A=12k
Amplified (Small) Signal at Stage B
Input signal
Amplified signal
ECL differentialoutput
Injection charge=2.5A
Gain=200mV/2.5A*2=160k
Amplified (Small) Signal at Stage B
Input signal
Amplified signal
ECL differentialoutput
Injection charge=2.5A
Gain=200mV/2.5A*2=160k
Amplified (Large) Signal at Stage B
Input signal
Amplified signal
ECL differentialoutput
Injection charge=7.5A
Gain=700mV/7.5A*2=180k
•Undershoot is intrinsic in the input signal.•A quick baseline return within 30ns.
Detection Efficiency for Small Signal
Comparator Output
Triggered by 2.4 MHz signal from function generator. Accumulated over 1 minute.
Uniform Performance for Differential ECL Output from Comparator