Version 4 SHEET 1 1756 680 WIRE -368 -16 -368 -32 WIRE -256 -16 -256 -32 WIRE 304 32 304 16 WIRE 32 64 -112 64 WIRE -368 80 -368 64 WIRE -256 80 -256 64 WIRE -112 96 -112 64 WIRE -160 112 -224 112 WIRE 480 112 448 112 WIRE 496 112 480 112 WIRE 592 112 576 112 WIRE 704 112 656 112 WIRE 32 128 -32 128 WIRE 656 144 656 112 WIRE -160 160 -176 160 WIRE 448 160 448 112 WIRE 448 160 400 160 WIRE 480 160 480 112 WIRE 608 160 480 160 WIRE -112 192 -112 176 WIRE -112 192 -144 192 WIRE 32 192 16 192 WIRE -112 208 -112 192 WIRE 608 208 480 208 WIRE -224 224 -224 112 WIRE -160 224 -224 224 WIRE 448 224 400 224 WIRE 656 240 656 224 WIRE -32 256 -32 128 WIRE 32 256 -32 256 WIRE -160 272 -176 272 WIRE 448 272 448 224 WIRE 480 272 480 208 WIRE 480 272 448 272 WIRE 496 272 480 272 WIRE 592 272 576 272 WIRE 416 288 400 288 WIRE -224 320 -224 224 WIRE -112 320 -112 288 WIRE 32 320 -112 320 WIRE 304 368 304 352 WIRE -224 416 -224 400 FLAG -368 80 0 FLAG -256 80 0 FLAG 416 288 0 FLAG -368 -32 +V FLAG -144 192 0 FLAG -176 160 0 FLAG -176 272 0 FLAG -224 416 0 FLAG 656 240 0 FLAG 704 112 OUT FLAG 592 112 0 FLAG 592 272 0 FLAG -256 -32 -V FLAG 16 192 +V FLAG 304 16 +V FLAG 304 368 -V SYMBOL voltage -368 -32 R0 WINDOW 123 24 138 Left 2 WINDOW 39 24 117 Left 2 SYMATTR InstName V1 SYMATTR Value 1.5 SYMBOL voltage -256 -32 R0 WINDOW 123 24 138 Left 2 WINDOW 39 24 117 Left 2 SYMATTR InstName V2 SYMATTR Value -1.5 SYMBOL e -112 80 R0 SYMATTR InstName E1 SYMATTR Value .5 SYMBOL e -112 192 R0 SYMATTR InstName E2 SYMATTR Value .5 SYMBOL e2 656 128 R0 SYMATTR InstName E3 SYMATTR Value 1 SYMBOL res 592 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 300 SYMBOL res 592 256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 300 SYMBOL LTC6605-14 224 192 R0 SYMATTR InstName U1 SYMBOL voltage -224 304 R0 SYMATTR InstName V3 SYMATTR Value AC 1 TEXT 408 504 Left 2 !.ac oct 20 100K 200Meg TEXT 416 344 Left 2 !.measure pt1 find V(out) at 7Meg\n.measure pt2 find V(out) at 10.5Meg\n.measure pt3 find V(out) at 14Meg\n.measure pt4 find V(out) at 28Meg\n.measure pt5 find V(out) at 70Meg