Version 4 SHEET 1 1668 768 WIRE -624 -608 -688 -608 WIRE -496 -608 -544 -608 WIRE -368 -608 -416 -608 WIRE 64 -592 0 -592 WIRE 224 -592 128 -592 WIRE -688 -560 -688 -608 WIRE 224 -544 224 -592 WIRE 928 -544 224 -544 WIRE 0 -496 0 -592 WIRE 64 -496 0 -496 WIRE 224 -496 224 -544 WIRE 224 -496 144 -496 WIRE 0 -480 0 -496 WIRE -624 -448 -688 -448 WIRE -496 -448 -544 -448 WIRE -368 -448 -416 -448 WIRE 640 -448 576 -448 WIRE 832 -448 704 -448 WIRE -688 -400 -688 -448 WIRE -368 -400 -368 -448 WIRE 96 -384 96 -416 WIRE -160 -368 -192 -368 WIRE 0 -368 0 -400 WIRE 0 -368 -160 -368 WIRE 64 -368 0 -368 WIRE 272 -352 128 -352 WIRE 368 -352 272 -352 WIRE 576 -352 576 -448 WIRE 576 -352 448 -352 WIRE 640 -352 576 -352 WIRE 832 -352 832 -448 WIRE 832 -352 720 -352 WIRE 64 -336 0 -336 WIRE 1440 -336 1440 -368 WIRE -368 -320 -368 -336 WIRE -688 -304 -688 -320 WIRE 0 -288 0 -336 WIRE 0 -272 0 -288 WIRE 96 -272 96 -320 WIRE 1440 -240 1440 -272 WIRE 688 -224 688 -256 WIRE 1440 -224 1440 -240 WIRE 576 -208 576 -352 WIRE 656 -208 576 -208 WIRE -624 -192 -688 -192 WIRE -496 -192 -544 -192 WIRE -368 -192 -416 -192 WIRE 832 -192 832 -352 WIRE 832 -192 720 -192 WIRE 928 -192 928 -544 WIRE 928 -192 832 -192 WIRE 1056 -192 928 -192 WIRE 1104 -192 1056 -192 WIRE 656 -176 576 -176 WIRE -688 -160 -688 -192 WIRE -368 -144 -368 -192 WIRE 688 -112 688 -160 WIRE 1440 -112 1440 -144 WIRE 64 -96 0 -96 WIRE 224 -96 128 -96 WIRE 1440 -96 1440 -112 WIRE 1472 -96 1440 -96 WIRE 1568 -96 1552 -96 WIRE 1584 -96 1568 -96 WIRE -688 -64 -688 -80 WIRE 224 -48 224 -96 WIRE 928 -48 928 -192 WIRE 928 -48 224 -48 WIRE 0 0 0 -96 WIRE 64 0 0 0 WIRE 224 0 224 -48 WIRE 224 0 144 0 WIRE -640 96 -640 80 WIRE -416 96 -416 80 WIRE 96 112 96 80 WIRE -640 128 -640 96 WIRE -416 128 -416 96 WIRE -48 128 -80 128 WIRE 0 128 0 0 WIRE 0 128 -48 128 WIRE 64 128 0 128 WIRE -528 144 -592 144 WIRE -464 144 -528 144 WIRE 272 144 128 144 WIRE 368 144 272 144 WIRE 576 144 576 -176 WIRE 576 144 448 144 WIRE 640 144 576 144 WIRE 768 144 720 144 WIRE 832 144 768 144 WIRE 64 160 0 160 WIRE 0 192 0 160 WIRE 0 224 0 192 WIRE 96 224 96 176 WIRE -640 240 -640 208 WIRE -592 240 -592 192 WIRE -592 240 -640 240 WIRE -528 240 -528 224 WIRE -528 240 -592 240 WIRE -464 240 -464 192 WIRE -464 240 -528 240 WIRE -416 240 -416 208 WIRE -416 240 -464 240 WIRE -368 240 -416 240 WIRE 576 256 576 144 WIRE 640 256 576 256 WIRE 768 256 768 144 WIRE 768 256 704 256 FLAG 0 -288 gndi FLAG 0 192 gndi FLAG -688 -304 gndi FLAG -688 -64 gndi FLAG -368 -320 gndi FLAG -368 -80 gndi FLAG -640 96 in_n FLAG -416 96 in_p FLAG -368 -448 vcc FLAG -368 -192 vee FLAG -688 -560 0 FLAG -368 -608 gndi FLAG 96 -416 vcc FLAG 96 80 vcc FLAG 96 224 vee FLAG 96 -272 vee FLAG -160 -368 in_p FLAG 272 -352 out_p FLAG 272 144 out_n FLAG -368 240 gndi FLAG 688 -256 vcc FLAG 688 -112 vee FLAG 1056 -192 out FLAG 832 144 gndi FLAG -48 128 in_n FLAG 1440 -368 0 FLAG 1440 -240 0 FLAG 1440 -112 0 FLAG 1568 -96 0 FLAG 1648 -96 0 FLAG 0 -592 Toc SYMBOL OpAmps\\opamp2 96 -416 R0 SYMATTR InstName U1 SYMATTR Value OPA1611 SYMBOL res 160 -512 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 820 SYMBOL cap 128 -608 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 2.7n SYMBOL cap -384 -400 R0 SYMATTR InstName C3 SYMATTR Value 100n SYMBOL cap -384 -144 R0 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL voltage -688 -176 R0 SYMATTR InstName V1 SYMATTR Value -4 SYMBOL voltage -688 -416 R0 SYMATTR InstName V2 SYMATTR Value 4 SYMBOL OpAmps\\opamp2 96 80 R0 SYMATTR InstName U2 SYMATTR Value OPA1611 SYMBOL res 160 -16 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 820 SYMBOL cap 128 -112 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 2.7n SYMBOL g -416 112 R0 SYMATTR InstName G1 SYMATTR Value 1 SYMBOL g -640 112 M0 SYMATTR InstName G2 SYMATTR Value -1 SYMBOL voltage -528 128 R0 WINDOW 0 11 -31 Left 2 WINDOW 3 -77 144 Left 2 WINDOW 123 -77 172 Left 2 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value SINE(0 3.9m 1k) SYMATTR Value2 AC 1 SYMBOL res -528 -464 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R3 SYMATTR Value {Rp} SYMBOL ind -512 -432 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value {Lp} SYMBOL res -528 -208 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R4 SYMATTR Value {Rp} SYMBOL ind -512 -176 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value {Lp} SYMBOL res -528 -624 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R5 SYMATTR Value {Rp} SYMBOL ind -512 -592 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value {Lp} SYMBOL res 736 -368 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R6 SYMATTR Value {Rbuf} SYMBOL res 736 128 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R7 SYMATTR Value {Rbuf} SYMBOL res 464 -368 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R8 SYMATTR Value {Rbuf} SYMBOL res 464 128 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R9 SYMATTR Value {Rbuf} SYMBOL cap 704 240 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 2.7n SYMBOL cap 704 -464 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 2.7n SYMBOL OpAmps\\opamp2 688 -256 R0 SYMATTR InstName U3 SYMATTR Value OPA1622 SYMBOL ind -16 -496 R0 SYMATTR InstName L4 SYMATTR Value 1G SYMBOL res 1568 -112 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 100k SYMBOL res 1456 -128 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R12 SYMATTR Value 100 SYMBOL cap 1424 -336 R0 SYMATTR InstName C8 SYMATTR Value 16p SYMBOL cap 1648 -112 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 0.1p TEXT -696 480 Left 2 !.lib OPA1611.lib TEXT -696 528 Left 2 !.lib OPA1622.lib TEXT -704 400 Left 2 !.param Rp 0.2 TEXT -704 432 Left 2 !.param Lp 3n TEXT -696 352 Left 2 ;.tran 0 1m 0 1u TEXT -464 352 Left 2 !.ac dec 100 1 100G TEXT -472 400 Left 2 !.param Rbuf 1k