LMV342MA CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The LMV342MA is a dual-channel CMOS operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and operates across a 2.7 V to 5.5 V supply voltage range, making it suitable for low-power analog signal conditioning applications.

The LMV342MA is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	1	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	0.02	pA
Voltage - Input Offset	700	µV
Current - Supply (x2 Channels)	107	µA
Current - Output / Channel	113	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—

Substitute Part Grouping Explanation

Substitution of the LMV342MA is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Amplifier Type: CMOS
Number of Circuits: 2 (dual-channel)
Output Type: Rail-to-Rail
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply Span: 2.7 V minimum to 5.5 V maximum
Operating Temperature: -40°C to 125°C minimum

Performance Parameters (Functional Equivalence):

Slew Rate: 1 V/µs
Gain Bandwidth Product: 1 MHz
Current - Input Bias: 0.02 pA
Voltage - Input Offset: 700 µV
Current - Supply: 107 µA (x2 Channels)
Current - Output / Channel: 113 mA

Substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalents Parts that match all mandatory criteria and maintain identical or near-identical performance specifications. These parts provide pin-for-pin and functional compatibility with minimal or no circuit redesign.

Category 2: Performance-Enhanced Alternatives Parts that meet all mandatory compatibility criteria but offer enhanced performance characteristics (higher slew rate, higher gain bandwidth product, improved offset voltage). These parts are suitable for applications where the original specifications are met or exceeded, provided that the enhanced performance does not introduce stability or noise concerns in the target circuit.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Product Status
LMV342MA	Texas Instruments	CMOS	1	1	0.02	700	107	113	-40 to 125	Obsolete
LMV342MA/NOPB	National Semiconductor	CMOS	1	1	0.02	700	107	113	-40 to 125	Active
AD8542ARZ	Analog Devices Inc.	General Purpose	0.92	1	4	1000	45	30	-40 to 125	Active
ADA4891-2ARZ	Analog Devices Inc.	CMOS	210	105	2	2500	4400	125	-40 to 125	Active
ADA4891-2ARZ-R7	Analog Devices Inc.	CMOS	210	105	2	2500	4400	125	-40 to 125	Active
ADA4891-2ARZ-RL	Analog Devices Inc.	CMOS	210	105	2	2500	4400	125	-40 to 125	Active
AZV358MTR-G1	Diodes Incorporated	General Purpose	1	1	15000	1700	210	60	-40 to 85	Active
BU7266F-E2	Rohm Semiconductor	CMOS	0.0024	0.004	1	1000	0.7	4	-40 to 85	Active
BU7266SF-E2	Rohm Semiconductor	CMOS	0.0024	0.004	1	1000	0.7	4	-40 to 105	Active
BU7486F-E2	Rohm Semiconductor	CMOS	10	10	1	1000	6000	12	-40 to 105	Active
ISL28213FBZ-T13	Renesas Electronics Corporation	General Purpose	1	2	3	500	90	22	-40 to 125	Active

Engineering Selection Recommendations

Direct Replacement (Category 1):

LMV342MA/NOPB is the primary direct equivalent. This part maintains identical electrical specifications to the LMV342MA and is classified as Active product status. It is suitable for direct substitution in existing designs without circuit modification. The part is available in Bulk packaging and carries the same 8-SOIC package specification.

Performance-Enhanced Alternatives (Category 2):

ADA4891-2ARZ, ADA4891-2ARZ-R7, and ADA4891-2ARZ-RL are CMOS dual-channel amplifiers with significantly enhanced performance characteristics. These parts offer 210 V/µs slew rate and 105 MHz gain bandwidth product, compared to 1 V/µs and 1 MHz in the LMV342MA. All three variants are Active products with RoHS3 compliance. Selection among these three variants depends on packaging requirements: Tube (ADA4891-2ARZ), Cut Tape & Digi-Reel (ADA4891-2ARZ-R7), or Tape & Reel (ADA4891-2ARZ-RL). These parts are suitable for applications requiring higher-speed signal processing while maintaining the same supply voltage range and operating temperature span.

ISL28213FBZ-T13 is a General Purpose dual-channel amplifier from Renesas Electronics Corporation. This part meets the mandatory compatibility criteria with 1 V/µs slew rate and 2 MHz gain bandwidth product. It is Active product status with RoHS3 compliance and operates across the full -40°C to 125°C temperature range. This part is suitable for applications where the original LMV342MA specifications are adequate.

AD8542ARZ is a General Purpose dual-channel amplifier from Analog Devices Inc. with Active product status and RoHS3 compliance. This part operates across the full -40°C to 125°C temperature range and meets the mandatory package and supply voltage criteria. However, it exhibits lower output current capability (30 mA per channel versus 113 mA) and higher supply current (45 µA versus 107 µA), making it suitable only for applications with reduced output current requirements.

Parts Not Recommended for Direct Substitution:

AZV358MTR-G1 has a reduced operating temperature range (-40°C to 85°C) compared to the LMV342MA specification (-40°C to 125°C). This part is not suitable for applications requiring the full temperature range.

BU7266F-E2, BU7266SF-E2, and BU7486F-E2 are packaged in 8-SOP (0.173", 4.40mm Width) rather than 8-SOIC (0.154", 3.90mm Width). These parts have different physical dimensions and are not pin-compatible with the LMV342MA footprint. Additionally, BU7266F-E2 and BU7266SF-E2 have significantly reduced performance specifications (0.0024 V/µs slew rate, 4 kHz gain bandwidth product) unsuitable for general-purpose amplification.

Frequently Asked Questions (FAQ)

Q1: Can I use LMV342MA/NOPB as a direct replacement for LMV342MA?

A: Yes. LMV342MA/NOPB is electrically and functionally identical to LMV342MA. Both are dual-channel CMOS amplifiers with identical specifications across all critical parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and operating temperature range. The primary difference is product status: LMV342MA is obsolete while LMV342MA/NOPB is active. No circuit redesign is required.

Q2: What is the difference between the three ADA4891-2ARZ variants (standard, -R7, -RL)?

A: The three variants—ADA4891-2ARZ, ADA4891-2ARZ-R7, and ADA4891-2ARZ-RL—are electrically identical. The differences are in packaging and tape format: ADA4891-2ARZ is supplied in Tube packaging, ADA4891-2ARZ-R7 in Cut Tape & Digi-Reel format, and ADA4891-2ARZ-RL in Tape & Reel format. Selection depends on your procurement and assembly process requirements. All three are Active products with RoHS3 compliance.

Q3: Can I use ADA4891-2ARZ in place of LMV342MA if my application requires higher speed?

A: Yes, provided your circuit design can accommodate the enhanced performance. ADA4891-2ARZ offers 210 V/µs slew rate and 105 MHz gain bandwidth product versus 1 V/µs and 1 MHz in LMV342MA. Both maintain the same 2.7 V to 5.5 V supply voltage range and -40°C to 125°C operating temperature. However, the higher slew rate and bandwidth may introduce different noise characteristics or stability considerations in your specific circuit topology. Verify that the enhanced performance does not cause oscillation or noise issues in your application.

Q4: Why is AZV358MTR-G1 not recommended as a substitute?

A: AZV358MTR-G1 has a maximum operating temperature of 85°C, while LMV342MA operates to 125°C. If your application requires operation at temperatures above 85°C, this part cannot be used. Additionally, AZV358MTR-G1 has higher input bias current (15 nA versus 0.02 pA) and higher supply current (210 µA versus 107 µA), which may impact low-power design requirements.

Q5: Can I use BU7266F-E2 or BU7486F-E2 as substitutes?

A: No. These parts are packaged in 8-SOP (0.173", 4.40mm Width) rather than 8-SOIC (0.154", 3.90mm Width). The different package dimensions mean they are not pin-compatible with the LMV342MA footprint and cannot be used as direct substitutes without PCB redesign. Additionally, BU7266F-E2 and BU7266SF-E2 have significantly reduced performance specifications unsuitable for general-purpose amplification.

Q6: What are the key parameters I should verify when selecting a substitute?

A: The mandatory parameters for substitution are: (1) Amplifier Type: CMOS, (2) Number of Circuits: 2, (3) Output Type: Rail-to-Rail, (4) Package: 8-SOIC (0.154", 3.90mm Width), (5) Supply Voltage Range: 2.7 V to 5.5 V, and (6) Operating Temperature: -40°C to 125°C. Performance parameters such as slew rate, gain bandwidth product, input bias current, and output current should be verified to ensure they meet or exceed your application requirements.

Q7: Is RoHS compliance important when selecting a substitute?

A: RoHS compliance status depends on your application and regulatory requirements. LMV342MA is RoHS non-compliant. Most active substitute parts listed (LMV342MA/NOPB, ADA4891-2ARZ variants, AD8542ARZ, AZV358MTR-G1, BU7266 variants, and ISL28213FBZ-T13) are RoHS3 compliant. If your design requires RoHS compliance, select from the active parts with RoHS3 status. If RoHS compliance is not a requirement, LMV342MA/NOPB remains the most direct equivalent.

Q8: Which substitute offers the best low-power performance?

A: BU7266F-E2 and BU7266SF-E2 offer the lowest supply current at 700 nA. However, these parts have significantly reduced performance specifications (0.0024 V/µs slew rate, 4 kHz gain bandwidth product) and are not suitable for general-purpose amplification. For low-power operation with adequate performance, ISL28213FBZ-T13 offers 90 µA supply current with 1 V/µs slew rate and 2 MHz gain bandwidth product, making it a reasonable compromise between power consumption and performance.

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