LMV931MF Equivalent & Substitute Parts

Part Overview

The LMV931MF is a general-purpose operational amplifier manufactured by Texas Instruments, packaged in SOT-23-5 surface mount configuration. This device features rail-to-rail output capability and operates across a supply voltage range of 1.8 V to 5.5 V, making it suitable for low-voltage analog signal processing applications. The LMV931MF is designated as Last Time Buy status, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and design revisions.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.42	V/µs
Gain Bandwidth Product	1.5	MHz
Current - Input Bias	14	nA
Voltage - Input Offset	1	mV
Current - Supply	116	µA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LMV931MF are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Voltage Supply Range: Minimum 1.8 V, Maximum 5.5 V
Operating Temperature Range: -40°C to 125°C (preferred) or -40°C to 85°C (acceptable)
Mounting Type: Surface Mount
Package Compatibility: SOT-23-5 or equivalent 5-pin surface mount packages

Secondary Electrical Parameters (within acceptable tolerance):

Slew Rate: 0.4 V/µs to 1 V/µs
Gain Bandwidth Product: 900 kHz to 2 MHz
Current - Input Bias: 1 pA to 250 nA
Voltage - Input Offset: 100 µV to 1.7 mV
Current - Supply: 70 µA to 162 µA
Current - Output / Channel: 12 mA to 160 mA

Substitutes are grouped into two categories: direct equivalents (identical electrical specifications and packaging) and functional equivalents (compatible electrical performance within specified ranges, same package family).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
LMV931MF	Texas Instruments	0.42	1.5	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Last Time Buy
LMV931MF/NOPB	Texas Instruments	0.42	1.5	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Active
LMV931MFX/NOPB	Texas Instruments	0.42	1.5	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Active
AZV321KTR-G1	Diodes Incorporated	1	1	250	1.7	130	160	2.7	5.5	-40 to 85	SOT-23-5	Active
BU7241G-TR	Rohm Semiconductor	0.4	0.9	0.001	1	70	12	1.8	5.5	-40 to 85	5-SSOP	Active
ISL28113FHZ-T7	Renesas Electronics	1	2	0.003	0.5	90	22	1.8	5.5	-40 to 125	SOT-23-5	Active
LMV321ILT	STMicroelectronics	0.45	1.3	16	0.1	162	48	2.7	6	-40 to 125	SOT-23-5	Active
LMV321IYLT	STMicroelectronics	0.45	1.3	16	0.1	162	48	2.7	6	-40 to 125	SOT-23-5	Active
LMV321WG-7	Diodes Incorporated	1	1	15	1.7	110	90	2.7	5.5	-40 to 85	SOT-25	Active
MCP6001RT-E/OT	Microchip Technology	0.6	1	0.001	4.5	100	23	1.8	6	-40 to 125	SOT-23-5	Active
MCP6001RT-I/OT	Microchip Technology	0.6	1	0.001	4.5	100	23	1.8	6	-40 to 85	SOT-23-5	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

The LMV931MF/NOPB and LMV931MFX/NOPB are direct equivalents manufactured by Texas Instruments. Both parts maintain identical electrical specifications and packaging to the LMV931MF. The LMV931MFX/NOPB variant is recommended as the primary substitute due to higher inventory availability (38,100 units) and active product status. Both parts are ROHS3 compliant with MSL 1 rating and support the full operating temperature range of -40°C to 125°C.

Functional Equivalents (Secondary Substitutes):

The following parts provide functional equivalence within the specified electrical parameter ranges:

ISL28113FHZ-T7 (Renesas Electronics): Maintains SOT-23-5 packaging, full temperature range (-40°C to 125°C), and supply voltage compatibility (1.8 V to 5.5 V). Offers superior input offset voltage (500 µV) and lower input bias current (3 pA). Gain bandwidth product of 2 MHz exceeds the LMV931MF specification. Active product status with 3,400 units in stock.

MCP6001RT-E/OT (Microchip Technology): Provides SOT-23-5 packaging with extended supply voltage range (1.8 V to 6 V) and full temperature range (-40°C to 125°C). Input bias current of 1 pA is superior. Supply current of 100 µA is lower than the LMV931MF. Active product status with 20,100 units in stock.

LMV321ILT and LMV321IYLT (STMicroelectronics): Both maintain SOT-23-5 packaging and full temperature range (-40°C to 125°C). Supply voltage minimum is 2.7 V (higher than LMV931MF 1.8 V minimum). LMV321IYLT includes AEC-Q100 automotive qualification. Active product status with 35,100 and 32,300 units respectively.

Parts with Package Variations:

LMV321WG-7 (Diodes Incorporated) uses SOT-25 packaging instead of SOT-23-5, requiring PCB layout modification. Operating temperature range limited to -40°C to 85°C. Not recommended for applications requiring full -40°C to 125°C range.

BU7241G-TR (Rohm Semiconductor) uses 5-SSOP packaging, requiring PCB redesign. Operating temperature limited to -40°C to 85°C. Output current capability of 12 mA is significantly lower than LMV931MF (100 mA).

AZV321KTR-G1 (Diodes Incorporated) maintains SOT-23-5 packaging but supply voltage minimum is 2.7 V and operating temperature limited to -40°C to 85°C.

Compliance and Certification:

All recommended substitutes are ROHS3 compliant and REACH unaffected. MSL ratings are 1 (unlimited) for most substitutes, with exceptions noted (AZV321KTR-G1 and LMV321WG-7 have MSL 3 with 168-hour limit).

Frequently Asked Questions (FAQ)

Q: Can I directly replace LMV931MF with LMV931MFX/NOPB without circuit modification?

A: Yes. The LMV931MFX/NOPB is a direct equivalent with identical electrical specifications and SOT-23-5 packaging. No circuit or PCB modifications are required. Both parts are manufactured by Texas Instruments and maintain the same pin configuration, supply voltage range (1.8 V to 5.5 V), and operating temperature range (-40°C to 125°C).

Q: What is the difference between LMV931MF/NOPB and LMV931MFX/NOPB?

A: Both are direct equivalents to the LMV931MF with identical electrical performance. The primary difference is packaging format: LMV931MF/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format, while LMV931MFX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Inventory availability differs significantly (2,245 units versus 38,100 units). Electrical specifications are identical.

Q: Can I use ISL28113FHZ-T7 as a substitute if my application requires -40°C to 125°C operation?

A: Yes. The ISL28113FHZ-T7 supports the full operating temperature range of -40°C to 125°C, matching the LMV931MF specification. It maintains SOT-23-5 packaging and supply voltage range (1.8 V to 5.5 V). The ISL28113FHZ-T7 offers improved input offset voltage (500 µV versus 1 mV) and lower input bias current (3 pA versus 14 nA).

Q: Why is BU7241G-TR not recommended as a direct substitute?

A: The BU7241G-TR uses 5-SSOP packaging instead of SOT-23-5, requiring PCB layout redesign. The operating temperature range is limited to -40°C to 85°C, which does not support the full -40°C to 125°C range of the LMV931MF. Output current capability is 12 mA, significantly lower than the LMV931MF specification of 100 mA. These differences make it unsuitable for direct substitution.

Q: What is the minimum supply voltage requirement for substitute parts?

A: The LMV931MF operates at a minimum supply voltage of 1.8 V. Most recommended substitutes (LMV931MFX/NOPB, ISL28113FHZ-T7, MCP6001RT-E/OT, MCP6001RT-I/OT) maintain this 1.8 V minimum. However, LMV321ILT, LMV321IYLT, LMV321WG-7, and AZV321KTR-G1 require a minimum supply voltage of 2.7 V. Verify your circuit design operates above 2.7 V before selecting these alternatives.

Q: Can I use MCP6001RT-I/OT in applications requiring -40°C to 125°C operation?

A: No. The MCP6001RT-I/OT operating temperature range is limited to -40°C to 85°C. For applications requiring full -40°C to 125°C operation, use MCP6001RT-E/OT instead, which supports the extended temperature range while maintaining identical electrical specifications and SOT-23-5 packaging.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts listed are ROHS3 compliant. Moisture sensitivity levels vary: most parts have MSL 1 (unlimited), while AZV321KTR-G1 and LMV321WG-7 have MSL 3 (168-hour limit). Verify storage and handling procedures for MSL 3 components.

Q: What is the key difference between LMV321ILT and LMV321IYLT?

A: Both parts have identical electrical specifications and SOT-23-5 packaging. The LMV321IYLT includes AEC-Q100 automotive qualification, making it suitable for automotive applications. The LMV321ILT is the standard industrial grade version. Both support -40°C to 125°C operation and are ROHS3 compliant with MSL 1 rating.

Q: Can I substitute LMV321WG-7 without PCB modification?

A: No. The LMV321WG-7 uses SOT-25 packaging instead of SOT-23-5, requiring PCB layout redesign. Additionally, the operating temperature range is limited to -40°C to 85°C. PCB footprint modification and thermal testing are necessary before implementation.

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