Version 4 SHEET 1 3724 1652 WIRE 224 -48 192 -48 WIRE 48 -16 48 -64 WIRE 1520 80 1520 16 WIRE 1520 80 1472 80 WIRE 1824 80 1824 16 WIRE 1824 80 1776 80 WIRE 48 96 48 64 WIRE 192 112 192 -48 WIRE 1472 128 1472 80 WIRE 1520 128 1520 80 WIRE 1776 128 1776 80 WIRE 1824 128 1824 80 WIRE 192 224 192 192 WIRE 1472 224 1472 192 WIRE 1520 224 1520 192 WIRE 1520 224 1472 224 WIRE 1600 224 1520 224 WIRE 1776 224 1776 192 WIRE 1824 224 1824 192 WIRE 1824 224 1776 224 WIRE 1904 224 1824 224 WIRE 1472 256 1472 224 WIRE 1520 256 1520 224 WIRE 1776 256 1776 224 WIRE 1824 256 1824 224 WIRE 1472 352 1472 320 WIRE 1520 352 1520 320 WIRE 1520 352 1472 352 WIRE 1776 352 1776 320 WIRE 1824 352 1824 320 WIRE 1824 352 1776 352 WIRE -160 368 -160 288 WIRE -80 368 -160 368 WIRE 224 368 -80 368 WIRE 400 368 224 368 WIRE 464 368 400 368 WIRE 656 368 544 368 WIRE 1088 368 736 368 WIRE 1520 400 1520 352 WIRE 1824 400 1824 352 WIRE -160 448 -160 368 WIRE -80 448 -80 368 WIRE 224 448 224 368 WIRE -160 576 -160 512 WIRE -80 576 -80 512 WIRE 224 576 224 528 WIRE 768 672 768 592 WIRE 400 816 400 368 WIRE 512 816 400 816 WIRE 768 816 768 752 WIRE 768 816 576 816 WIRE 1024 816 1024 768 WIRE 1024 816 768 816 WIRE 1104 816 1024 816 WIRE 1264 816 1216 816 WIRE 768 896 768 816 WIRE 768 1024 768 976 WIRE 416 1168 416 1120 WIRE 880 1232 880 1168 WIRE 16 1280 -64 1280 WIRE 160 1280 128 1280 WIRE 288 1280 240 1280 WIRE 416 1280 416 1248 WIRE 416 1280 352 1280 WIRE 512 1280 512 1184 WIRE 512 1280 416 1280 WIRE 816 1280 512 1280 WIRE 416 1312 416 1280 WIRE 880 1344 880 1328 WIRE 1008 1344 880 1344 WIRE 1136 1344 1008 1344 WIRE 880 1392 880 1344 WIRE 1008 1392 1008 1344 WIRE 416 1424 416 1392 WIRE 880 1504 880 1472 WIRE 1008 1504 1008 1456 FLAG 48 96 0 FLAG 224 -48 FREF IOPIN 224 -48 Out FLAG 192 224 0 FLAG -160 288 ANT FLAG -160 576 0 FLAG -80 576 0 FLAG 48 -64 COM FLAG 1520 400 0 FLAG 1520 16 COM FLAG 1600 224 FINPUT FLAG 1824 400 0 FLAG 1824 16 COM FLAG 1024 768 FSHIFT FLAG 1088 368 FINPUT FLAG 1264 816 OUT_SHIFTED FLAG 416 1424 0 FLAG 512 1184 FREF_SIN FLAG -64 1280 FREF IOPIN -64 1280 In FLAG 416 1120 COM FLAG 880 1168 COM FLAG 1136 1344 FINPUT FLAG 880 1504 0 FLAG 1008 1504 0 FLAG 1904 224 FSHIFT FLAG 224 576 0 FLAG 768 1024 0 FLAG 768 592 COM SYMBOL voltage 48 -32 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 3.3V SYMBOL voltage 192 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 3.3 0 0.00000001 0.00000001 0.00000048 0.00000096) SYMBOL ind 448 384 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 2mH SYMATTR SpiceLine Ipk=0.01 Rser=38.7 Rpar=11.3Meg Cpar=1.627pF SYMBOL cap -176 448 R0 SYMATTR InstName Cant SYMATTR Value 8pF SYMBOL cap -96 448 R0 SYMATTR InstName Chand SYMATTR Value {Chand} SYMBOL diode 1488 192 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMBOL diode 1488 320 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMBOL cap 1504 128 R0 SYMATTR InstName C6 SYMATTR Value 1.5pF SYMBOL cap 1504 256 R0 SYMATTR InstName C7 SYMATTR Value 1.5pF SYMBOL diode 1792 192 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D5 SYMBOL diode 1792 320 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D6 SYMBOL cap 1808 128 R0 SYMATTR InstName C8 SYMATTR Value 1.5pF SYMBOL cap 1808 256 R0 SYMATTR InstName C9 SYMATTR Value 1.5pF SYMBOL ind 144 1296 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 1mH SYMATTR SpiceLine Ipk=0.06 Rser=30 SYMBOL cap 288 1296 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 22pF SYMBOL res 400 1296 R0 SYMATTR InstName R5 SYMATTR Value 560 SYMBOL EXTRA\\74HC\\74hc04 64 1216 R0 SYMATTR InstName U5 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res 400 1152 R0 SYMATTR InstName R6 SYMATTR Value 330 SYMBOL npn 816 1232 R0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL res 896 1488 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R8 SYMATTR Value 100 SYMBOL cap 992 1392 R0 SYMATTR InstName C5 SYMATTR Value 2000pF SYMBOL cap 576 800 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1pF SYMBOL EXTRA\\74HC\\74hc04 1152 752 R0 SYMATTR InstName U1 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res 640 384 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 150 SYMBOL res 208 432 R0 SYMATTR InstName R2 SYMATTR Value 1000K SYMBOL res 752 880 R0 SYMATTR InstName R3 SYMATTR Value 22K SYMBOL res 752 656 R0 SYMATTR InstName R4 SYMATTR Value 22K TEXT 32 -304 Left 2 !.tran 0 0.000055 0.000050 0.0000000001 TEXT 32 -272 Left 2 !.step param Chand list 0pF 0.1pF 0.2pF 0.3pF 0.4pF 0.5pF 0.6pF 0.7pF 0.8pF 0.9pF 1pF 1.1pF 1.2pF 1.3pF 1.4pF 1.5pF 1.6pF 1.7pF 1.8pF 1.9pF 2.0pF 2.1pF 2.2pF 2.3pF 2.4pF 2.5pF\n.MEAS TRAN res1 FIND V(out) AT=1m TEXT 328 -48 Left 2 ;Ref clock ~0.5..1.5 MHz 3.3V TEXT 32 -368 Left 4 ;Phase Shift Theremin Sensor TEXT 544 272 Left 2 ;Q correction\nRecommended range: 47 .. 680 Ohm TEXT 1728 -24 Left 2 ;ESD protection SP721 TEXT 328 -8 Left 2 ;Calibration: with hand FAR from antenna,\nchoose FREF so that OUT is in 1..1.5V range TEXT 40 -208 Left 2 ;Simulate for hand C from 0 to 3pF with 0.1pF step