LMV922MMX Equivalent & Substitute Parts

Part Overview

The LMV922MMX is a general-purpose operational amplifier manufactured by Texas Instruments, featuring two circuits in an 8-VSSOP package with rail-to-rail output capability. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and production continuity. The LMV922MMX operates across a 1.5V to 5V supply range with a 1 MHz gain-bandwidth product, making it suitable for low-power, low-speed analog signal processing applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LMV922MMX	—
Manufacturer	Texas Instruments	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Amplifier Type	General Purpose	—
Slew Rate	0.45	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	12	nA
Voltage - Input Offset	1.5	mV
Current - Supply	400	µA
Current - Output / Channel	75	mA
Voltage - Supply Span (Min)	1.5	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-VSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the LMV922MMX is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 2 (dual-channel requirement)
Output type: Rail-to-rail
Package compatibility: 8-pin surface mount (8-VSSOP, 8-MSOP, 8-TSSOP)
Supply voltage range: Minimum 1.5V to 5V operation
Operating temperature: -40°C to 85°C minimum
Amplifier type: General purpose

Secondary Compatibility Factors:

Slew rate: 0.45V/µs or higher
Gain-bandwidth product: 1 MHz or higher
Input bias current: 12 nA or lower
Input offset voltage: 1.5 mV or lower
Output current per channel: 75 mA or higher
Supply current: 400µA or lower

Substitute parts are grouped into two categories based on functional equivalence:

Category 1: Direct Functional Equivalents (2-Circuit, General Purpose) Parts maintaining similar performance characteristics with 2 circuits in compatible packages: AD8532ARUZ, AD8532ARUZ-REEL, MCP6422-E/MS, MCP6422T-E/MS, NCV20032DMR2G, NCS20032DMR2G

Category 2: Alternative Performance Profile (2-Circuit, CMOS Technology) Parts offering different performance trade-offs with ultra-low supply current: BU7266FVM-TR, BU7266SFVM-TR, BU7486FVM-TR

Category 3: Single-Circuit Alternative Part with reduced circuit count for applications requiring only one amplifier: AD8531ARTZ-REEL7

Parameter Comparison

Parameter	LMV922MMX	AD8532ARUZ	AD8532ARUZ-REEL	MCP6422T-E/MS	NCV20032DMR2G	BU7266FVM-TR	BU7486FVM-TR
Manufacturer	Texas Instruments	Analog Devices	Analog Devices	Microchip	onsemi	Rohm	Rohm
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.45	5	5	0.05	8	0.0024	10
Gain Bandwidth Product (MHz)	1	3	3	0.09	7	0.004	10
Current - Input Bias (pA/nA)	12 nA	5 pA	5 pA	1 pA	1 pA	1 pA	1 pA
Voltage - Input Offset (mV)	1.5	25	25	1	0.5	1	1
Current - Supply (µA)	400	750	750	4.4	275	0.7	6000
Current - Output / Channel (mA)	75	250	250	22	14	4	12
Voltage - Supply Span Min (V)	1.5	2.7	2.7	1.8	1.7	1.8	3
Voltage - Supply Span Max (V)	5	6	6	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 105
Package / Case	8-VSSOP	8-TSSOP	8-TSSOP	8-MSOP	8-MSOP	8-MSOP	8-MSOP
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance:

AD8532ARUZ and AD8532ARUZ-REEL are active, ROHS3-compliant alternatives from Analog Devices. Both maintain the 2-circuit configuration and rail-to-rail output in 8-TSSOP packages. These parts offer superior slew rate (5V/µs vs. 0.45V/µs) and gain-bandwidth product (3 MHz vs. 1 MHz), with lower input bias current (5 pA vs. 12 nA). Supply voltage range extends to 6V maximum. Operating temperature range matches the LMV922MMX (-40°C to 85°C). AD8532ARUZ-REEL is supplied on cut tape and digi-reel, while AD8532ARUZ is supplied in tube packaging.

For Low-Power Applications:

MCP6422T-E/MS from Microchip Technology provides ultra-low supply current (4.4µA per channel) with ROHS3 compliance and extended operating temperature to 125°C. This part maintains 2 circuits in 8-MSOP package with rail-to-rail output. Trade-offs include reduced slew rate (0.05V/µs) and lower output current per channel (22 mA). Suitable for battery-powered or energy-constrained applications.

For High-Speed Applications:

NCV20032DMR2G from onsemi delivers 8V/µs slew rate and 7 MHz gain-bandwidth product with ROHS3 compliance. This 2-circuit, rail-to-rail device in 8-MSOP package operates to 125°C and provides 14 mA output current per channel. Supply current is 275µA per channel pair.

For Ultra-Low-Power, Low-Frequency Applications:

BU7266FVM-TR and BU7266SFVM-TR from Rohm Semiconductor offer CMOS technology with 700nA supply current and 1 pA input bias current. These 2-circuit, rail-to-rail devices in 8-MSOP packages are ROHS3 compliant. BU7266SFVM-TR extends operating temperature to 105°C. Trade-offs include very low slew rate (0.0024V/µs), 4 kHz gain-bandwidth product, and 4 mA output current per channel. Suitable only for DC and very low-frequency signal processing.

For High-Speed, High-Current Applications:

BU7486FVM-TR from Rohm Semiconductor provides 10V/µs slew rate and 10 MHz gain-bandwidth product with ROHS3 compliance and 105°C operating temperature. This 2-circuit, rail-to-rail device in 8-MSOP package delivers 12 mA output current per channel. Minimum supply voltage is 3V.

For Single-Channel Requirement:

AD8531ARTZ-REEL7 from Analog Devices is a single-circuit alternative in SOT-23-5 package with ROHS3 compliance. This part offers 5V/µs slew rate, 3 MHz gain-bandwidth product, and 250 mA output current. Operating temperature range is -40°C to 85°C with 2.7V to 6V supply range.

All recommended substitutes are active products with ROHS3 compliance, addressing the obsolescence and RoHS non-compliance status of the LMV922MMX.

Frequently Asked Questions (FAQ)

Q: Can AD8532ARUZ directly replace LMV922MMX in existing PCB layouts?

A: Package compatibility requires verification. LMV922MMX uses 8-VSSOP (0.118", 3.00mm width), while AD8532ARUZ uses 8-TSSOP (0.173", 4.40mm width). Pin configurations differ. PCB redesign is necessary. Electrical parameters are compatible within the specified operating ranges.

Q: What is the primary difference between AD8532ARUZ and AD8532ARUZ-REEL?

A: Both parts are electrically identical. The difference is packaging format: AD8532ARUZ is supplied in tube packaging, while AD8532ARUZ-REEL is supplied on cut tape and digi-reel. Selection depends on assembly process requirements and volume.

Q: Why does MCP6422T-E/MS have lower output current per channel than LMV922MMX?

A: MCP6422T-E/MS is optimized for ultra-low power consumption (4.4µA total supply current per channel pair). This design trade-off reduces output current capability to 22 mA per channel. Applications requiring higher output current should select NCV20032DMR2G or AD8532ARUZ.

Q: Is BU7266FVM-TR suitable for audio frequency applications?

A: BU7266FVM-TR has a 4 kHz gain-bandwidth product and 0.0024V/µs slew rate, limiting it to DC and very low-frequency applications below approximately 400 Hz. Audio applications require higher bandwidth. NCV20032DMR2G or AD8532ARUZ are more appropriate for audio frequencies.

Q: What is the minimum supply voltage difference between LMV922MMX and substitute parts?

A: LMV922MMX operates from 1.5V minimum. Most substitutes require higher minimum voltages: AD8532ARUZ (2.7V), MCP6422T-E/MS (1.8V), NCV20032DMR2G (1.7V), BU7266FVM-TR (1.8V), BU7486FVM-TR (3V). For 1.5V operation, no direct substitute is available. Circuit redesign or voltage boost may be required.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance certification. The original LMV922MMX is RoHS non-compliant, making substitution necessary for RoHS-regulated applications.

Q: Can NCV20032DMR2G replace LMV922MMX in a 1.5V supply circuit?

A: No. NCV20032DMR2G requires minimum 1.7V supply. The LMV922MMX operates at 1.5V minimum. This substitute is not suitable for 1.5V applications.

Q: What is the temperature range advantage of MCP6422T-E/MS?

A: MCP6422T-E/MS operates to 125°C (TA), compared to LMV922MMX at 85°C maximum. This extended range is beneficial for high-temperature industrial and automotive applications. Other substitutes offer 85°C to 105°C ranges.

Q: How does input offset voltage affect circuit accuracy?

A: Lower input offset voltage improves DC accuracy. LMV922MMX has 1.5 mV offset. NCV20032DMR2G offers 0.5 mV (better), while AD8532ARUZ has 25 mV (worse). For precision DC applications, NCV20032DMR2G is preferred. For AC-coupled applications, offset voltage is less critical.

Q: Is AD8531ARTZ-REEL7 a viable substitute if only one amplifier circuit is needed?

A: AD8531ARTZ-REEL7 is a single-circuit device in SOT-23-5 package. It is electrically compatible but requires different PCB layout and assembly process. Use only if application requires single amplifier and PCB redesign is acceptable.

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