Alternative Part to the op amp CA3140e

[APaddy]

HI guys

wondering if you can help!!

Does any one know an equivilent part to the op amp CA3140e..

IM using it as a DC amplifier in my project - im building a dynamic noise limiter.....

does any one know an alternative part with the same characteristics as the CA3140e?

im doing a simulation on P spice and the op amp CA3140a is not listed and its driving me nuts!!!

thanks guys

alex

 

[mctylr]

I assume you found the CA3140 (8pin DIP is CA3140E order code) datasheet from Intersil for this 4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output.

http://www.intersil.com/cda/deviceinfo/0,0,CA3140,0.html

Sorry, I don't know of any cross-referenced Op-Amps that have a simulation model available. Intersil didn't have a model available for it under their "Design Assistance" / "Design Models".

 

[Christer]

Did you ask dear old uncle Google? 😉

He found this for you:
http://www.electronics-forum.info/cad/Need_SPICE_model_for_CA3140_45269.html

Do verify it has reasonable behaviour for those parameters that are important to you.

I'd better paste in the model itself here, so it's safely archived on our forum. 🙂


*$ model description: "awbca3140"
*a Device model created by analog_uprev for ca3140 on Thu Mar 1
18:48:14 IST 2001


.subckt awbca3140 1 36 15 20 12
*START OF DECK
* +IN -IN OUT +VSS -VSS
*NODE: 1 36 15 20 12
*------INPUT STAGE-------
VOSBAL 7 29 3.00000000E-03
EU1 8 1 20 12 0.0001
EU2 8 7 5 12 -1
RB1 12 10 1 TC= 1.991040E-03 (-1.244400E-04)
IB4 10 12 1.000000E-06
RB3 12 5 8743.17 TC= 1.60000000E-03 (0.00000000E+00)
IB3 12 5 5.718750E-07
G1 12 1 10 12 1.025000E-05
G2 12 36 10 12 9.750000E-06
RDM 36 29 1.500000E+12
RCM 31 13 1.500000E+12
CDM 36 29 4.000000E-12
G5 31 13 36 31 6.66667E-13
G6 31 13 1 31 6.66667E-13
*------INTERMEDIATE STAGE-------
GDM 31 16 29 36 1
GCM 31 16 13 31 -1.58113883E-05
R1 31 16 3.16358380E+02
C1 31 16 6.45457E-11
VCP 23 31 100
VCM 24 31 -100
DD1 16 23 MD2
.MODEL MD2 D XTI=1.000000P
* SPECTRE: + IMAX=1000
DD2 24 16 MD2
G3 31 6 16 31 -1.07249255E-06
R2 31 6 100000
C2 11 6 1.2E-11
RP1 31 20 3750
RP2 31 12 3750
*------OUTPUT STAGE-------
G4 31 11 6 31 -5.10867719E+01
ROUT 31 11 60
DD3 11 9 MD3
.MODEL MD3 D IS=10.0F XTI=1.0P N= 3.612647E-01
* SPECTRE: + IMAX=1000
DD4 9 11 MD4
.MODEL MD4 D IS=10.0F XTI=1.0P N= 8.028126E-01
* SPECTRE: + IMAX=1000
EU6 9 31 2 31 1
RO1 11 26 20
FF1 31 28 VFF1 1
VFF1 26 2 0.0
FF2 31 20 VFF2 -1
VFF2 33 31 0.0
FF3 12 31 VFF3 -1
VFF3 31 27 0.0
DD8 27 28 MID
DD7 28 33 MID
.MODEL MID D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
VP 20 22 -29.2613
VM 21 12 -29.3113
DD5 25 22 MID
DD6 21 17 MID
VP1 20 30 2.7501
VM1 32 12 .859456
DD9 2 30 MD9
DD10 32 15 MD9
.MODEL MD9 D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
HH1 25 2 POLY(2) VIC2 VIC1 0 1960 0 1540 0 0 0 0 0 0
HH2 2 17 POLY(2) VIC3 VIC1 0 -1960 0 -1540 0 0 0 0 0 0
VIC1 37 3 0.0
VIC2 2 14 0.0
VIC3 14 15 0.0
VPP 37 0 1
RPP 3 0 100.0K
RO3 15 20 200.0MEG
RO2 15 12 200.0MEG
.ends
*$ end model description: "awbca3140"
*
*
*$ model description: "awbca3140a"
*a Device model created by analog_uprev for ca3140a on Thu Mar 1
18:48:14 IST 2001


.subckt awbca3140a 1 36 15 20 12
*START OF DECK
* +IN -IN OUT +VSS -VSS
*NODE: 1 36 15 20 12
*------INPUT STAGE-------
VOSBAL 7 29 3.00000000E-03
EU1 8 1 20 12 0.0001
EU2 8 7 5 12 -1
RB1 12 10 1 TC= 1.991040E-03 (-1.244400E-04)
IB4 10 12 1.000000E-06
RB3 12 5 8743.17 TC= 3.00000000E-03 (0.00000000E+00)
IB3 12 5 2.287500E-07
G1 12 1 10 12 1.025000E-05
G2 12 36 10 12 9.750000E-06
RDM 36 29 1.500000E+12
RCM 31 13 1.500000E+12
CDM 36 29 4.000000E-12
G5 31 13 36 31 6.66667E-13
G6 31 13 1 31 6.66667E-13
*------INTERMEDIATE STAGE-------
GDM 31 16 29 36 1
GCM 31 16 13 31 -1.58113883E-05
R1 31 16 3.16358380E+02
C1 31 16 6.45457E-11
VCP 23 31 100
VCM 24 31 -100
DD1 16 23 MD2
.MODEL MD2 D XTI=1.000000P
* SPECTRE: + IMAX=1000
DD2 24 16 MD2
G3 31 6 16 31 -1.07249255E-06
R2 31 6 100000
C2 11 6 1.2E-11
RP1 31 20 3750
RP2 31 12 3750
*------OUTPUT STAGE-------
G4 31 11 6 31 -5.10867719E+01
ROUT 31 11 60
DD3 11 9 MD3
.MODEL MD3 D IS=10.0F XTI=1.0P N= 3.612647E-01
* SPECTRE: + IMAX=1000
DD4 9 11 MD4
.MODEL MD4 D IS=10.0F XTI=1.0P N= 8.028126E-01
* SPECTRE: + IMAX=1000
EU6 9 31 2 31 1
RO1 11 26 20
FF1 31 28 VFF1 1
VFF1 26 2 0.0
FF2 31 20 VFF2 -1
VFF2 33 31 0.0
FF3 12 31 VFF3 -1
VFF3 31 27 0.0
DD8 27 28 MID
DD7 28 33 MID
.MODEL MID D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
VP 20 22 -29.2613
VM 21 12 -29.3113
DD5 25 22 MID
DD6 21 17 MID
VP1 20 30 2.7501
VM1 32 12 .859456
DD9 2 30 MD9
DD10 32 15 MD9
.MODEL MD9 D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
HH1 25 2 POLY(2) VIC2 VIC1 0 1960 0 1540 0 0 0 0 0 0
HH2 2 17 POLY(2) VIC3 VIC1 0 -1960 0 -1540 0 0 0 0 0 0
VIC1 37 3 0.0
VIC2 2 14 0.0
VIC3 14 15 0.0
VPP 37 0 1
RPP 3 0 100.0K
RO3 15 20 200.0MEG
RO2 15 12 200.0MEG
.ends
*$ end model description: "awbca3140a"

 

[APaddy]

thanks guys for your help

but ive tried finding the part in p_spice and still it doesnt come up with anything?????