Alternative Part to the op amp CA3140e

APaddy · 11th January 2006, 11:27 PM

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 · 14th January 2006, 11:16 AM

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/devicein...,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 · 14th January 2006, 11:23 AM

Did you ask dear old uncle Google?

He found this for you:
http://www.electronics-forum.info/ca...140_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 · 14th January 2006, 11:20 PM

thanks guys for your help

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

11th January 2006, 11:27 PM	#1
APaddy diyAudio Member Join Date: Jan 2006 Location: London	Alternative Part to the op amp CA3140e 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

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14th January 2006, 11:16 AM	#2
mctylr diyAudio Member Join Date: Nov 2005	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/devicein...,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".

14th January 2006, 11:23 AM	#3
Christer diyAudio Member Join Date: Sep 2002 Location: Sweden	Did you ask dear old uncle Google? He found this for you: http://www.electronics-forum.info/ca...140_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"

14th January 2006, 11:20 PM	#4
APaddy diyAudio Member Join Date: Jan 2006 Location: London	thanks guys for your help but ive tried finding the part in p_spice and still it doesnt come up with anything?????

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