v 20220529 2
C 43400 49800 1 0 0 capacitor-1.sym
{
T 43500 50100 5 10 1 1 0 0 1
refdes=C1
T 44000 50100 5 10 1 1 0 0 1
value=10nF 200V
T 43600 49600 5 10 1 1 0 0 1
footprint=C1206
}
C 45700 45100 1 0 0 capacitor-1.sym
{
T 45800 45400 5 10 1 1 0 0 1
refdes=C2
T 46300 45400 5 10 1 1 0 0 1
value=$CF
T 45900 44900 5 10 1 1 0 0 1
footprint=C0603
T 45900 46000 5 10 0 0 0 0 1
symversion=0.1
}
N 53800 51600 53800 53200 4
N 53800 47800 53800 50800 4
C 45700 45900 1 0 0 resistor-1.sym
{
T 45900 46200 5 10 1 1 0 0 1
refdes=R2
T 46300 46200 5 10 1 1 0 0 1
value=$RF
T 45900 45700 5 10 1 1 0 0 1
footprint=C0805
}
N 44300 50000 45300 50000 4
N 45900 50400 45900 51600 4
{
T 45800 50800 5 10 1 1 90 0 1
netname=q1out
}
N 47500 51400 51000 51400 4
{
T 47700 51500 5 10 1 1 0 0 1
netname=q2_out
}
N 51000 45300 51000 51400 4
N 51000 46000 46600 46000 4
N 45700 46000 45200 46000 4
N 45200 45300 45200 50000 4
{
T 45100 49000 5 10 1 1 90 0 1
netname=fet_gate
}
N 46600 45300 51000 45300 4
N 45700 45300 45200 45300 4
C 45200 53200 1 90 0 capacitor-1.sym
{
T 44900 53800 5 10 1 1 90 0 1
refdes=C31
T 45200 53100 5 10 1 1 90 0 1
value=100nF
T 44900 53000 5 10 1 1 90 0 1
footprint=C0603
}
C 44900 52800 1 0 0 gnd-1.sym
N 45000 53100 45000 53200 4
N 45900 54100 45000 54100 4
N 54300 51200 55400 51200 4
C 45300 49600 1 0 0 jfet-1.sym
{
T 45100 50800 5 10 1 1 0 0 1
refdes=Q1
T 45100 50400 5 10 1 1 0 0 1
footprint=SOT23_3
T 45100 50600 5 10 1 1 0 0 1
value=BF862
}
C 46000 51600 1 90 0 resistor-1.sym
{
T 46200 52100 5 10 1 1 90 0 1
refdes=R3
T 46200 51600 5 10 1 1 90 0 1
value=470Ω
T 45700 51800 5 10 1 1 90 0 1
footprint=C0603
}
C 54700 47000 1 90 0 capacitor-1.sym
{
T 54600 47600 5 10 1 1 0 0 1
refdes=C12
T 54700 46900 5 10 1 1 90 0 1
value=100nF
T 54400 46900 5 10 0 1 90 0 1
footprint=C0603
}
C 54900 53300 1 90 0 capacitor-1.sym
{
T 54600 53900 5 10 1 1 90 0 1
refdes=C13
T 54900 53200 5 10 1 1 90 0 1
value=100nF
T 54600 53100 5 10 0 1 90 0 1
footprint=C0603
}
C 54400 46600 1 0 0 gnd-1.sym
N 54500 48100 53800 48100 4
{
T 53900 47900 5 7 1 1 0 0 1
netname=vss_u1
}
N 54700 53100 53800 53100 4
{
T 54200 53200 5 7 1 1 0 0 1
netname=vcc_u1
}
C 54800 54500 1 180 0 gnd-1.sym
N 42100 50000 43400 50000 4
C 42700 53500 1 180 0 gnd-1.sym
C 43400 50300 1 90 0 resistor-1.sym
{
T 43100 50500 5 10 1 1 90 0 1
refdes=R1
T 43100 50900 5 10 1 1 90 0 1
value=15MΩ
T 43600 50500 5 10 1 1 90 0 1
footprint=C0805
}
N 43300 50300 43300 50000 4
N 45900 54100 45900 54500 4
C 42400 53200 1 270 0 capacitor-1.sym
{
T 42800 52900 5 10 1 1 90 0 1
refdes=C51
T 42300 52100 5 10 1 1 90 0 1
value=10nF 200V
T 42500 52100 5 10 1 1 90 0 1
footprint=C1206
}
C 43400 52100 1 90 0 resistor-1.sym
{
T 43100 52300 5 10 1 1 90 0 1
refdes=R51
T 43100 52700 5 10 1 1 90 0 1
value=15MΩ
T 43600 52300 5 10 1 1 90 0 1
footprint=C0805
}
N 43300 51200 43300 52100 4
{
T 42100 51600 5 10 1 1 0 0 1
netname=vbias_filtered
}
N 42100 51800 43300 51800 4
N 43300 53000 43300 53500 4
{
T 43500 53200 5 10 1 1 90 0 1
netname=vbias
}
C 53100 50800 1 0 0 AD8005-1.sym
{
T 53150 51650 5 8 1 1 0 0 1
device=AD8005
T 53900 51600 5 10 1 1 0 0 1
refdes=U1
T 54300 50900 5 10 1 1 0 0 1
footprint=SOT23_5
T 53800 51200 5 10 1 1 0 4 1
model-name=CFA
T 53100 50800 5 10 0 0 0 0 1
value=AD8005
}
C 53900 53200 1 90 0 resistor-1.sym
{
T 54100 53300 5 10 1 1 90 0 1
refdes=R13
T 54100 53800 5 10 1 1 90 0 1
value=75Ω
T 53600 53300 5 10 0 1 90 0 1
footprint=C0603
}
C 53900 46900 1 90 0 resistor-1.sym
{
T 53650 47200 5 10 1 1 90 0 1
refdes=R12
T 54100 47200 5 10 1 1 90 0 1
value=75Ω
T 53700 46800 5 10 0 1 90 0 1
footprint=C0603
}
N 53800 46400 53800 46900 4
N 54500 48100 54500 47900 4
N 54500 46900 54500 47000 4
C 46000 53200 1 90 0 resistor-1.sym
{
T 46200 53700 5 10 1 1 90 0 1
refdes=R31
T 46200 53200 5 10 1 1 90 0 1
value=470Ω
T 45700 53400 5 10 1 1 90 0 1
footprint=C0603
}
C 45200 51800 1 90 0 capacitor-1.sym
{
T 44900 52400 5 10 1 1 90 0 1
refdes=C3
T 45200 51700 5 10 1 1 90 0 1
value=100nF
T 44900 51600 5 10 1 1 90 0 1
footprint=C0603
}
C 44900 51400 1 0 0 gnd-1.sym
N 45000 51700 45000 51800 4
N 45000 52700 45900 52700 4
N 45900 52500 45900 53200 4
{
T 45800 52900 5 10 1 1 180 0 1
netname=vfet_q1
}
C 40800 43800 0 0 0 title-A3.sym
{
T 41000 44000 5 10 1 1 0 0 1
title=Common base stage with current source type Charge Sensitive Amplifier
T 50300 44500 5 10 1 1 0 0 1
Date=$Date: 2025-06-13 15:47:50 +0200 (Fr, 13 Jun 2025) $
T 50300 44200 5 10 1 1 0 0 1
Filename=CSA-Beau-2.sch
T 54400 44200 5 10 1 1 0 0 1
revision=$Revision: 9346 $
T 54400 43900 5 10 1 1 0 0 1
author=$Author: stephan $
T 49900 44900 5 10 1 1 0 0 1
id=$Id: CSA-Beau-sk.sch 9346 2025-06-13 13:47:50Z stephan $
}
C 55400 51100 1 0 0 out-1.sym
{
T 55400 51400 5 10 0 0 0 0 1
device=OUTPUT
T 56100 51200 5 10 1 1 0 0 1
refdes=out
}
C 41500 49900 1 0 0 in-1.sym
{
T 41500 50200 5 10 0 0 0 0 1
device=INPUT
T 41500 50000 5 10 1 1 0 7 1
refdes=in
}
C 53700 54900 1 270 0 in-1.sym
{
T 54000 54900 5 10 0 0 270 0 1
device=INPUT
T 53700 55000 5 10 1 1 0 0 1
refdes=Vcc
}
C 45800 55100 1 270 0 in-1.sym
{
T 46100 55100 5 10 0 0 270 0 1
device=INPUT
T 45700 55200 5 10 1 1 0 0 1
refdes=Vfet
}
C 53900 45800 1 90 0 in-1.sym
{
T 53600 45800 5 10 0 0 90 0 1
device=INPUT
T 53800 45600 5 10 1 1 0 0 1
refdes=Vss
}
C 43200 54100 1 270 0 in-1.sym
{
T 43500 54100 5 10 0 0 270 0 1
device=INPUT
T 43100 54200 5 10 1 1 0 0 1
refdes=Vbias
}
C 42200 48300 1 0 0 gnd-1.sym
C 41500 48600 1 0 0 in-1.sym
{
T 41500 48900 5 10 0 0 0 0 1
device=INPUT
T 41500 48700 5 10 1 1 0 7 1
refdes=GND
}
C 55100 50900 1 270 0 resistor-1.sym
{
T 55500 50400 5 10 1 1 180 4 1
refdes=R22
T 55500 50600 5 10 0 1 0 4 1
value=$R22
T 55500 50000 5 10 0 1 90 0 1
footprint=C0603
}
N 45900 51400 46500 51400 4
N 54700 53100 54700 53300 4
C 47200 49700 1 90 0 capacitor-1.sym
{
T 47100 50300 5 10 1 1 0 0 1
refdes=C7
T 47200 49600 5 10 1 1 90 0 1
value=100nF
T 46900 49500 5 10 1 1 90 0 1
footprint=C0603
}
C 46900 49300 1 0 0 gnd-1.sym
N 47000 50800 47000 50600 4
N 47000 49600 47000 49700 4
C 49000 48800 1 270 0 resistor-1.sym
{
T 48900 48100 5 10 1 1 90 0 1
refdes=R8
T 48900 48400 5 10 1 1 90 0 1
value=33kΩ
T 49400 48100 5 10 1 1 90 0 1
footprint=C0603
}
C 49700 50600 1 270 0 resistor-1.sym
{
T 49600 49800 5 10 1 1 90 0 1
refdes=R7
T 49600 50100 5 10 1 1 90 0 1
value=120kΩ
T 50100 49900 5 10 1 1 90 0 1
footprint=C0603
}
C 49700 52400 1 270 0 resistor-1.sym
{
T 49600 51600 5 10 1 1 90 0 1
refdes=R6
T 49600 52000 5 10 1 1 90 0 1
value=68kΩ
T 50000 52200 5 10 1 1 270 0 1
footprint=C0603
}
N 49800 51500 49800 50600 4
N 47000 50700 49800 50700 4
{
T 48400 50800 5 10 1 1 0 0 1
netname=q2bias
}
N 49800 48900 49800 49700 4
C 48200 48800 1 270 0 resistor-1.sym
{
T 48100 48100 5 10 1 1 90 0 1
refdes=R4
T 48100 48400 5 10 1 1 90 0 1
value=1.5kΩ
T 48500 48600 5 10 1 1 270 0 1
footprint=C0603
}
N 48300 47900 49800 47900 4
{
T 48700 47600 5 10 1 1 0 0 1
netname=vdd_f1
}
N 48900 49500 49800 49500 4
{
T 48800 49600 5 10 1 1 0 0 1
netname=q3bias
}
N 48300 50000 48300 51400 4
C 50000 48000 1 90 0 capacitor-1.sym
{
T 50000 48600 5 10 1 1 90 0 1
refdes=C8
T 50000 48900 5 10 1 1 90 0 1
value=100nF
T 49700 48600 5 10 1 1 90 0 1
footprint=C0603
}
C 48200 46600 1 0 0 gnd-1.sym
N 49800 47700 49800 48000 4
N 55200 50900 55200 51200 4
N 55200 50000 55200 49600 4
C 49100 53000 1 90 0 capacitor-1.sym
{
T 49100 53600 5 10 1 1 90 0 1
refdes=C61
T 49100 52900 5 10 1 1 90 0 1
value=100nF
T 48800 52800 5 10 1 1 90 0 1
footprint=C0603
}
C 49000 54200 1 180 0 gnd-1.sym
N 49800 52600 48900 52600 4
{
T 49000 52400 5 10 1 1 0 0 1
netname=vcc_f1
}
N 48900 52600 48900 53000 4
C 48500 46900 1 90 0 capacitor-1.sym
{
T 48200 47500 5 10 1 1 90 0 1
refdes=C62
T 48500 46800 5 10 1 1 90 0 1
value=100nF
T 48200 46700 5 10 1 1 90 0 1
footprint=C0603
}
C 49700 47700 1 270 0 resistor-1.sym
{
T 49600 46800 5 10 1 1 90 0 1
refdes=R62
T 49600 47300 5 10 1 1 90 0 1
value=75Ω
T 50100 46900 5 10 1 1 90 0 1
footprint=C0603
}
N 42600 51800 42600 52300 4
N 49800 52700 49800 52400 4
C 49700 53600 1 270 0 resistor-1.sym
{
T 49600 52900 5 10 1 1 90 0 1
refdes=R61
T 49600 53400 5 10 1 1 90 0 1
value=1kΩ
T 50000 53400 5 10 1 1 270 0 1
footprint=C0603
}
N 49800 53600 49800 54500 4
N 53800 54300 53800 54100 4
N 49800 46800 49800 46400 4
N 49800 46400 53800 46400 4
N 49800 54500 45900 54500 4
N 42300 48600 42300 48700 4
N 42100 48700 42300 48700 4
C 46500 50800 1 270 1 pnp-sot23.sym
{
T 47000 51700 5 10 0 0 90 2 1
device=PNP_TRANSISTOR
T 46900 51500 5 10 1 1 0 2 1
refdes=Q2
T 46900 51700 5 10 1 1 0 2 1
footprint=SOT23_3
T 46900 51800 5 10 1 1 0 0 1
device=MMBTH81
T 46900 52000 5 10 0 1 0 0 1
value=MMBTH81
}
C 48900 49000 1 0 1 npn-sot23.sym
{
T 48000 49500 5 10 0 0 0 6 1
device=NPN_TRANSISTOR
T 48400 49500 5 10 1 1 0 6 1
refdes=Q3
T 49000 50100 5 10 1 1 0 6 1
footprint=SOT23_3
T 48400 49900 5 10 1 1 0 0 1
device=MMBTH10
T 48400 50300 5 10 0 1 0 0 1
value=MMBTH10
}
C 45800 49100 1 0 0 gnd-1.sym
N 45900 49600 45900 49400 4
N 49100 48800 49100 49500 4
N 48300 48800 48300 49000 4
{
T 48500 48800 5 10 1 1 90 0 1
netname=q3e
}
N 48300 47800 48300 47900 4
C 43900 54500 1 180 0 gnd-1.sym
C 44000 53300 1 90 0 capacitor-1.sym
{
T 43900 53600 5 10 1 1 270 0 1
refdes=C52
T 44100 54200 5 10 1 1 270 0 1
value=10nF 200V
T 43900 54300 5 10 1 1 270 0 1
footprint=C1206
}
N 43800 53300 43300 53300 4
C 41500 47300 1 0 0 in-1.sym
{
T 41500 47600 5 10 0 0 0 0 1
device=INPUT
T 41500 47400 5 10 1 1 0 7 1
refdes=test
}
N 44300 47400 45200 47400 4
C 55100 49600 1 270 0 resistor-1.sym
{
T 55600 49000 5 10 1 1 180 4 1
refdes=R23
T 55600 49200 5 10 0 1 180 4 1
value=$R23
T 55500 48700 5 10 0 1 90 0 1
footprint=C0603
}
C 55100 48400 1 0 0 gnd-1.sym
N 53300 51000 53300 49800 4
{
T 53250 50900 5 7 1 1 90 6 1
netname=u1inv
}
N 53300 49800 55200 49800 4
C 51900 51500 1 180 0 resistor-1.sym
{
T 51400 51200 5 10 1 1 0 4 1
refdes=R20
T 51400 51000 5 10 0 1 0 4 1
value=$R20
T 51000 51100 5 10 0 1 0 0 1
footprint=C0603
}
C 52800 51500 1 180 0 resistor-1.sym
{
T 52400 51200 5 10 1 1 0 4 1
refdes=R21
T 52400 51000 5 10 0 1 0 4 1
value=$R21
T 51900 51100 5 10 0 1 0 0 1
footprint=C0603
}
N 52800 51400 53300 51400 4
{
T 52800 51450 5 7 1 1 0 0 1
netname=u1ninv
}
C 52200 52000 1 0 0 capacitor-1.sym
{
T 52600 52600 5 10 1 1 0 4 1
refdes=C20
T 52600 52800 5 10 0 1 0 4 1
value=$C20
T 52400 51800 5 10 0 1 0 0 1
footprint=C0603
T 52400 52900 5 10 0 0 0 0 1
symversion=0.1
}
N 54900 51200 54900 52200 4
N 54900 52200 53100 52200 4
N 52200 52200 51900 52200 4
N 51900 52200 51900 51400 4
{
T 51850 52100 5 7 1 1 90 6 1
netname=u1sk
}
C 53200 49600 1 90 0 capacitor-1.sym
{
T 52700 50300 5 10 1 1 180 4 1
refdes=C21
T 52700 50500 5 10 0 1 0 4 1
value=$C21
T 53400 49800 5 10 0 1 90 0 1
footprint=C0603
T 52300 49800 5 10 0 0 90 0 1
symversion=0.1
}
C 52900 49300 1 0 0 gnd-1.sym
N 53000 50500 53000 51400 4
T 51200 55000 9 10 1 0 0 2 8
b=0.46, a=1.47 
τ = 1µs / 1.5µs / 2.2µs 
R20 = 22kΩ
R21 = 33kΩ
C20 = 47pF / 68pF/ 100pF
C21 = 33pF / 47pF / 68pF 
R22 = 1kΩ
R23 = 2.2kΩ
T 55400 54900 9 10 1 0 0 2 6
b=0.46, a=1.47 
τ = 2.7µs
R20 = 27kΩ
R21 = 39kΩ
C20 = 100pF
C21 = 68pF 
T 51500 48700 9 10 1 0 0 0 1
b = R22/R23
T 51500 49000 9 10 1 0 0 0 1
a = C20/C21
T 51500 48400 9 10 1 0 0 0 1
a = b+1  →  τ = R20×C20 = R21×C21
N 42100 47400 43400 47400 4
C 43400 47200 1 0 0 capacitor-1.sym
{
T 43500 47500 5 10 1 1 0 0 1
refdes=C11
T 44000 47500 5 10 1 1 0 0 1
value=1pF 5%
T 43600 47000 5 10 1 1 0 0 1
footprint=C0603
T 43600 48100 5 10 0 0 0 0 1
symversion=0.1
}