Version 4
SHEET 1 2580 680
WIRE 576 -592 176 -592
WIRE 1632 -592 704 -592
WIRE 1536 -560 1424 -560
WIRE 528 -528 448 -528
WIRE 1424 -528 1424 -560
WIRE 1536 -512 1536 -560
WIRE 528 -448 528 -528
WIRE 528 -448 448 -448
WIRE 1104 -416 896 -416
WIRE 1232 -416 1184 -416
WIRE 1424 -416 1424 -448
WIRE 1424 -416 1280 -416
WIRE 832 -400 832 -448
WIRE -256 -384 -368 -384
WIRE 128 -384 -80 -384
WIRE 1056 -384 928 -384
WIRE 1424 -384 1424 -416
WIRE -368 -368 -368 -384
WIRE 304 -352 304 -528
WIRE 368 -352 304 -352
WIRE 528 -352 528 -448
WIRE 528 -352 448 -352
WIRE -256 -320 -256 -384
WIRE 2048 -304 1856 -304
WIRE 2368 -304 2176 -304
WIRE 1344 -288 1344 -320
WIRE 992 -272 992 -304
WIRE 1280 -272 1280 -416
WIRE 1312 -272 1280 -272
WIRE 528 -256 528 -352
WIRE 896 -256 896 -416
WIRE 896 -256 528 -256
WIRE 928 -256 928 -384
WIRE 960 -256 928 -256
WIRE 1424 -256 1424 -304
WIRE 1424 -256 1376 -256
WIRE 1712 -256 1424 -256
WIRE 1856 -256 1856 -304
WIRE 1856 -256 1712 -256
WIRE 2048 -256 2048 -304
WIRE 2176 -256 2176 -304
WIRE 2176 -256 2048 -256
WIRE -368 -240 -368 -288
WIRE -80 -240 -80 -384
WIRE -16 -240 -80 -240
WIRE 1056 -240 1056 -384
WIRE 1056 -240 1024 -240
WIRE 1104 -240 1056 -240
WIRE 1232 -240 1232 -416
WIRE 1232 -240 1184 -240
WIRE 1312 -240 1232 -240
WIRE 128 -224 128 -384
WIRE 128 -224 48 -224
WIRE 208 -224 128 -224
WIRE 304 -224 304 -352
WIRE 304 -224 288 -224
WIRE 368 -224 304 -224
WIRE 832 -224 832 -320
WIRE 960 -224 832 -224
WIRE 1712 -224 1712 -256
WIRE -256 -208 -256 -240
WIRE -16 -208 -256 -208
WIRE 528 -208 528 -256
WIRE 528 -208 432 -208
WIRE 832 -208 832 -224
WIRE 1856 -208 1856 -256
WIRE 2048 -208 2048 -256
WIRE 2048 -208 1856 -208
WIRE 2176 -208 2176 -256
WIRE 2368 -208 2368 -304
WIRE 2368 -208 2176 -208
WIRE 368 -192 320 -192
WIRE 992 -176 992 -208
WIRE 1344 -160 1344 -224
WIRE 320 -112 320 -192
WIRE 832 -112 832 -128
WIRE 1712 -112 1712 -160
WIRE -416 -80 -544 -80
WIRE -304 -80 -416 -80
WIRE -256 -80 -256 -208
WIRE -256 -80 -304 -80
WIRE -192 -80 -256 -80
WIRE -64 -80 -192 -80
WIRE -544 -32 -544 -80
WIRE -416 -32 -416 -80
WIRE -304 -32 -304 -80
WIRE -192 -32 -192 -80
WIRE -64 -32 -64 -80
WIRE 176 80 176 -592
WIRE 576 80 576 -592
WIRE 576 80 176 80
WIRE 704 80 704 -592
WIRE 1632 80 1632 -592
WIRE 1632 80 704 80
WIRE 80 112 -864 112
WIRE -304 160 -304 48
WIRE 1728 160 1728 128
WIRE 1840 160 1840 128
WIRE 1952 160 1952 128
WIRE 2064 160 2064 128
WIRE 2160 160 2160 128
WIRE 1728 288 1728 240
WIRE 1840 288 1840 240
WIRE 1952 288 1952 240
WIRE 2064 288 2064 240
WIRE 2160 288 2160 240
WIRE -544 320 -544 240
WIRE -416 320 -416 240
WIRE -416 320 -544 320
WIRE -304 320 -304 240
WIRE -304 320 -416 320
WIRE -192 320 -192 240
WIRE -192 320 -304 320
WIRE -64 320 -64 240
WIRE -64 320 -192 320
WIRE -64 352 -64 320
WIRE -864 384 -864 112
WIRE 80 384 80 112
WIRE 80 384 -864 384
FLAG -368 -240 0
FLAG -64 352 0
FLAG 1728 288 0
FLAG 1840 288 0
FLAG 1728 128 12V+
FLAG 1840 128 12V-
FLAG 832 -112 0
FLAG 1536 -512 0
FLAG 320 -112 0
FLAG 1952 288 0
FLAG 1952 128 +5V_ref
FLAG 1712 -112 0
FLAG 832 -448 +5V_ref
FLAG 2064 288 0
FLAG 2064 128 5V
FLAG 2160 288 0
FLAG 2160 128 -5V
FLAG 400 -176 -5V
FLAG 16 -256 5V
FLAG 400 -240 5V
FLAG 992 -304 5V
FLAG 1344 -320 5V
FLAG 16 -192 -5V
FLAG 1344 -160 -5V
FLAG 992 -176 -5V
SYMBOL Opamps\\OP27 16 -288 R0
SYMATTR InstName O1
SYMBOL Misc\\EuropeanResistor -80 64 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R6
SYMATTR Value 90k
SYMBOL Misc\\EuropeanResistor -272 -224 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R1
SYMATTR Value 90k
SYMBOL voltage -368 -384 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -37 10 Left 2
WINDOW 3 -37 -25 Left 2
SYMATTR InstName G1
SYMATTR Value SINE(0 25 50k 0.0002)
SYMBOL voltage 1840 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -40 97 Left 2
WINDOW 3 -49 119 Left 2
SYMATTR InstName V2
SYMATTR Value -12
SYMBOL voltage 1728 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -40 97 Left 2
WINDOW 3 -41 120 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL Misc\\EuropeanResistor 848 -416 M0
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 848 -224 M0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 1200 -224 M270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R13
SYMATTR Value 10.0k
SYMBOL Misc\\EuropeanResistor 1200 -400 M270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R14
SYMATTR Value 10.0k
SYMBOL Misc\\EuropeanResistor 1408 -432 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R15
SYMATTR Value 10.0k
SYMBOL Misc\\EuropeanResistor 1408 -288 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R16
SYMATTR Value 10.0k
SYMBOL Misc\\EuropeanResistor -208 64 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R5
SYMATTR Value 30k
SYMBOL Misc\\EuropeanResistor -320 64 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R4
SYMATTR Value 9.9k
SYMBOL Misc\\EuropeanResistor -432 64 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R3
SYMATTR Value 5.9k
SYMBOL Misc\\EuropeanResistor -560 64 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 1.9k
SYMBOL Misc\\EuropeanResistor 352 -368 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 352 -464 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 352 -544 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100k
SYMBOL Misc\\EuropeanResistor 192 -240 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL voltage 1952 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -40 97 Left 2
WINDOW 3 -25 116 Left 2
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL Opamps\\UniversalOpamp2 400 -208 R0
SYMATTR InstName O2
SYMBOL schottky 1728 -160 R180
WINDOW 0 -32 29 Left 2
WINDOW 3 -74 5 Left 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage 2064 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -40 97 Left 2
WINDOW 3 -25 116 Left 2
SYMATTR InstName V4
SYMATTR Value 5
SYMBOL Misc\\EuropeanResistor -560 256 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName Ri_1
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor -432 256 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName Ri2
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor -320 256 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName Ri3
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor -208 256 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName Ri4
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor -80 256 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName Ri5
SYMATTR Value 100
SYMBOL voltage 2160 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -40 97 Left 2
WINDOW 3 -25 116 Left 2
SYMATTR InstName V5
SYMATTR Value -5
SYMBOL Opamps\\AD823 992 -304 R0
SYMATTR InstName U2
SYMBOL Opamps\\AD823 1344 -320 R0
SYMATTR InstName U3
TEXT 1704 344 Left 2 !.tran 0 0.0003 0.0002 startup
TEXT 1040 -32 Left 2 ;OP823\nOffset Addition (+2.5)
TEXT -792 224 Left 2 ;Analog Demux\nDG408
TEXT 232 -32 Left 2 ;PGA:\nAD8253\nGain: x1, x10, x100, x1000
TEXT 2208 -272 Left 2 ;ADC\nVin: 0-5V
TEXT 1888 -272 Left 2 ;Filter\nLTC1569-7