* Z:\home\khalils\Downloads\files\data\raw_asc\05f1b1d4a273_OpAmp_impedance_matching.asc
* Generated by LTspice 26.0.1 for Windows.
XU1 +2.25 N001 +4.5 0 N002 +4.5 ADA4805 ;pnba 100)101)102)103)104)106
V1 +4.5 0 4.5
R1 N001 vin 47
R2 N002 N001 68
R3 P001 N002 4.7k
XU2 N004 N003 +4.5 0 N003 +4.5 ADA4805 ;pnba 100)101)102)103)104)106
R4 N004 +2.25 4k
R5 P002 N003 50
V2 NC_01 0 SINE(2.25 10u 10.7Meg) Rser=50
R6 +4.5 +2.25 1k
R7 +2.25 0 1k
V3 vin 0 2.25 AC .1m Rser=50
R8 P002 0 50
R9 +2.25 P001 4.7k
* Measurement
.meas vout_max max V(vout)
.meas vout_min min V(vout)
.meas vout_vpp param vout_max-vout_min
.meas vin_max max V(vin)
.meas vin_min min V(vin)
.meas vin_vpp param vin_max-vin_min
.meas amp_gain PARAM -vout_vpp/vin_vpp
.ac dec 1000 1k 15Meg
* Library below included based on ModelFile attribute of instance XU1, XU2 (C:\users\khalils\AppData\Local\LTspice\lib\sym\OpAmps\ADA4805.asy)
.lib ADI.lib
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 880 680
WIRE 64 -48 48 -48
WIRE 160 -48 144 -48
WIRE 624 -32 512 -32
WIRE 512 64 512 -32
WIRE 528 64 512 64
WIRE 48 80 48 -48
WIRE 48 80 32 80
WIRE 64 80 48 80
WIRE 624 80 624 -32
WIRE 624 80 592 80
WIRE 160 96 160 -48
WIRE 160 96 128 96
WIRE 464 96 432 96
WIRE 528 96 464 96
WIRE 64 112 48 112
WIRE 576 128 576 112
WIRE 48 144 48 112
WIRE 112 144 112 128
WIRE 544 144 544 112
WIRE 80 160 80 128
WIRE -64 256 -160 256
WIRE -160 288 -160 256
WIRE -32 336 -64 336
WIRE -160 416 -160 368
WIRE -64 416 -160 416
WIRE -160 432 -160 416
FLAG 80 64 +4.5
FLAG 80 160 0
FLAG 112 144 +4.5
FLAG -160 432 0
FLAG -160 256 +4.5
FLAG 544 48 +4.5
FLAG 544 144 0
FLAG 576 128 +4.5
FLAG -272 368 0
FLAG -32 336 +2.25
FLAG 48 144 +2.25
FLAG 464 176 +2.25
FLAG -48 80 vin
FLAG 240 -32 vout
FLAG -288 624 0
FLAG -288 544 vin
FLAG 704 160 0
FLAG 320 96 +2.25
SYMBOL OpAmps\\ADA4805 96 96 R0
WINDOW 3 61 66 Left 2
SYMATTR InstName U1
SYMBOL voltage -160 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 4.5
SYMBOL res 48 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 47
SYMBOL res 160 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 68
SYMBOL res 256 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 4.7k
SYMBOL OpAmps\\ADA4805 560 80 R0
WINDOW 3 61 66 Left 2
SYMATTR InstName U2
SYMBOL res 448 80 R0
SYMATTR InstName R4
SYMATTR Value 4k
SYMBOL res 720 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 50
SYMBOL voltage -272 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 -147 43 Left 2
WINDOW 3 -325 69 Left 2
SYMATTR SpiceLine Rser=50
SYMATTR Value SINE(2.25 10u 10.7Meg)
SYMATTR InstName V2
SYMBOL res -80 240 R0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res -80 320 R0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL voltage -288 528 R0
WINDOW 123 -325 97 Left 2
WINDOW 39 -325 125 Left 2
WINDOW 3 -325 69 Left 2
SYMATTR Value2 AC .1m
SYMATTR SpiceLine Rser=50
SYMATTR Value 2.25
SYMATTR InstName V3
SYMBOL res 688 64 R0
SYMATTR InstName R8
SYMATTR Value 50
SYMBOL res 336 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 4.7k
TEXT -704 -144 Left 4 ;Measurement
TEXT -704 -104 Left 2 !.meas vout_max max V(vout)\n.meas vout_min min V(vout)\n.meas vout_vpp param vout_max-vout_min\n.meas vin_max max V(vin)\n.meas vin_min min V(vin)\n.meas vin_vpp param vin_max-vin_min\n.meas amp_gain PARAM -vout_vpp/vin_vpp
TEXT -704 456 Left 2 !.ac dec 1000 1k 15Meg