Various projects using Raspberry Pi
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86 lines
1.8 KiB

raspiHEAD headphone amplifier
*
* simulation of the analog amplifier stage after the pcm2704 dac
* Torsten Meissner, 2012
*
* NE5532 subcircuit definition
***** NE5532 Source: Texas Instruments NE5534
* C2 added to simulate compensated frequency response (Uwe Beis)
* NE5532 OPERATIONAL AMPLIFIER "MACROMODEL" SUBCIRCUIT
* CREATED USING NE5534 model from Texas InstrumentsAT 12:41
* (REV N/A) SUPPLY VOLTAGE: +/-15V
* CONNECTIONS: NON-INVERTING INPUT
* | INVERTING INPUT
* | | POSITIVE POWER SUPPLY
* | | | NEGATIVE POWER SUPPLY
* | | | | OUTPUT
* | | | | |
.SUBCKT NE5532 1 2 3 4 5
*
C1 11 12 7.703E-12
C2 6 7 23.500E-12
DC 5 53 DX
DE 54 5 DX
DLP 90 91 DX
DLN 92 90 DX
DP 4 3 DX
EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5
FB 7 99 POLY(5) VB VC VE VLP VLN 0 2.893E6 -3E6 3E6 3E6 -3E6
GA 6 0 11 12 1.382E-3
GCM 0 6 10 99 13.82E-9
IEE 10 4 DC 133.0E-6
HLIM 90 0 VLIM 1K
Q1 11 2 13 QX
Q2 12 1 14 QX
R2 6 9 100.0E3
RC1 3 11 723.3
RC2 3 12 723.3
RE1 13 10 329
RE2 14 10 329
REE 10 99 1.504E6
RO1 8 5 50
RO2 7 99 25
RP 3 4 7.757E3
VB 9 0 DC 0
VC 3 53 DC 2.700
VE 54 4 DC 2.700
VLIM 7 8 DC 0
VLP 91 0 DC 38
VLN 0 92 DC 38
.MODEL DX D(IS=800.0E-18)
.MODEL QX NPN(IS=800.0E-18 BF=132)
.ENDS
vin 1 0 pulse (0.0V 1.0V 2ms) ac 1.0 dc 0.0
vcc 3 0 DC 18
c1 1 2 100.0u
c2 6 8 1.0m
c3 4 0 100.0u
c4 7 0 100.0u
c5 3 0 100.0n
r1 2 4 100.0K
r2 5 6 10.0K
r3 3 4 10.0K
r4 5 7 10.0K
r5 4 0 10.0K
r6 8 0 16.0
XOPA 2 5 3 0 6 NE5532
.control
* dispose of any 'save' statements from previous runs
delete all
* perform an ac analysis
ac dec 10 0.1Hz 50kHz
* plot the magnitude of the voltage at node 2 vs frequency
plot db(v(8)) xlog
plot ph(v(8)) xlog
.endc
.end