There are two kinds of symbols in LTspice, it's own uncooperative, and component specific. You can rename the component specific one and edit the model name within it - it is a text file after all. The important detail is contained in this line of a model:
.Subckt NJM4558 OUT1 -IN1 +IN1 V- +IN2 -IN2 OUT2 V+
If you commit yourself to learn how to make your own symbols, you'll find some tutorials on the net. I'm the lazy one - I tend to adopt the existing ones to my needs by editing , if necessary. In this particular case you have a model of a dual op amp, and a solution is using a pinout chip-like symbol.
This one works, just copy it to text editor and name it NJM4558.asc
Version 4
SymbolType CELL
RECTANGLE Normal -112 -128 112 128
WINDOW 0 0 -144 Center 0
WINDOW 3 0 144 Center 0
SYMATTR Value NJM4558
SYMATTR Prefix X
PIN -112 -96 LEFT 8
PINATTR PinName out
PINATTR SpiceOrder 1
PIN -112 -32 LEFT 8
PINATTR PinName -in
PINATTR SpiceOrder 2
PIN -112 32 LEFT 8
PINATTR PinName +in
PINATTR SpiceOrder 3
PIN -112 96 LEFT 8
PINATTR PinName VSS
PINATTR SpiceOrder 4
PIN 112 96 RIGHT 8
PINATTR PinName in+
PINATTR SpiceOrder 5
PIN 112 32 RIGHT 8
PINATTR PinName in-
PINATTR SpiceOrder 6
PIN 112 -32 RIGHT 8
PINATTR PinName out
PINATTR SpiceOrder 7
PIN 112 -96 RIGHT 8
PINATTR PinName VDD
PINATTR SpiceOrder 8
I recycled a wien bridge oscillator to show you how it works. This one is also for mikebg and his fascination with PID regulators in oscillator circuits - it acquires stability ... eventually, but only illusory stability - it will re-flutter once faced with any quick load change. Oscillator's envelope behaves as an integrator with constant slew rate, hence oscillation.
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Get yourself a copy of Paul Tuinenga's SPICE book "A Guide to Circuit Simulation & Analysis Using PSpice", ISBN 0-13-158775-7Originally posted by Derx View Post
http://www.amazon.co.uk/Spice-Circui...2828642&sr=8-2Leave a comment:
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I take a lot of models from manufacturers directly so I need to learn how to convert these models so that they work properly.
I'm interested to know what do the letter abbreviations in the parametersLeave a comment:
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It should work as is, provided you have a LTspice symbol that fits with the .Subckt pinout statement.
You'll find MC4558 model and symbol ready for LTspice at yahoo group instead.Leave a comment:
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How to convert ORCAD PSpice Macromodel to LTSpice macromodel?
need tools
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*$
* PART NUMBER:NJM4558
* MANUFACTURER: NEW JAPAN RADIO
* All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
.Subckt NJM4558 OUT1 -IN1 +IN1 V- +IN2 -IN2 OUT2 V+
X_U1 +IN1 -IN1 V+ V- OUT1 NJM4558_SUB
X_U2 +IN2 -IN2 V+ V- OUT2 NJM4558_SUB
.ends NJM4558
*$
.subckt NJM4558_SUB 1 2 3 4 5
c1 11 12 7.7942E-12
c2 6 7 27.000E-12
dc 5 53 dy
de 54 5 dy
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 7.0736E6 -1E3 1E3 7E6 -7E6
ga 6 0 11 12 575.49E-6
gcm 0 6 10 99 18.198E-9
iee 3 10 dc 30.051E-6
hlim 90 0 vlim 1K
q1 11 2 13 qx1
q2 12 1 14 qx2
r2 6 9 100.00E3
rc1 4 11 1.7684E3
rc2 4 12 1.7684E3
re1 13 10 44.035
re2 14 10 44.035
ree 10 99 6.6553E6
ro1 8 5 50
ro2 7 99 25
rp 3 4 1.8032E3
vb 9 0 dc 0
vc 3 53 dc 1.7979
ve 54 4 dc 1.7979
vlim 7 8 dc 0
vlp 91 0 dc 2.9500
vln 0 92 dc 2.9500
.model dx D(Is=800.00E-1
.model dy D(Is=800.00E-18 Rs=1m Cjo=10p)
.model qx1 PNP(Is=800.00E-18 Bf=519.03)
.model qx2 PNP(Is=1.008900E-15 Bf=666.67)
.ends
*$Leave a comment:
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For generic HCMOS gate oscillators, check this reference:
http://www.fairchildsemi.com/an/AN/AN-340.pdfLeave a comment:
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You can use a 4069 model for the missing inverter. It has symmetrical fets unlike 4049s and it should mimic the operation of 4060 better.Leave a comment:
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Model CD4020 already exists, this 14-stage counter, but without oscillator generator block
How to make CD4060 from CD4020? or from CD4040?Leave a comment:
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Nope, too many flipflops. You can make it using basic building blocks and connect as many flipflops you actually need.Leave a comment:
Leave a comment: