Lart? может и с 3886 поможешь?
Я нашел кое что, но не знаю, что с ним делать.
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http://www.klyachin.ru/forum/printpage.php?forum=1&topic=8582. Audiomaniac - 14 Сентября, 2005 - 13:09:24
sanmigel
На diyaudio.com кто-то делал - но она видимо с ошибкой.
Посмотри, может разберешься, было бы интересно:
* LM3886 OPAMP MACRO MODEL (INTERMEDIATE LEVEL)
*
* IN+ IN- OUT VCC VEE
.SUBCKT LM3886 1 2 81 101 102
Q1 5 1 7 NPN
Q2 6 2 8 NPN
RC1 101 5 377.99
RC2 101 6 377.99
RE1 7 4 357.99
RE2 8 4 357.99
I1 4 102 0.001
*
* OPEN-LOOP GAIN, FIRST POLE AND SLEW RATE
G1 100 10 6 5 0.002645552
RP1 10 100 37.8MEG
CP1 10 100 0.0000526316UF
*
*OUTPUT STAGE
EOUT 80 100 10 100 1
RO 80 81 100
*
* INTERNAL REFERENCE
RREF1 101 103 100K
RREF2 103 102 100K
EREF 100 0 103 0 1
R100 100 0 1MEG
*
.model NPN NPN(BF=50000)
*
.ENDS LM3886
*
3. Alex Torres - 14 Сентября, 2005 - 13:59:35
Эта модель для LTSpice, с PSpice/Orcad/MC она не работает, нужно править.
4. Audiomaniac - 14 Сентября, 2005 - 14:09:23
Alex Torres
Ну она как бы работает в МС, но результаты получаются явно некорректные....
А что там нужно править?
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http://www.diyaudio.com/forums/showthread/t-98543.htmlThanks rumors. Is there a reason why your schematic does not follow the equivalent schematic of the datasheet? Anyway, I was always wondering what values those constant current sources would approximately have and your schematic allowed me to complete my SPICE model for SwitcherCAD III (LTspice). Note: This model does not follow schematic presented by rumors but the schematic presented by the datasheet.
The quick test shows that this model at least gives pretty decent results. Note that protection schemes are not modelled here. Seems like the next step is to dwelve into reading the AN-898...
.SUBCKT LM3886 posin negin out posrail negrail mute
* IN+ IN- OUT VCC VEE MUTE
*
Q1 posrail posin N004 0 NPN
I1 N004 negrail 0.25m
Q2 posrail negin N003 0 NPN
I2 N003 negrail 0.25m
Q3 N011 N003 N010 0 PNP
Q4 N011 N018 N012 0 NPN
R1 N012 negrail 2.2k
I3 N018 negrail 0.1m
Q5 N017 N018 N024 0 NPN
R2 N024 negrail 2.2k
Q6 posrail N011 N018 0 NPN
R3 N009 N010 1.1k
R4 N009 N023 1.1k
Q7 N017 N004 N023 0 PNP
Q8 N017 N013 N016 0 PNP
Q9 N011 N025 N019 0 PNP
R5 N015 N016 4.7k
R6 N015 N019 4.7k
R7 N013 gndpin 10k
D1 N025 gndpin D
D2 gndpin N025 D
R8 out N025 10k
C1 out N017 10p
I4 N026 negrail 1m
Q10 posrail N017 N026 0 NPN
Q11 N030 N026 N031 0 NPN
R9 N031 negrail 800
Q12 N009 N008 N014 0 PNP
Q13 N015 N022 N014 0 PNP
I5 posrail N014 1m
I6 N022 negrail 1m
D3 N021 N022 D
D4 N020 N021 D
R10 posrail N020 1k
D5 N007 N008 D
D6 N006 N007 D
R11 posrail N006 1k
Q14 N008 gndpin N005 0 NPN
R12 N005 N001 1k
D7 N002 mute D
D8 N001 N002 D
D9 N032 N031 D
R13 N034 negrail 150
Q15 out N032 N034 0 NPN
Q16 out N034 N036 0 NPN
R14 N036 negrail 0.45
Q17 N032 N030 out 0 PNP
D10 N029 N030 D
D11 N028 N029 D
D12 N027 N028 D
R15 N033 out 150
Q18 posrail N027 N033 0 NPN
Q19 posrail N033 N035 0 NPN
R16 N035 out 0.45
I7 posrail N027 2.5m
.model D D
.model NPN NPN
.model PNP PNP
.end lm3886
С уважением Взводатор.