Version 4
SHEET 1 1072 912
WIRE -832 -1536 -912 -1536
WIRE -672 -1536 -752 -1536
WIRE -544 -1536 -672 -1536
WIRE -448 -1536 -544 -1536
WIRE -432 -1536 -448 -1536
WIRE -2000 -1504 -2064 -1504
WIRE -1856 -1504 -2000 -1504
WIRE -672 -1504 -672 -1536
WIRE -2000 -1472 -2000 -1504
WIRE -544 -1456 -544 -1536
WIRE -912 -1424 -912 -1536
WIRE -2064 -1408 -2064 -1504
WIRE -1296 -1408 -1376 -1408
WIRE -1168 -1408 -1232 -1408
WIRE -1136 -1408 -1168 -1408
WIRE -1024 -1408 -1072 -1408
WIRE -960 -1408 -1024 -1408
WIRE -672 -1408 -672 -1440
WIRE -672 -1408 -784 -1408
WIRE -1024 -1392 -1024 -1408
WIRE -672 -1376 -672 -1408
WIRE -2000 -1360 -2000 -1392
WIRE -1920 -1360 -2000 -1360
WIRE -1792 -1360 -1920 -1360
WIRE -784 -1360 -784 -1408
WIRE -2000 -1328 -2000 -1360
WIRE -1920 -1312 -1920 -1360
WIRE -1024 -1280 -1024 -1312
WIRE -960 -1280 -960 -1360
WIRE -912 -1280 -912 -1344
WIRE -672 -1280 -672 -1296
WIRE -544 -1280 -544 -1392
WIRE -2064 -1232 -2064 -1328
WIRE -2000 -1232 -2000 -1248
WIRE -1920 -1232 -1920 -1248
WIRE -1376 -1216 -1376 -1408
WIRE -1296 -1216 -1376 -1216
WIRE -784 -1216 -784 -1296
WIRE -784 -1216 -1232 -1216
WIRE -640 -1216 -784 -1216
WIRE -448 -1216 -448 -1536
WIRE -448 -1216 -560 -1216
WIRE -1888 -1120 -1920 -1120
WIRE -1808 -1120 -1824 -1120
WIRE -1696 -1120 -1728 -1120
WIRE -1680 -1120 -1696 -1120
WIRE -1568 -1120 -1600 -1120
WIRE -1504 -1120 -1568 -1120
WIRE -1376 -1120 -1376 -1216
WIRE -1376 -1120 -1424 -1120
WIRE -1312 -1120 -1376 -1120
WIRE -1168 -1120 -1168 -1408
WIRE -1168 -1120 -1232 -1120
WIRE -1136 -1120 -1168 -1120
WIRE -832 -1120 -912 -1120
WIRE -672 -1120 -752 -1120
WIRE -544 -1120 -672 -1120
WIRE -448 -1120 -544 -1120
WIRE -432 -1120 -448 -1120
WIRE -672 -1072 -672 -1120
WIRE -912 -1024 -912 -1120
WIRE -544 -1024 -544 -1120
WIRE -1632 -1008 -1632 -1024
WIRE -960 -1008 -1024 -1008
WIRE -1696 -992 -1696 -1120
WIRE -1664 -992 -1696 -992
WIRE -1568 -976 -1568 -1120
WIRE -1568 -976 -1600 -976
WIRE -1376 -976 -1376 -1120
WIRE -1280 -976 -1376 -976
WIRE -1968 -960 -1984 -960
WIRE -1888 -960 -1968 -960
WIRE -1792 -960 -1824 -960
WIRE -1760 -960 -1792 -960
WIRE -1664 -960 -1680 -960
WIRE -1168 -960 -1168 -1120
WIRE -1168 -960 -1216 -960
WIRE -1136 -960 -1168 -960
WIRE -1024 -960 -1072 -960
WIRE -960 -960 -1024 -960
WIRE -672 -960 -672 -1008
WIRE -672 -960 -784 -960
WIRE -1968 -944 -1968 -960
WIRE -1280 -944 -1376 -944
WIRE -1024 -944 -1024 -960
WIRE -1632 -928 -1632 -944
WIRE -672 -928 -672 -960
WIRE -1792 -912 -1792 -960
WIRE -784 -896 -784 -960
WIRE -1968 -864 -1968 -880
WIRE -1376 -848 -1376 -944
WIRE -1312 -848 -1376 -848
WIRE -1168 -848 -1248 -848
WIRE -1968 -832 -1968 -864
WIRE -1024 -832 -1024 -864
WIRE -912 -832 -912 -944
WIRE -544 -832 -544 -960
WIRE -672 -800 -672 -848
WIRE -1792 -768 -1792 -832
WIRE -1792 -768 -2016 -768
WIRE -1504 -768 -1792 -768
WIRE -1376 -768 -1376 -848
WIRE -1376 -768 -1424 -768
WIRE -1312 -768 -1376 -768
WIRE -784 -768 -784 -832
WIRE -784 -768 -1248 -768
WIRE -640 -768 -784 -768
WIRE -448 -768 -448 -1120
WIRE -448 -768 -560 -768
FLAG -432 -1536 speaker_a
IOPIN -432 -1536 Out
FLAG -1248 -928 0
FLAG -2064 -1232 0
FLAG -912 -1280 0
FLAG -960 -1280 0
FLAG -672 -1280 0
FLAG -1856 -1504 VCC
IOPIN -1856 -1504 BiDir
FLAG -1248 -992 VCC
IOPIN -1248 -992 BiDir
FLAG -544 -1280 0
FLAG -1632 -928 0
FLAG -1632 -1024 VCC
IOPIN -1632 -1024 BiDir
FLAG -1792 -1360 ref
IOPIN -1792 -1360 BiDir
FLAG -1920 -1120 0
FLAG -1984 -960 afe_in
IOPIN -1984 -960 In
FLAG -1024 -1280 0
FLAG -1968 -832 0
FLAG -2000 -1232 0
FLAG -1920 -1232 0
FLAG -1136 -1120 afe_out
IOPIN -1136 -1120 Out
FLAG -432 -1120 speaker_b
IOPIN -432 -1120 Out
FLAG -912 -832 0
FLAG -672 -800 0
FLAG -544 -832 0
FLAG -1024 -832 0
FLAG -1024 -1008 0
FLAG -2016 -768 ref
IOPIN -2016 -768 BiDir
FLAG -1168 -848 0
SYMBOL voltage -1968 -960 R0
WINDOW 0 64 24 Right 2
WINDOW 3 126 108 Right 2
WINDOW 123 92 69 Right 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(-.5 .5 0 1u 1u 499u 1m)
SYMATTR Value2 AC 1
SYMBOL res -1520 -1136 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 4k7
SYMBOL cap -1296 -1424 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value {C_1}
SYMBOL UniversalOpamp2 -1248 -960 R0
SYMATTR InstName U1
SYMATTR Value2 Avol=1Meg GBW={GBW} Slew=10Meg
SYMBOL voltage -2064 -1424 R0
WINDOW 0 -43 59 Right 2
WINDOW 3 37 93 Right 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL e -912 -1440 R0
WINDOW 0 12 4 Left 2
WINDOW 3 -43 141 Left 2
SYMATTR InstName E1
SYMATTR Value {PlantGain}
SYMBOL ind -848 -1520 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=20m
SYMBOL cap -688 -1504 R0
SYMATTR InstName C4
SYMATTR Value 680n
SYMBOL res -544 -1232 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 20k
SYMBOL res -688 -1392 R0
SYMATTR InstName R2
SYMATTR Value {R_snub}
SYMBOL cap -560 -1456 R0
SYMATTR InstName C2
SYMATTR Value 680n
SYMBOL UniversalOpamp2 -1632 -976 R0
SYMATTR InstName U2
SYMATTR Value2 Avol=1Meg GBW={GBW} Slew=1000Meg
SYMBOL res -1696 -1136 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 12k
SYMBOL res -1824 -1136 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 3k3
SYMBOL cap -1888 -1136 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10µ
SYMBOL res -1808 -928 R0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res -1664 -976 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 1k0
SYMBOL cap -1824 -976 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 220n
SYMBOL res -1040 -1408 R0
SYMATTR InstName R8
SYMATTR Value 50k
SYMBOL cap -1072 -1424 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 47n
SYMBOL cap -1296 -1200 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C7
SYMATTR Value 2µ2
SYMBOL res -2016 -1488 R0
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res -2016 -1344 R0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL cap -1936 -1312 R0
SYMATTR InstName C8
SYMATTR Value 100µ
SYMBOL res -1328 -1104 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 100k
SYMBOL cap -800 -1360 R0
SYMATTR InstName C9
SYMATTR Value {C_lead}
SYMBOL e -912 -1040 R0
WINDOW 0 12 4 Left 2
WINDOW 3 -43 141 Left 2
SYMATTR InstName E2
SYMATTR Value {PlantGain}
SYMBOL ind -848 -1104 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=20m
SYMBOL cap -688 -1072 R0
SYMATTR InstName C10
SYMATTR Value 680n
SYMBOL res -544 -784 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 20k
SYMBOL cap -560 -1024 R0
SYMATTR InstName C11
SYMATTR Value 680n
SYMBOL res -1040 -960 R0
SYMATTR InstName R14
SYMATTR Value 50k
SYMBOL cap -1072 -976 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C12
SYMATTR Value 47n
SYMBOL res -1520 -752 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R15
SYMATTR Value 4k7
SYMBOL cap -1312 -752 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C15
SYMATTR Value 2µ2
SYMBOL cap -1312 -864 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C14
SYMATTR Value {C_1}
SYMBOL res -688 -944 R0
SYMATTR InstName R13
SYMATTR Value {R_snub}
SYMBOL cap -800 -896 R0
SYMATTR InstName C13
SYMATTR Value {C_lead}
TEXT -1696 -1344 Left 2 !;ac dec 100 20 20k
TEXT -1696 -1424 Left 2 !.param PlantGain 10
TEXT -1848 -696 Left 3 ;Class-D BTL Amp with differential Postfilter-Feedback Compensator Type I
TEXT -1696 -1448 Left 2 !.param GBW 10Meg
TEXT -1696 -1320 Left 2 !.tran 0 1002m 1 startup
TEXT -1696 -1400 Left 2 !.param C_1 10n
TEXT -1696 -1376 Left 2 !.param R_snub 2R5
TEXT -1696 -1472 Left 2 !.param C_lead 1n0
TEXT -1232 -1504 Left 2 ;OPA=OPA2134