* Z:\tmp\asc_dec_bjh7r6w2\12519457d7e9_4020_QSE_14MHz_with_15MHz_LPF_1_dec1.asc
* Generated by LTspice 26.0.1 for Windows.
XU2 SIG180 N011 N009 0 N011 AD8602 ;pnba In+)In-)V+)V-)OUT
S1 N004 N005 N010 0 MySwitch
C13 N006 0 270p
R2 N018 SIG90 1k
R10 N017 N019 100
C9 N019 0 100n
V6 N016 0 PULSE(-1 1 18n 2n 2n 17n 72n)
XU4 N021 N017 N009 0 N017 AD8602 ;pnba In+)In-)V+)V-)OUT
V7 N022 0 PULSE(-1 1 54n 2n 2n 17n 72n)
C3 SIG90 0 47n
R7 N005 N006 50
C2 SIG180 0 47n
C7 N012 0 100n
* Library below included based on ModelFile attribute of instance XU2, XU4 (C:\users\khalils\AppData\Local\LTspice\lib\sym\OpAmps\AD8602.asy)
.lib AD8602.lib
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2992 1808
WIRE -1584 160 -1584 96
WIRE -1632 176 -1632 128
WIRE -1616 176 -1632 176
WIRE -1504 192 -1504 128
WIRE -1504 192 -1552 192
WIRE -1488 192 -1504 192
WIRE -1392 192 -1408 192
WIRE -1152 192 -1392 192
WIRE -992 192 -1072 192
WIRE -960 192 -992 192
WIRE -800 192 -880 192
WIRE -736 192 -800 192
WIRE -608 192 -656 192
WIRE -1616 208 -1792 208
WIRE -1392 208 -1392 192
WIRE -1584 240 -1584 224
WIRE -800 240 -800 192
WIRE -1392 288 -1392 272
WIRE -1136 288 -1136 240
WIRE -1792 304 -1792 288
WIRE -1648 304 -1648 96
WIRE -1584 304 -1648 304
WIRE -1312 320 -1360 320
WIRE -1088 320 -1088 240
WIRE -1088 320 -1232 320
WIRE -1504 336 -1632 336
WIRE -1584 368 -1584 304
WIRE -800 368 -800 304
WIRE -1632 384 -1632 336
WIRE -1616 384 -1632 384
WIRE -1504 400 -1504 336
WIRE -1504 400 -1552 400
WIRE -1488 400 -1504 400
WIRE -1392 400 -1408 400
WIRE -1152 400 -1392 400
WIRE -992 400 -992 192
WIRE -992 400 -1072 400
WIRE -1792 416 -1872 416
WIRE -1616 416 -1792 416
WIRE -1392 416 -1392 400
WIRE -1792 432 -1792 416
WIRE -1584 448 -1584 432
WIRE -1952 480 -2032 480
WIRE -1872 480 -1872 416
WIRE -1872 480 -1952 480
WIRE -1648 496 -1648 304
WIRE -1584 496 -1648 496
WIRE -1392 496 -1392 480
WIRE -1792 512 -1792 496
WIRE -1312 512 -1360 512
WIRE -1088 512 -1088 448
WIRE -1088 512 -1232 512
WIRE -1504 528 -1632 528
WIRE -1584 560 -1584 496
WIRE -1632 576 -1632 528
WIRE -1616 576 -1632 576
WIRE -1504 592 -1504 528
WIRE -1504 592 -1552 592
WIRE -1488 592 -1504 592
WIRE -1392 592 -1408 592
WIRE -1152 592 -1392 592
WIRE -992 592 -992 400
WIRE -992 592 -1072 592
WIRE -1792 608 -1872 608
WIRE -1616 608 -1792 608
WIRE -1392 608 -1392 592
WIRE -1792 624 -1792 608
WIRE -1584 640 -1584 624
WIRE -2160 656 -2160 624
WIRE -1136 672 -1136 640
WIRE -1648 688 -1648 496
WIRE -1584 688 -1648 688
WIRE -1392 688 -1392 672
WIRE -1792 704 -1792 688
WIRE -1312 704 -1360 704
WIRE -1088 704 -1088 640
WIRE -1088 704 -1232 704
WIRE -1504 720 -1632 720
WIRE -2112 752 -2160 752
WIRE -1952 752 -2032 752
WIRE -1872 752 -1872 608
WIRE -1872 752 -1952 752
WIRE -1584 752 -1584 688
WIRE -1632 768 -1632 720
WIRE -1616 768 -1632 768
WIRE -1504 784 -1504 720
WIRE -1504 784 -1552 784
WIRE -1488 784 -1504 784
WIRE -1392 784 -1408 784
WIRE -1152 784 -1392 784
WIRE -992 784 -1072 784
WIRE -1792 800 -1872 800
WIRE -1616 800 -1792 800
WIRE -1392 800 -1392 784
WIRE -2160 816 -2160 752
WIRE -1792 816 -1792 800
WIRE -1584 832 -1584 816
WIRE -1136 864 -1136 832
WIRE -1392 880 -1392 864
WIRE -1312 896 -1360 896
WIRE -1088 896 -1088 832
WIRE -1088 896 -1232 896
WIRE -2160 928 -2160 896
WIRE -1872 1024 -1872 800
SYMBOL Opamps\\AD8602 -1584 336 R0
SYMATTR InstName U2
SYMBOL sw -1168 192 R270
SYMATTR InstName S1
SYMATTR Value ""
SYMATTR SpiceModel MySwitch
SYMBOL cap -816 240 R0
SYMATTR InstName C13
SYMATTR Value 270p
SYMBOL res -2128 768 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res -1504 800 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R10
SYMATTR Value 100
SYMBOL cap -1408 800 R0
SYMATTR InstName C9
SYMATTR Value 100n
SYMBOL voltage -1216 704 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 32 56 VTop 2
WINDOW 39 32 56 VTop 2
SYMATTR InstName V6
SYMATTR Value PULSE(-1 1 18n 2n 2n 17n 72n)
SYMBOL Opamps\\AD8602 -1584 720 R0
SYMATTR InstName U4
SYMBOL voltage -1216 896 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 32 56 VTop 2
WINDOW 39 32 56 VTop 2
SYMATTR InstName V7
SYMATTR Value PULSE(-1 1 54n 2n 2n 17n 72n)
SYMBOL cap -1808 624 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL res -976 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 50
SYMBOL cap -1808 432 R0
SYMATTR InstName C2
SYMATTR Value 47n
SYMBOL cap -1408 416 R0
SYMATTR InstName C7
SYMATTR Value 100n
FLAG -1136 288 0
FLAG -1360 512 0
FLAG -1360 704 0
FLAG -1360 896 0
FLAG -1136 672 0
FLAG -1136 864 0
FLAG -1360 320 0
FLAG -2160 656 0
FLAG -1952 480 SIG180
FLAG -2160 928 0
FLAG -1952 752 SIG90
FLAG -1792 304 0
FLAG -1792 512 0
FLAG -1792 704 0
FLAG -1584 240 0
FLAG -1584 448 0
FLAG -1584 640 0
FLAG -1584 832 0
FLAG -1392 288 0
FLAG -1392 496 0
FLAG -1392 688 0
FLAG -1392 880 0
FLAG -800 368 0