Anyone have a current vintage Spice Model for an OPA277?
All I can find is a model dated in 1997, and developed using PSpice "Parts" function, which sucks the big lemon :-(
...Jim Thompson
Anyone have a current vintage Spice Model for an OPA277?
All I can find is a model dated in 1997, and developed using PSpice "Parts" function, which sucks the big lemon :-(
...Jim Thompson
-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et |
Guess you found this one, but just in case yours is older (bottom of page):
It's the usual macro model. Since TI bought BB that may very well be all there is in the public domain. I'd call them, see if they are willing to release better stuff against an NDA.
-- Regards, Joerg http://www.analogconsultants.com/
Same one I found... seems to be the only one floating around :-(
...Jim Thompson
-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et |
Well, just call them up and try to cajole them into releasing the good stuff :-)
Not that they always do it. For a TPS regulator they said no and then I consequently designed it out. Lost revenue for them. Other times I was luckier.
-- Regards, Joerg http://www.analogconsultants.com/
"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
some of the ic makers can provide spice models also.
Bob
That's the model I already have. If you look inside the zipfile you'll note that the model is dated 1997, but the worst thing about it is that the model was derived used PSpice "Parts" program, which is a notorious piece-a-crap ;-)
...Jim Thompson
-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et |
"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
Have you emailed the parts maker or looked on their site?
Bob
"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...
.subckt OPA277 + - V+ V- OUT
*c1 11 12 4.8119E-12
c2 6 7 110.00E-12
dc OUT 53 dy
de 54 OUT dy
dlp 90 91 dx
dln 92 90 dx
dp V- V+ dx
dq1 20 21 dx
dq2 22 20 dx
egnd 99 0 poly(2) (V+,0) (V-,0) 0 .5 .5
fb 7 99 poly(5) vb vc ve vlp vln 0 1.5000E9 -1E3 1E3 1E9 -1E9
fq1 V+ 0 vq1 1
fq2 0 V- vq2 1
fq3 0 20 vlim 1
ga 6 0 11 12 133.33E-6
gcm 0 6 10 99 13.333E-12
iee 10 V- dc 100.60E-6
hlim 90 0 vlim 1K
q1 11 42 13 qx1
q2 12 41 14 qx2
r2 6 9 100.00E3
rc1 V+ 11 7.5000E3
rc2 V+ 12 7.5000E3
re1 13 10 750
re2 14 10 750
ree 10 99 1.9881E6
ro1 8 OUT 50
ro2 7 99 25
rp V+ V- 42.511E3
vb 9 0 dc 0
vc V+ 53 dc 1.8124
ve 54 V- dc 1.8124
vlim 7 8 dc 0
vlp 91 0 dc 35
vln 0 92 dc 35
vq1 21 0 dc 0
vq2 0 22 dc 0
*Input Protection Circuitryr1in + 41 1K
r2in - 42 1K
din1 41 42 dx
din2 42 41 dx
.model dx D(Is=800.00E-18)
.model dy D(Is=800.00E-18 Rs=1m Cjo=10p)
.model qx1 NPN(Is=800.00E-18 Bf=100E3 Kf=250f)
.model qx2 NPN(Is=800.3094E-18 Bf=200.00E3 Kf=250f)
.ends OPA277
**version 8.0 207719823 u 113 U? 17 R? 4 V? 5 I? 2 ? 3 C? 2 PM? 2 @libraries @analysis .AC 1 3 0
+0 101 +1 10 +2 10MEG +3 V(RL:2) +4 Vin .TRAN 0 0 0 0 +0 2ns +1 200us +3 200n .STEP 1 0 4*************************************************** Explanation of files that may be included in this zip package:
.mod P-SPICE MACROMODEL FILE .sch SCHEMATIC EXAMPLE .slb SYMBOL FILE FOR P-SPICE DESIGN CENTER(R)MICROSIM CORP
Few, if any, spice opamp models are well-suited for every imaginable performance aspect. What, specifically, are you trying to model in your circuit, that TI's opa277 spice model doesn't handle properly? There may be a workaround.
Hang loose... we be talking to the same developer ;-)
...Jim Thompson
-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et |
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