Version 4 SHEET 1 2992 960 WIRE 1456 -1088 1424 -1088 WIRE 1504 -1088 1456 -1088 WIRE 1744 -1088 1504 -1088 WIRE 2112 -1088 1744 -1088 WIRE 2272 -1088 2112 -1088 WIRE 496 -1024 432 -1024 WIRE 624 -1024 560 -1024 WIRE 1504 -1024 1504 -1088 WIRE 1744 -1024 1744 -1088 WIRE 2112 -1024 2112 -1088 WIRE 2272 -1024 2272 -1088 WIRE 432 -960 432 -1024 WIRE 480 -960 432 -960 WIRE 624 -960 624 -1024 WIRE 624 -960 560 -960 WIRE 160 -880 96 -880 WIRE 192 -880 160 -880 WIRE 304 -880 192 -880 WIRE 432 -880 432 -960 WIRE 432 -880 304 -880 WIRE 496 -880 432 -880 WIRE 2464 -880 2400 -880 WIRE 624 -864 624 -960 WIRE 624 -864 560 -864 WIRE 720 -864 624 -864 WIRE 192 -848 192 -880 WIRE 304 -848 304 -880 WIRE 496 -848 448 -848 WIRE 1088 -848 1024 -848 WIRE 96 -832 96 -880 WIRE 448 -816 448 -848 WIRE 944 -784 912 -784 WIRE 1088 -784 944 -784 WIRE 2464 -784 2464 -880 WIRE 2464 -784 2400 -784 WIRE 2512 -784 2464 -784 WIRE 2544 -784 2512 -784 WIRE 96 -736 96 -752 WIRE 192 -736 192 -784 WIRE 304 -736 304 -768 WIRE 1024 -736 1024 -848 WIRE 496 -672 432 -672 WIRE 624 -672 560 -672 WIRE 1024 -656 1024 -672 WIRE 1088 -656 1024 -656 WIRE 2448 -624 2400 -624 WIRE 2496 -624 2448 -624 WIRE 432 -608 432 -672 WIRE 480 -608 432 -608 WIRE 624 -608 624 -672 WIRE 624 -608 560 -608 WIRE 2496 -592 2496 -624 WIRE 1088 -576 1024 -576 WIRE 1024 -560 1024 -576 WIRE 160 -528 96 -528 WIRE 192 -528 160 -528 WIRE 304 -528 192 -528 WIRE 432 -528 432 -608 WIRE 432 -528 304 -528 WIRE 496 -528 432 -528 WIRE 624 -512 624 -608 WIRE 624 -512 560 -512 WIRE 720 -512 624 -512 WIRE 192 -496 192 -528 WIRE 304 -496 304 -528 WIRE 496 -496 448 -496 WIRE 2496 -496 2496 -528 WIRE 96 -480 96 -528 WIRE 448 -464 448 -496 WIRE 944 -448 912 -448 WIRE 1088 -448 944 -448 WIRE 96 -384 96 -400 WIRE 192 -384 192 -432 WIRE 304 -384 304 -416 WIRE 1024 -384 1024 -496 WIRE 1088 -384 1024 -384 WIRE 2448 -336 2400 -336 WIRE 2496 -336 2448 -336 WIRE 496 -304 432 -304 WIRE 624 -304 560 -304 WIRE 2496 -304 2496 -336 WIRE 1088 -288 1024 -288 WIRE 432 -240 432 -304 WIRE 480 -240 432 -240 WIRE 624 -240 624 -304 WIRE 624 -240 560 -240 WIRE 944 -224 912 -224 WIRE 1088 -224 944 -224 WIRE 2496 -192 2496 -224 WIRE 1024 -176 1024 -288 WIRE 160 -160 96 -160 WIRE 192 -160 160 -160 WIRE 304 -160 192 -160 WIRE 432 -160 432 -240 WIRE 432 -160 304 -160 WIRE 496 -160 432 -160 WIRE 624 -144 624 -240 WIRE 624 -144 560 -144 WIRE 720 -144 624 -144 WIRE 192 -128 192 -160 WIRE 304 -128 304 -160 WIRE 496 -128 448 -128 WIRE 96 -112 96 -160 WIRE 448 -96 448 -128 WIRE 1024 -96 1024 -112 WIRE 1088 -96 1024 -96 WIRE 2448 -64 2400 -64 WIRE 2496 -64 2448 -64 WIRE 2496 -32 2496 -64 WIRE 96 -16 96 -32 WIRE 192 -16 192 -64 WIRE 304 -16 304 -48 WIRE 1088 -16 1024 -16 WIRE 1024 0 1024 -16 WIRE 496 48 432 48 WIRE 624 48 560 48 WIRE 2496 64 2496 32 WIRE 432 112 432 48 WIRE 480 112 432 112 WIRE 624 112 624 48 WIRE 624 112 560 112 WIRE 944 112 912 112 WIRE 1088 112 944 112 WIRE 1024 176 1024 64 WIRE 1088 176 1024 176 WIRE 160 192 96 192 WIRE 192 192 160 192 WIRE 304 192 192 192 WIRE 432 192 432 112 WIRE 432 192 304 192 WIRE 496 192 432 192 WIRE 624 208 624 112 WIRE 624 208 560 208 WIRE 720 208 624 208 WIRE 192 224 192 192 WIRE 304 224 304 192 WIRE 496 224 448 224 WIRE 96 240 96 192 WIRE 448 256 448 224 WIRE 1504 320 1504 272 WIRE 1744 320 1744 272 WIRE 96 336 96 320 WIRE 192 336 192 288 WIRE 304 336 304 304 WIRE 288 512 288 496 WIRE 736 512 736 496 WIRE 1216 512 1216 480 WIRE 1424 512 1424 480 WIRE 288 528 288 512 WIRE 736 528 736 512 WIRE 192 560 160 560 WIRE 256 560 192 560 WIRE 640 560 608 560 WIRE 704 560 640 560 WIRE 400 576 336 576 WIRE 416 576 400 576 WIRE 848 576 784 576 WIRE 864 576 848 576 WIRE 192 592 160 592 WIRE 256 592 192 592 WIRE 640 592 608 592 WIRE 704 592 640 592 WIRE 1216 640 1216 592 WIRE 1424 640 1424 592 WIRE 288 656 288 624 WIRE 736 656 736 624 FLAG 96 -736 0 FLAG 720 -864 Sin+ FLAG 160 -880 IN1+ FLAG 528 -896 +V FLAG 528 -832 -V FLAG 1216 480 +V FLAG 1216 640 0 FLAG 1424 480 -V FLAG 1424 640 0 FLAG 448 -816 0 FLAG 192 -736 0 FLAG 304 -736 0 FLAG 96 -384 0 FLAG 720 -512 Sin- FLAG 160 -528 IN1- FLAG 528 -544 +V FLAG 528 -480 -V FLAG 448 -464 0 FLAG 192 -384 0 FLAG 304 -384 0 FLAG 96 -16 0 FLAG 720 -144 Cos+ FLAG 160 -160 IN2+ FLAG 528 -176 +V FLAG 528 -112 -V FLAG 448 -96 0 FLAG 192 -16 0 FLAG 304 -16 0 FLAG 96 336 0 FLAG 720 208 Cos- FLAG 160 192 IN2- FLAG 528 176 +V FLAG 528 240 -V FLAG 448 256 0 FLAG 192 336 0 FLAG 304 336 0 FLAG 2496 -192 0 FLAG 2496 -496 0 FLAG 2496 64 0 FLAG 2448 -64 SDOB FLAG 2448 -624 SDOA FLAG 2448 -336 CNV FLAG 1504 320 0 FLAG 2512 -784 VCC FLAG 1456 -1088 +V FLAG 288 656 0 FLAG 192 592 Sin+ FLAG 192 560 Sin- FLAG 288 512 +V FLAG 400 576 Sine FLAG 736 656 0 FLAG 640 592 Cos+ FLAG 640 560 Cos- FLAG 736 512 +V FLAG 848 576 Cosine FLAG 1744 320 0 FLAG 944 -224 Cos+ FLAG 944 112 Cos- FLAG 944 -448 Sin- FLAG 944 -784 Sin+ SYMBOL Opamps\\AD8675 528 -928 R0 SYMATTR InstName U1 SYMBOL voltage 1216 496 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL voltage 1424 496 R0 WINDOW 123 24 146 Left 2 WINDOW 39 24 125 Left 2 SYMATTR InstName V2 SYMATTR Value -5 SYMBOL res 576 -976 R90 WINDOW 0 19 113 VBottom 2 WINDOW 3 -10 -12 VTop 2 SYMATTR InstName R1 SYMATTR Value 60.4k SYMBOL cap 560 -1040 R90 WINDOW 0 15 97 VBottom 2 WINDOW 3 -10 -20 VTop 2 SYMATTR InstName C1 SYMATTR Value 12p SYMBOL current 96 -832 M0 WINDOW 0 35 12 Left 2 WINDOW 3 45 44 Left 2 WINDOW 123 43 79 Left 2 SYMATTR InstName I1 SYMATTR Value PULSE(0 50u 0 10p 10p 10u 20u) SYMATTR Value2 AC 0.5 SYMBOL cap 176 -848 R0 SYMATTR InstName C2 SYMATTR Value 100p SYMBOL res 288 -864 R0 SYMATTR InstName R2 SYMATTR Value 1G SYMBOL Opamps\\AD8675 528 -576 R0 SYMATTR InstName U2 SYMBOL res 576 -624 R90 WINDOW 0 19 113 VBottom 2 WINDOW 3 -10 -12 VTop 2 SYMATTR InstName R3 SYMATTR Value 60.4k SYMBOL cap 560 -688 R90 WINDOW 0 15 97 VBottom 2 WINDOW 3 -10 -20 VTop 2 SYMATTR InstName C3 SYMATTR Value 12p SYMBOL current 96 -480 M0 WINDOW 0 35 12 Left 2 WINDOW 3 35 38 Left 2 WINDOW 123 35 73 Left 2 SYMATTR InstName I2 SYMATTR Value PULSE(0 50u 10u 10p 10p 10u 20u) SYMATTR Value2 AC 0.5 180 SYMBOL cap 176 -496 R0 SYMATTR InstName C4 SYMATTR Value 100p SYMBOL res 288 -512 R0 SYMATTR InstName R4 SYMATTR Value 1G SYMBOL Opamps\\AD8675 528 -208 R0 SYMATTR InstName U3 SYMBOL res 576 -256 R90 WINDOW 0 19 113 VBottom 2 WINDOW 3 -10 -12 VTop 2 SYMATTR InstName R5 SYMATTR Value 60.4k SYMBOL cap 560 -320 R90 WINDOW 0 15 97 VBottom 2 WINDOW 3 -10 -20 VTop 2 SYMATTR InstName C5 SYMATTR Value 12p SYMBOL current 96 -112 M0 WINDOW 0 35 12 Left 2 WINDOW 3 42 45 Left 2 WINDOW 123 44 77 Left 2 SYMATTR InstName I3 SYMATTR Value PULSE(0 50u 5u 10p 10p 10u 20u) SYMATTR Value2 AC 0.5 SYMBOL cap 176 -128 R0 SYMATTR InstName C6 SYMATTR Value 100p SYMBOL res 288 -144 R0 SYMATTR InstName R6 SYMATTR Value 1G SYMBOL Opamps\\AD8675 528 144 R0 SYMATTR InstName U4 SYMBOL res 576 96 R90 WINDOW 0 19 113 VBottom 2 WINDOW 3 -10 -12 VTop 2 SYMATTR InstName R7 SYMATTR Value 60.4k SYMBOL cap 560 32 R90 WINDOW 0 15 97 VBottom 2 WINDOW 3 -10 -20 VTop 2 SYMATTR InstName C7 SYMATTR Value 12p SYMBOL current 96 240 M0 WINDOW 0 35 12 Left 2 WINDOW 3 42 48 Left 2 WINDOW 123 40 81 Left 2 SYMATTR InstName I4 SYMATTR Value PULSE(0 50u 15u 10p 10p 10u 20u) SYMATTR Value2 AC 0.5 180 SYMBOL cap 176 224 R0 SYMATTR InstName C8 SYMATTR Value 100p SYMBOL res 288 208 R0 SYMATTR InstName R8 SYMATTR Value 1G SYMBOL ADAQ4380 1776 -336 R0 SYMATTR InstName U5 SYMBOL voltage 2496 -320 R0 WINDOW 0 15 7 Left 2 WINDOW 3 24 96 Invisible 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value PULSE(3.3 0 50n 0.1n 0.1n 200n {1/fs}) SYMBOL cap 2480 -592 R0 SYMATTR InstName C13 SYMATTR Value 10p SYMBOL cap 2480 -32 R0 SYMATTR InstName C14 SYMATTR Value 10p SYMBOL Comparators\\LTC6702 288 576 R0 SYMATTR InstName U6 SYMBOL Comparators\\LTC6702 736 576 R0 SYMATTR InstName U7 SYMBOL cap 1040 -736 M0 SYMATTR InstName C9 SYMATTR Value 82p SYMBOL cap 1040 -496 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C10 SYMATTR Value 82p SYMBOL cap 1040 -176 M0 SYMATTR InstName C11 SYMATTR Value 82p SYMBOL cap 1040 64 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C12 SYMATTR Value 82p TEXT 1816 448 Left 4 !.tran 0 120u 20u TEXT 1816 504 Left 4 !;ac dec 201 1k 1g TEXT 1816 560 Left 4 !;noise V(SDOA) V1 dec 201 1 1g TEXT 144 -1568 Left 7 ;Optical Encoder Signal Conditioning System TEXT 1456 -1384 Right 5 ;For TIA Design, visit Photodiode Circuit Design Wizard TEXT 72 -1304 Left 4 ;TIA:\n Target Pulse Width: 10us\n Peak Voltage: 1.5V\n System Bandwidth: 350 kHz\n SNR: 87.5 dB TEXT 2552 -264 Left 3 !.param fs 4e6