Version 4 SHEET 1 2168 680 WIRE 336 -720 224 -720 WIRE 752 -720 336 -720 WIRE 912 -720 752 -720 WIRE 336 -656 336 -720 WIRE 912 -656 912 -720 WIRE 752 -592 752 -720 WIRE 672 -544 624 -544 WIRE 208 -512 160 -512 WIRE 416 -512 288 -512 WIRE 672 -512 416 -512 WIRE 912 -512 912 -576 WIRE 912 -512 816 -512 WIRE 976 -512 912 -512 WIRE 416 -496 416 -512 WIRE 672 -480 544 -480 WIRE 848 -480 816 -480 WIRE 672 -448 576 -448 WIRE 848 -448 848 -480 WIRE 848 -448 816 -448 WIRE 160 -432 160 -512 WIRE 912 -400 912 -512 WIRE 416 -384 416 -416 WIRE 544 -384 544 -480 WIRE 544 -384 416 -384 WIRE 416 -352 416 -384 WIRE 160 -208 160 -352 WIRE 416 -208 416 -288 WIRE 416 -208 160 -208 WIRE 624 -208 624 -544 WIRE 624 -208 416 -208 WIRE 752 -208 752 -400 WIRE 752 -208 624 -208 WIRE 848 -208 848 -448 WIRE 848 -208 752 -208 WIRE 912 -208 912 -320 WIRE 912 -208 848 -208 WIRE 752 -176 752 -208 WIRE -464 -128 -1008 -128 WIRE -336 -128 -400 -128 WIRE -144 -128 -256 -128 WIRE -48 -128 -144 -128 WIRE 96 -128 16 -128 WIRE -1008 -32 -1008 -128 WIRE -464 -32 -1008 -32 WIRE -336 -32 -400 -32 WIRE -144 -32 -144 -128 WIRE -144 -32 -256 -32 WIRE -48 -32 -144 -32 WIRE 96 -32 96 -128 WIRE 96 -32 32 -32 WIRE -144 112 -144 -32 WIRE -48 112 -144 112 WIRE 96 128 96 -32 WIRE 96 128 16 128 WIRE 176 128 96 128 WIRE 240 128 176 128 WIRE 336 128 336 -576 WIRE 336 128 320 128 WIRE 576 128 576 -448 WIRE 576 128 336 128 WIRE -592 144 -720 144 WIRE -512 144 -592 144 WIRE -464 144 -512 144 WIRE -48 144 -464 144 WIRE -720 224 -720 144 WIRE -592 224 -592 144 WIRE -720 352 -720 304 WIRE -1008 384 -1008 -32 WIRE -720 384 -720 352 WIRE -464 400 -464 144 WIRE -1008 528 -1008 464 WIRE -720 528 -720 464 WIRE -720 528 -1008 528 WIRE -592 528 -592 304 WIRE -592 528 -720 528 WIRE -464 528 -464 464 WIRE -464 528 -592 528 WIRE -400 528 -464 528 WIRE -400 576 -400 528 FLAG -720 352 5V FLAG -400 576 0 FLAG -16 160 0 FLAG -16 96 5V FLAG -512 144 U/2 FLAG 224 -720 5V FLAG 752 -176 0 FLAG 176 128 L+R FLAG 976 -512 CQUAM SYMBOL voltage -720 368 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL Misc\\EuropeanResistor -736 208 R0 SYMATTR InstName R19 SYMATTR Value 2K2 SYMBOL Misc\\EuropeanResistor -608 208 R0 SYMATTR InstName R20 SYMATTR Value 2K2 SYMBOL cap -480 400 R0 SYMATTR InstName C12 SYMATTR Value 47µ SYMBOL voltage -1008 368 R0 WINDOW 3 12 121 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value SINE(0 0.25 1KHz 0 0 0) SYMATTR InstName V2 SYMBOL Misc\\EuropeanResistor 48 -48 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 100K SYMBOL cap 16 -144 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 22p SYMBOL Opamps\\LTC6240 -16 128 R0 SYMATTR InstName U1 SYMBOL Misc\\EuropeanResistor 304 -528 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R29 SYMATTR Value 10K SYMBOL Misc\\EuropeanResistor 400 -512 R0 SYMATTR InstName R24 SYMATTR Value 220 SYMBOL LM13700n 736 -480 R0 SYMATTR InstName X1 SYMBOL Misc\\EuropeanResistor 896 -416 R0 SYMATTR InstName R25 SYMATTR Value 2.2K SYMBOL Misc\\EuropeanResistor 896 -672 R0 SYMATTR InstName R27 SYMATTR Value 2.2K SYMBOL Misc\\EuropeanResistor -240 -48 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 20K SYMBOL cap -400 -48 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL Misc\\EuropeanResistor 336 112 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 3.9K SYMBOL Misc\\EuropeanResistor 320 -672 R0 SYMATTR InstName R4 SYMATTR Value 12K SYMBOL Misc\\EuropeanResistor -240 -144 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 20K SYMBOL cap -400 -144 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 1µ SYMBOL cap 400 -352 R0 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL voltage 160 -448 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -349 92 Left 2 SYMATTR InstName V3 SYMATTR Value PULSE(5 0 0 1µ 1µ 50µ 100µ) TEXT -224 600 Left 2 !.tran 0 52m 42m TEXT -1048 592 Left 2 ;Tongenerator TEXT -680 144 Left 2 ;2V5DC TEXT -960 440 Left 2 ;1Vpp, 1KHz TEXT 32 112 Left 2 ;14 TEXT -72 96 Left 2 ;13 TEXT -72 160 Left 2 ;12 TEXT -8 184 Left 2 ;1/4 LMC6484 TEXT 632 -488 Left 2 ;14 TEXT 632 -520 Left 2 ;13 TEXT 632 -560 Left 2 ;15 TEXT 736 -384 Left 2 ;6 TEXT 720 -608 Left 2 ;11 TEXT 760 -608 Left 2 ;LM13700 TEXT 632 -456 Left 2 ;16 TEXT 824 -520 Left 2 ;12 TEXT 824 -488 Left 2 ;10 TEXT 832 -456 Left 2 ;9 TEXT -560 -144 Left 2 ;L TEXT -560 -48 Left 2 ;R