CA3240AEZ Equivalent & Substitute Parts

Part Overview

The CA3240AEZ is a general-purpose operational amplifier manufactured by Renesas Electronics Corporation, configured as a dual-circuit 8-PDIP through-hole package. This device is classified as Active product status and is ROHS3 compliant. The CA3240AEZ serves applications requiring dual operational amplifier functionality with moderate bandwidth and supply voltage flexibility across industrial and consumer electronics.

Substitute parts become necessary when the CA3240AEZ reaches end-of-life inventory constraints, when alternative sourcing is required for supply chain resilience, or when design specifications permit operation within the electrical and mechanical parameters of equivalent devices. All substitute parts listed maintain the same 8-DIP package form factor and dual-circuit configuration.

Key Parameters

Parameter	CA3240AEZ Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Slew Rate	9	V/µs
Gain Bandwidth Product	4.5	MHz
Current - Input Bias	10	pA
Voltage - Input Offset	2	mV
Current - Supply	8 (x2 Channels)	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitute parts for the CA3240AEZ are selected based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following parameters:

Mandatory Compatibility Parameters:

Package form factor: 8-DIP (0.300", 7.62mm) through-hole mounting
Number of circuits: 2 operational amplifiers per package
Supply voltage range: Must encompass or overlap the CA3240AEZ range of 4V to 36V minimum and maximum
Operating temperature range: Must support -40°C to 85°C or a subset thereof
Output current capability: Minimum 40 mA per channel
RoHS compliance: ROHS3 compliant preferred for regulatory alignment

Electrical Performance Parameters:

Slew rate, gain bandwidth product, input bias current, and input offset voltage determine performance characteristics but do not restrict substitution eligibility
Amplifier type (General Purpose vs. J-FET) affects input impedance and noise characteristics but does not prevent functional substitution when application requirements permit

Substitute parts are grouped into two categories: General Purpose amplifiers (AS358P-E1, LM258P, NJM4556AD, OP213FPZ, RC4558IP, RC4558P, RC4559P) and J-FET amplifiers (AD712KNZ, TL072ACP, TL082ACP). General Purpose substitutes maintain identical amplifier topology. J-FET substitutes offer superior input impedance characteristics and lower input bias current but require verification of supply voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (mV/µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
CA3240AEZ	Renesas	General Purpose	9	4.5	10 pA	2 mV	8	40	4	36	-40 to 85	Active
AD712KNZ	Analog Devices	J-FET	20	4	25 pA	300 µV	5	25	9	36	0 to 70	Active
AS358P-E1	Diodes Inc.	General Purpose	—	—	20 nA	2 mV	0.7	40	3	36	-40 to 85	Active
LM258P	Texas Instruments	General Purpose	0.3	0.7	20 nA	3 mV	0.5	40	3	32	-25 to 85	Active
NJM4556AD	Nisshinbo Micro	General Purpose	3	8	50 nA	500 µV	8	70	4	36	-40 to 85	Not For New Designs
OP213FPZ	Analog Devices	General Purpose	1.2	3.4	600 nA	250 µV	—	40	4	36	-40 to 85	Active
RC4558IP	Texas Instruments	General Purpose	1.7	3	150 nA	500 µV	2.5	10	10	30	-40 to 85	Active
RC4558P	Texas Instruments	General Purpose	1.7	3	150 nA	500 µV	2.5	10	10	30	0 to 70	Active
RC4559P	Texas Instruments	General Purpose	2	4	40 nA	2 mV	3.3	10	10	30	0 to 70	Active
TL072ACP	Texas Instruments	J-FET	13	5.25	65 pA	3 mV	1.4	—	10	30	0 to 70	Active
TL082ACP	Texas Instruments	J-FET	13	3	30 pA	3 mV	1.4	10	10	30	0 to 70	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

AS358P-E1 and OP213FPZ are the primary substitutes for the CA3240AEZ. Both devices maintain General Purpose amplifier topology, support the full -40°C to 85°C operating temperature range, and are classified as Active product status. AS358P-E1 offers superior supply current efficiency (0.7 mA vs. 8 mA) while maintaining identical output current capability and input offset voltage. OP213FPZ provides rail-to-rail output capability and maintains the 4V to 36V supply range. Both are ROHS3 compliant.

Secondary Substitutes (Conditional Compatibility):

RC4558IP and RC4559P are suitable substitutes when supply voltage requirements do not exceed 30V maximum. RC4558IP maintains the -40°C to 85°C temperature range and is ROHS3 compliant. RC4559P operates within 0°C to 70°C temperature range. Both devices exhibit reduced output current capability (10 mA vs. 40 mA) and require verification against application current demands.

LM258P is suitable for applications with supply voltages not exceeding 32V and operating temperatures within -25°C to 85°C. This device offers the lowest supply current consumption (0.5 mA) and is ROHS3 compliant.

J-FET Substitutes (Specialized Applications):

AD712KNZ, TL072ACP, and TL082ACP are J-FET amplifiers suitable when input impedance and input bias current characteristics are critical design parameters. These devices require minimum supply voltages of 9V to 10V and maximum operating temperatures of 0°C to 70°C. AD712KNZ is the only J-FET option supporting the full -40°C to 85°C range, though with reduced maximum temperature to 70°C. All J-FET substitutes are ROHS3 compliant and Active product status.

Not Recommended:

NJM4556AD is classified as "Not For New Designs" and should not be selected for new applications despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CA3240AEZ be directly replaced with AS358P-E1 without circuit modifications?

A: AS358P-E1 is a direct pin-compatible substitute in 8-DIP package configuration. Both devices are dual general-purpose operational amplifiers with identical pinout. Electrical parameters including input offset voltage (2 mV), output current capability (40 mA), and supply voltage range (3V to 36V for AS358P-E1, 4V to 36V for CA3240AEZ) are compatible. Verification of circuit performance is required when supply voltage is between 3V and 4V, as AS358P-E1 supports lower minimum supply voltage than CA3240AEZ.

Q: What is the primary difference between General Purpose and J-FET amplifier substitutes?

A: General Purpose amplifiers (AS358P-E1, LM258P, OP213FPZ, RC4558 series, RC4559P) use bipolar input stages and are suitable for general signal conditioning, filtering, and amplification applications. J-FET amplifiers (AD712KNZ, TL072ACP, TL082ACP) use field-effect transistor input stages, providing significantly lower input bias current (25 pA to 65 pA vs. 10 nA to 600 nA) and higher input impedance. J-FET substitutes are preferred for high-impedance signal sources and precision measurement applications. Both types maintain identical 8-DIP package form factor and dual-circuit configuration.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant except RC4558IP and RC4558P, which have "Not Applicable" MSL designation. All parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.33.0001.

Q: What supply voltage limitations apply to substitute selection?

A: The CA3240AEZ supports 4V to 36V supply range. Substitute parts with restricted supply ranges include: LM258P (3V to 32V), RC4558IP and RC4558P (10V to 30V), RC4559P (10V to 30V), TL072ACP (10V to 30V), and TL082ACP (10V to 30V). Designs operating at supply voltages below 10V must use AS358P-E1, OP213FPZ, or AD712KNZ. Designs operating above 32V must use AS358P-E1, OP213FPZ, or AD712KNZ.

Q: What operating temperature range limitations apply?

A: The CA3240AEZ operates across -40°C to 85°C. Substitute parts with restricted temperature ranges include: AD712KNZ (0°C to 70°C), LM258P (-25°C to 85°C), RC4558P (0°C to 70°C), RC4559P (0°C to 70°C), TL072ACP (0°C to 70°C), and TL082ACP (0°C to 70°C). Applications requiring full -40°C to 85°C operation must use AS358P-E1, OP213FPZ, RC4558IP, or NJM4556AD.

Q: Can RC4558 series devices substitute for CA3240AEZ in all applications?

A: RC4558IP and RC4558P are functionally compatible but have restricted supply voltage range (10V to 30V minimum and maximum) compared to CA3240AEZ (4V to 36V). Output current capability is also reduced (10 mA vs. 40 mA per channel). These devices are suitable only for applications operating within 10V to 30V supply range and requiring maximum 10 mA output current per channel.

Q: What is the significance of "Not For New Designs" product status for NJM4556AD?

A: NJM4556AD is electrically compatible with CA3240AEZ but is designated "Not For New Designs" by the manufacturer. This classification indicates the device is in mature or declining production phase. While existing designs may continue using this part, new circuit designs should select from Active status alternatives such as AS358P-E1, OP213FPZ, or RC4558IP.

Q: How does slew rate affect substitute selection?

A: Slew rate determines the maximum rate of output voltage change and affects performance in high-frequency or high-speed applications. The CA3240AEZ has 9V/µs slew rate. Substitutes with lower slew rates (LM258P at 0.3V/µs, OP213FPZ at 1.2V/µs, RC4558 series at 1.7V/µs) may limit bandwidth performance. Substitutes with higher slew rates (AD712KNZ at 20V/µs, TL072ACP and TL082ACP at 13V/µs) provide enhanced high-frequency performance. Slew rate selection depends on application bandwidth requirements.

Q: Is pin-to-pin compatibility guaranteed for all 8-DIP substitutes?

A: All substitute parts maintain 8-DIP (0.300", 7.62mm) through-hole package configuration with identical pinout for dual operational amplifier circuits. Pin-to-pin compatibility is guaranteed for all listed substitutes. Physical board layout and PCB footprints designed for CA3240AEZ accept all substitute parts without modification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message