Version 4 SHEET 1 1728 1364 WIRE 320 272 320 368 WIRE 464 368 384 368 WIRE 320 368 320 416 WIRE 512 272 560 272 WIRE 624 272 624 368 WIRE 624 368 544 368 WIRE 320 480 320 512 WIRE 560 272 624 272 WIRE 320 272 400 272 WIRE 32 272 -80 272 WIRE -80 272 -80 368 WIRE 64 368 -16 368 WIRE -80 368 -80 416 WIRE -80 480 -80 512 WIRE 96 272 176 272 WIRE 240 272 240 368 WIRE 240 368 144 368 WIRE 1216 -368 1216 -400 WIRE 1216 -480 1216 -512 WIRE 1216 -512 1248 -512 WIRE 1248 -512 1280 -512 WIRE -128 688 -128 800 WIRE 0 800 -64 800 WIRE -128 800 -128 832 WIRE 32 688 96 688 WIRE 160 688 160 800 WIRE 160 800 80 800 WIRE -128 896 -128 928 WIRE 96 688 160 688 WIRE -128 688 -80 688 WIRE -80 -304 -80 -192 WIRE 144 -80 -80 -80 WIRE 224 -192 400 -192 WIRE 400 -192 400 -176 WIRE 400 -80 208 -80 WIRE -80 32 -80 64 WIRE 400 -192 448 -192 WIRE -80 -192 48 -192 WIRE 400 -96 400 -80 WIRE 400 -32 400 -80 WIRE 400 32 400 64 WIRE -80 -304 64 -304 WIRE 144 -304 400 -304 WIRE 400 -304 400 -192 WIRE 48 -192 112 -192 WIRE -80 -80 -80 -32 WIRE -80 -192 -80 -80 WIRE -16 368 -80 368 WIRE 384 368 320 368 WIRE -64 800 -128 800 WIRE 176 272 240 272 WIRE 656 -304 656 -192 WIRE 880 -80 656 -80 WIRE 960 -192 1136 -192 WIRE 1136 -192 1136 -176 WIRE 1136 -80 960 -80 WIRE 656 32 656 64 WIRE 1136 -192 1184 -192 WIRE 656 -192 784 -192 WIRE 1136 -96 1136 -80 WIRE 1136 -32 1136 -80 WIRE 1136 32 1136 64 WIRE 656 -304 800 -304 WIRE 880 -304 1136 -304 WIRE 1136 -304 1136 -192 WIRE 784 -192 848 -192 WIRE 656 -80 656 -32 WIRE 656 -192 656 -80 WIRE 800 272 800 384 WIRE 944 384 864 384 WIRE 800 384 800 416 WIRE 992 272 1040 272 WIRE 1104 272 1104 288 WIRE 1104 384 1024 384 WIRE 800 480 800 512 WIRE 1040 272 1104 272 WIRE 800 272 880 272 WIRE 864 384 800 384 WIRE 1104 368 1104 384 WIRE 304 688 304 800 WIRE 448 800 368 800 WIRE 304 800 304 832 WIRE 496 688 544 688 WIRE 608 688 608 704 WIRE 608 800 528 800 WIRE 304 896 304 928 WIRE 544 688 608 688 WIRE 304 688 384 688 WIRE 368 800 304 800 WIRE 608 784 608 800 WIRE 608 800 608 832 WIRE 608 896 608 928 WIRE 800 688 800 800 WIRE 944 800 864 800 WIRE 800 800 800 832 WIRE 992 688 1040 688 WIRE 1104 688 1104 704 WIRE 1104 800 1024 800 WIRE 800 896 800 928 WIRE 1040 688 1104 688 WIRE 800 688 880 688 WIRE 864 800 800 800 WIRE 1104 784 1104 800 WIRE 1104 800 1104 832 WIRE 1104 896 1104 928 FLAG 320 512 0 FLAG 560 272 Vosc_out1 FLAG 384 368 Vosc_in1 FLAG -80 512 0 FLAG 176 272 Vosc_out FLAG -16 368 Vosc_in2 FLAG 1216 -368 0 FLAG 1248 -512 VCC FLAG -128 928 0 FLAG 96 688 Vosc_out3 FLAG -64 800 Vosc_in3 FLAG -80 64 0 FLAG 448 -192 Vosc_out8 FLAG 48 -192 Vosc_in8 FLAG 400 64 0 FLAG 656 64 0 FLAG 1184 -192 Vosc_out9 FLAG 784 -192 Vosc_in9 FLAG 1136 64 0 FLAG 800 512 0 FLAG 1040 272 Vosc_out2 FLAG 864 384 Vosc_in2 FLAG 304 928 0 FLAG 544 688 Vosc_out4 FLAG 368 800 Vosc_in4 FLAG 608 928 0 FLAG 800 928 0 FLAG 1040 688 Vosc_out5 FLAG 864 800 Vosc_in5 FLAG 1104 928 0 SYMBOL ind 560 352 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L1 SYMATTR Value 1µH SYMBOL cap 304 416 R0 SYMATTR InstName C1 SYMATTR Value 10000pF SYMBOL Digital\\74HC\\74hc14 448 224 R0 SYMATTR InstName U1 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL Digital\\schmtinv 32 208 R0 SYMATTR InstName A2 SYMATTR SpiceLine VHIGH=3.3 SYMBOL ind 160 352 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L0 SYMATTR Value 1µH SYMBOL cap -96 416 R0 SYMATTR InstName C0 SYMATTR Value 10000pF SYMBOL cap -144 832 R0 SYMATTR InstName C3 SYMATTR Value 330p SYMBOL Digital\\74HC\\74hc14 -32 640 R0 SYMATTR InstName U3 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res -16 816 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL cap -96 -32 R0 SYMATTR InstName C82 SYMATTR Value 220p ic=2 SYMBOL cap 144 -64 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C80 SYMATTR Value 100p Lser=100u Rser=10 Cpar=5p SYMBOL res 384 -192 R0 SYMATTR InstName R81 SYMATTR Value 500 SYMBOL cap 384 -32 R0 SYMATTR InstName C81 SYMATTR Value 220p SYMBOL res 48 -288 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R80 SYMATTR Value 1MEG SYMBOL Misc\\battery 1216 -496 R0 SYMATTR InstName V2 SYMATTR Value 3.3V SYMBOL cap 640 -32 R0 SYMATTR InstName C92 SYMATTR Value 220p ic=2 SYMBOL res 1120 -192 R0 SYMATTR InstName R91 SYMATTR Value 500 SYMBOL cap 1120 -32 R0 SYMATTR InstName C91 SYMATTR Value 220p SYMBOL res 784 -288 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R90 SYMATTR Value 1MEG SYMBOL ind 864 -64 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName L90 SYMATTR Value 100µ SYMBOL ind 1040 368 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L2 SYMATTR Value 100µ SYMBOL cap 784 416 R0 SYMATTR InstName C2 SYMATTR Value 220p SYMBOL Digital\\74HC\\74hc14 928 224 R0 SYMATTR InstName U2 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res 1088 272 R0 SYMATTR InstName R2 SYMATTR Value 500 SYMBOL ind 544 784 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L4 SYMATTR Value 100µ SYMBOL cap 288 832 R0 SYMATTR InstName C42 SYMATTR Value 220p SYMBOL Digital\\74HC\\74hc14 432 640 R0 SYMATTR InstName U4 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL res 592 688 R0 SYMATTR InstName R4 SYMATTR Value 500 SYMBOL cap 592 832 R0 SYMATTR InstName C41 SYMATTR Value 220p SYMBOL ind 1040 784 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L5 SYMATTR Value 100µ SYMBOL cap 784 832 R0 SYMATTR InstName C52 SYMATTR Value 220p SYMBOL res 1088 688 R0 SYMATTR InstName R5 SYMATTR Value 500 SYMBOL cap 1088 832 R0 SYMATTR InstName C51 SYMATTR Value 220p SYMBOL Digital\\74HC\\74hc04 928 624 R0 SYMATTR InstName U5 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL Digital\\74HC\\74hcu04 160 -256 R0 SYMATTR InstName U80 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 SYMBOL Digital\\74HC\\74hcu04 896 -256 R0 SYMATTR InstName U90 SYMATTR SpiceLine VCC=3.3 SPEED=1.0 TRIPDT=1e-9 TEXT -68 -464 Left 0 !.tran 0 100u 0 uic TEXT -72 -544 Left 0 !.include 74hc.lib TEXT 88 -8 Left 0 ;LC-resonator TEXT 208 -544 Left 0 ;Click the right mouse button upon the symbol.\nThe values in the 74HCxx atrribute "Spicemodel: VCC 0" must match \nthe power supply node names.\nHere it means the power supply must provide nodes VCC and 0((GND)\nand its DC value must be 3.3V.\nThe value 3.3 in Spiceline "VCC=3.3" must match the value of the DC-supply voltage.\nYou can change alternatively those values in the model. TEXT 824 -8 Left 0 ;LC-resonator TEXT 376 184 Left 0 ;A bad Schmitt oscillator! TEXT -40 184 Left 0 ;The bad Schmitt oscillator\nusing basic model SCHMITT! TEXT -152 600 Left 0 ;The good Schmitt RC-oscillator! TEXT -80 -688 Left 0 ;LTSPICE Simulation Setup:\nControl Panel->Hacks-> disable "Supply a min. inductor damping if no Rpar is given" TEXT 760 72 Left 0 ;C51,C52 200pF/Freq[MHz] TEXT 24 64 Left 0 ;C51,C52 200pF/Freq[MHz] TEXT -80 -624 Left 0 ;"uic" in .tran together with " .ic=.." attached to capacitor C42 and C52 \n provide immediately the final operating point to the inverters. TEXT 808 184 Left 0 ;Still ahe bad Schmitt oscillator! TEXT 304 608 Left 0 ;Not recommended Schmitt osciillator! TEXT 792 608 Left 0 ;A better LC oscillator wiith an inverter! RECTANGLE Normal 368 -32 -16 -128 RECTANGLE Normal 1104 -32 720 -128 RECTANGLE Normal 256 976 -176 560