Looks much cleaner at 1KHz now, and everything else is >80dB down.
Version 4 SHEET 1 2196 932 WIRE 400 -704 368 -704 WIRE 608 -704 464 -704 WIRE -80 -624 -176 -624 WIRE 16 -624 -80 -624 WIRE 112 -624 96 -624 WIRE 128 -624 112 -624 WIRE 240 -624 208 -624 WIRE 336 -624 240 -624 WIRE 368 -624 368 -704 WIRE 368 -624 336 -624 WIRE 400 -624 368 -624 WIRE 512 -624 464 -624 WIRE -80 -608 -80 -624 WIRE 240 -592 240 -624 WIRE 336 -576 336 -624 WIRE -176 -544 -176 -624 WIRE -208 -496 -288 -496 WIRE -80 -496 -80 -528 WIRE -80 -496 -112 -496 WIRE 0 -496 -80 -496 WIRE 240 -480 240 -512 WIRE 288 -480 240 -480 WIRE 336 -480 336 -512 WIRE 336 -480 288 -480 WIRE 112 -464 112 -624 WIRE 288 -448 288 -480 WIRE 320 -448 288 -448 WIRE 320 -432 320 -448 WIRE 288 -400 288 -448 WIRE 288 -400 240 -400 WIRE 336 -400 288 -400 WIRE -288 -368 -288 -496 WIRE -192 -368 -288 -368 WIRE 0 -368 0 -496 WIRE 0 -368 -112 -368 WIRE 240 -368 240 -400 WIRE 336 -352 336 -400 WIRE 416 -336 384 -336 WIRE 608 -336 608 -704 WIRE 608 -336 480 -336 WIRE -80 -256 -176 -256 WIRE 16 -256 -80 -256 WIRE 112 -256 112 -400 WIRE 112 -256 96 -256 WIRE 144 -256 112 -256 WIRE 240 -256 240 -288 WIRE 240 -256 224 -256 WIRE 336 -256 336 -288 WIRE 336 -256 240 -256 WIRE 384 -256 384 -336 WIRE 384 -256 336 -256 WIRE 416 -256 384 -256 WIRE 512 -256 512 -624 WIRE 512 -256 480 -256 WIRE -80 -224 -80 -256 WIRE 512 -224 512 -256 WIRE 608 -224 608 -336 WIRE -176 -176 -176 -256 WIRE -288 -128 -288 -368 WIRE -208 -128 -288 -128 WIRE -80 -128 -80 -144 WIRE -80 -128 -112 -128 WIRE 0 -128 0 -368 WIRE 0 -128 -80 -128 WIRE 176 -128 0 -128 WIRE 288 -128 256 -128 WIRE 320 -128 288 -128 WIRE 448 -128 400 -128 WIRE 288 -16 288 -128 WIRE 288 -16 -80 -16 WIRE 320 -16 288 -16 WIRE 448 -16 448 -128 WIRE 448 -16 400 -16 WIRE 48 48 48 32 WIRE 448 48 448 -16 WIRE 512 48 512 -144 WIRE 512 48 448 48 WIRE -80 96 -80 -16 WIRE 16 96 -80 96 WIRE 448 96 448 48 WIRE 448 96 176 96 WIRE 16 160 -80 160 WIRE 592 160 176 160 WIRE 608 160 608 -144 WIRE 608 160 592 160 WIRE 736 160 608 160 WIRE 832 160 736 160 WIRE 512 192 512 48 WIRE 592 192 592 160 WIRE 48 224 48 208 WIRE -464 256 -544 256 WIRE -400 256 -464 256 WIRE -80 272 -80 160 WIRE 16 272 -80 272 WIRE 224 272 16 272 WIRE 304 272 288 272 WIRE 448 272 448 96 WIRE 448 272 384 272 WIRE -80 288 -80 272 WIRE 16 288 16 272 WIRE 736 288 720 288 WIRE 832 288 816 288 WIRE 912 288 896 288 WIRE -544 304 -544 256 WIRE 512 304 512 272 WIRE 592 304 592 272 WIRE -400 320 -400 256 WIRE -80 384 -80 368 WIRE -32 384 -80 384 WIRE 16 384 16 352 WIRE 16 384 -32 384 WIRE 768 400 768 384 WIRE -32 416 -32 384 WIRE 592 416 592 368 WIRE 720 416 720 288 WIRE 720 416 592 416 WIRE 736 416 720 416 WIRE 816 432 800 432 WIRE 912 432 912 288 WIRE 912 432 896 432 WIRE 448 448 352 448 WIRE 512 448 512 368 WIRE 512 448 448 448 WIRE 736 448 512 448 WIRE -544 480 -544 384 WIRE -544 480 -624 480 WIRE 592 480 592 416 WIRE 592 480 512 480 WIRE 768 480 768 464 WIRE -624 496 -624 480 WIRE -544 496 -544 480 WIRE -400 496 -400 384 WIRE -400 496 -544 496 WIRE 352 512 352 448 WIRE 512 512 512 480 WIRE 448 528 448 448 WIRE 592 528 592 480 WIRE -544 576 -544 496 WIRE 912 576 912 432 WIRE -400 592 -400 496 WIRE 352 624 352 592 WIRE 448 624 448 592 WIRE 448 624 352 624 WIRE 512 624 512 592 WIRE 512 624 448 624 WIRE 592 624 592 592 WIRE 592 624 512 624 WIRE 352 656 352 624 WIRE -544 752 -544 656 WIRE -464 752 -544 752 WIRE -400 752 -400 656 WIRE -400 752 -464 752 WIRE -288 752 -288 -128 WIRE 400 752 -288 752 WIRE 512 752 400 752 WIRE 624 752 512 752 WIRE 736 752 624 752 WIRE 832 752 736 752 WIRE 912 752 912 656 WIRE 912 752 832 752 WIRE 400 800 400 752 WIRE 512 800 512 752 WIRE 624 800 624 752 WIRE 736 800 736 752 WIRE 832 800 832 752 WIRE 912 800 912 752 WIRE 400 912 400 864 WIRE 512 912 512 864 WIRE 624 912 624 864 WIRE 736 912 736 864 WIRE 832 912 832 864 WIRE 912 912 912 864 FLAG -624 496 0 FLAG 768 384 V+ FLAG 48 224 V- FLAG -464 256 V+ FLAG -464 752 V- FLAG -32 416 0 FLAG 736 160 output FLAG 48 32 V+ FLAG 768 480 V- FLAG 352 656 0 FLAG 320 -432 0 FLAG 912 912 0 FLAG 832 912 0 FLAG 736 912 0 FLAG 624 912 0 FLAG 512 912 0 FLAG 400 912 0 SYMBOL voltage -544 288 R0 WINDOW 123 0 0 Left 0 WINDOW 39 10 135 Left 2 WINDOW 0 12 7 Left 2 WINDOW 3 15 104 Left 2 SYMATTR SpiceLine Rser=0.01 SYMATTR InstName V1 SYMATTR Value 6 SYMBOL res 400 256 R90 WINDOW 0 -7 54 VBottom 2 WINDOW 3 37 50 VTop 2 SYMATTR InstName R1 SYMATTR Value 10.5k SYMBOL cap 288 256 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 15n SYMBOL cap 32 352 R180 WINDOW 0 -33 54 Left 2 WINDOW 3 -49 18 Left 2 SYMATTR InstName C2 SYMATTR Value 15n SYMBOL polcap -416 320 R0 SYMATTR InstName C4 SYMATTR Value 100µ SYMBOL res 272 -144 R90 WINDOW 0 -1 46 VBottom 2 WINDOW 3 35 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 6.34k SYMBOL res 416 -144 R90 WINDOW 0 -4 61 VBottom 2 WINDOW 3 39 55 VTop 2 SYMATTR InstName R8 SYMATTR Value 13k SYMBOL njf -112 -176 R90 WINDOW 0 -37 23 VRight 2 WINDOW 3 -9 -3 VRight 2 SYMATTR InstName J1 SYMATTR Value J112 SYMBOL voltage -544 560 R0 WINDOW 123 0 0 Left 0 WINDOW 39 10 135 Left 2 WINDOW 0 10 0 Left 2 WINDOW 3 15 104 Left 2 SYMATTR SpiceLine Rser=0.01 SYMATTR InstName V2 SYMATTR Value 6 SYMBOL polcap -416 592 R0 SYMATTR InstName C5 SYMATTR Value 100µ SYMBOL res -96 272 R0 SYMATTR InstName R2 SYMATTR Value 10.5k SYMBOL res 496 -240 R0 SYMATTR InstName R9 SYMATTR Value 4.7 SYMBOL pjf -112 -544 R90 WINDOW 0 -34 29 VRight 2 WINDOW 3 -9 -1 VRight 2 SYMATTR InstName J2 SYMATTR Value J175 SYMBOL schottky 464 -720 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D3 SYMATTR Value BAS40HY SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 416 -240 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D5 SYMATTR Value BAS40HY SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 464 -640 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value BAS40HY SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 416 -320 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value BAS40HY SYMATTR Description Diode SYMATTR Type diode SYMBOL res -96 -384 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 330 SYMBOL OpAmps\\LT1994 80 128 R0 WINDOW 3 10 -65 Left 2 WINDOW 0 11 -95 Left 2 SYMATTR InstName U2 SYMBOL OpAmps\\LT1057 768 368 R0 WINDOW 0 19 104 Left 2 WINDOW 3 18 130 Left 2 SYMATTR InstName U1 SYMBOL schottky 496 304 R0 WINDOW 3 53 -28 VRight 2 WINDOW 0 53 91 VRight 2 SYMATTR Value BAS40HY SYMATTR InstName D4 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 576 304 R0 WINDOW 3 50 -51 VRight 2 WINDOW 0 48 74 VRight 2 SYMATTR Value BAS40HY SYMATTR InstName D6 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 432 528 R0 SYMATTR InstName C7 SYMATTR Value 10µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL res 336 496 R0 SYMATTR InstName R11 SYMATTR Value 220k SYMBOL res 496 496 R0 WINDOW 3 29 83 Left 2 SYMATTR Value 220k SYMATTR InstName R12 SYMBOL res 224 -608 R0 WINDOW 0 -62 49 Left 2 WINDOW 3 -66 84 Left 2 SYMATTR InstName R13 SYMATTR Value 100k SYMBOL cap 320 -576 R0 WINDOW 0 -31 5 Left 2 WINDOW 3 -36 50 Left 2 SYMATTR InstName C6 SYMATTR Value 22µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.0028 Lser=544p mfg="Würth Elektronik" pn="885012107005 WCAP-CSGP 0805" type="X5R" SYMBOL res -96 -624 R0 WINDOW 0 36 45 Left 2 WINDOW 3 33 76 Left 2 SYMATTR InstName R4 SYMATTR Value 22k SYMBOL res -96 -240 R0 WINDOW 0 36 45 Left 2 WINDOW 3 34 76 Left 2 SYMATTR InstName R6 SYMATTR Value 22k SYMBOL res 224 -640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 100k SYMBOL res 240 -272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 100k SYMBOL res 224 -384 R0 WINDOW 0 -53 15 Left 2 WINDOW 3 -61 47 Left 2 SYMATTR InstName R17 SYMATTR Value 100k SYMBOL cap 576 528 R0 SYMATTR InstName C8 SYMATTR Value 10µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL res 416 -32 R90 WINDOW 0 -4 61 VBottom 2 WINDOW 3 39 55 VTop 2 SYMATTR InstName R5 SYMATTR Value 680k SYMBOL res 592 -240 R0 SYMATTR InstName R10 SYMATTR Value 4.7 SYMBOL res 112 -640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R19 SYMATTR Value 22k SYMBOL res 112 -272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R20 SYMATTR Value 22k SYMBOL res 896 560 R0 SYMATTR InstName R16 SYMATTR Value 100k SYMBOL cap 896 800 R0 SYMATTR InstName C10 SYMATTR Value 100µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R" SYMBOL cap 816 800 R0 SYMATTR InstName C12 SYMATTR Value 100µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R" SYMBOL cap 720 800 R0 SYMATTR InstName C13 SYMATTR Value 100µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R" SYMBOL cap 896 272 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C9 SYMATTR Value 10µ SYMATTR SpiceLine V=16 Irms=0 Rser=0 Lser=0 mfg="Murata" pn="GRM188R61C106KAAL" type="X5R" SYMBOL res 832 272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R18 SYMATTR Value 220 SYMBOL cap 96 -464 R0 SYMATTR InstName C15 SYMATTR Value 10µ SYMATTR SpiceLine V=10 Irms=0 Rser=0.0029 Lser=748p mfg="Würth Elektronik" pn="885012208018 WCAP-CSGP 1206" type="X7R" SYMBOL cap 608 800 R0 SYMATTR InstName C11 SYMATTR Value 10µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL cap 496 800 R0 SYMATTR InstName C14 SYMATTR Value 10µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL cap 384 800 R0 SYMATTR InstName C16 SYMATTR Value 10µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL res 496 176 R0 WINDOW 0 36 27 Left 2 WINDOW 3 39 52 Left 2 SYMATTR InstName R21 SYMATTR Value 4.7 SYMBOL res 576 176 R0 WINDOW 0 38 27 Left 2 WINDOW 3 40 51 Left 2 SYMATTR InstName R22 SYMATTR Value 4.7 SYMBOL res 912 416 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R23 SYMATTR Value 100 SYMBOL cap 320 -352 R0 WINDOW 0 -27 5 Left 2 WINDOW 3 -35 47 Left 2 SYMATTR InstName C3 SYMATTR Value 22µ SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.0028 Lser=544p mfg="Würth Elektronik" pn="885012107005 WCAP-CSGP 0805" type="X5R" TEXT -584 840 Left 2 !.tran 0 300s 0s startup TEXT -400 -720 Left 2 ;Edward Rawde's high purity sinewave oscillator. 3 Nov 2024 V2