LMV321M7X Equivalent & Substitute Parts

Part Overview

The LMV321M7X is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a 5-TSSOP SC-70-5 surface mount package. This rail-to-rail output amplifier operates across a 2.7 V to 5.5 V supply range and is designed for low-power applications requiring single-circuit amplification. The device is classified as Last Time Buy, indicating discontinued production status. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	1	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	1.7	mV
Current - Supply	130	µA
Current - Output / Channel	160	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	5-TSSOP, SC-70-5, SOT-353	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV321M7X is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Mandatory Matching Parameters:

Package / Case: 5-TSSOP, SC-70-5, SOT-353
Mounting Type: Surface Mount
Output Type: Rail-to-Rail
Voltage - Supply Span: Minimum 2.7 V, Maximum 5.5 V
Operating Temperature Range: -40°C to 85°C (minimum requirement)
Number of Circuits: 1

Secondary Compatibility Parameters:

Slew Rate: 1 V/µs (baseline)
Gain Bandwidth Product: 1 MHz (baseline)
Current - Input Bias: 15 nA (baseline)
Voltage - Input Offset: 1.7 mV (baseline)
Current - Supply: 130 µA (baseline)
Current - Output / Channel: 160 mA (baseline)

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents — Parts with identical or superior electrical specifications and matching package requirements. These parts maintain full functional compatibility without design modification.

Category 2: Functional Substitutes — Parts with comparable electrical performance within acceptable engineering tolerances, matching package requirements, and extended operating temperature ranges or enhanced specifications. These parts require verification of application-specific performance margins.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Package	Product Status
LMV321M7X	Texas Instruments	1	1	15	1.7	130	160	-40 to 85	SC-70-5	Last Time Buy
LMV321M7X/NOPB	Texas Instruments	1	1	15	1.7	130	—	-40 to 85	SC-70-5	Active
AZV321KSTR-G1	Diodes Incorporated	1	1	250	1.7	130	160	-40 to 85	SC-70-5	Active
LMV821SQ3T2G	onsemi	2	5.6	119	1	300	45	-40 to 85	SC-70-5	Active
NCS2001SQ2T2G	onsemi	1.6	1.4	0.01	0.5	820	96	-40 to 105	SC-70-5	Active
TSV6291AICT	STMicroelectronics	0.5	1.3	0.001	2	30	74	-40 to 125	SC-70-5	Active
TSV631ICT	STMicroelectronics	0.34	0.88	0.001	3	60	74	-40 to 125	SC-70-5	Active
TSV851AICT	STMicroelectronics	0.7	1.3	27	0.8	130	70	-40 to 125	SC-70-5	Active
TSV851ICT	STMicroelectronics	0.7	1.3	27	4	130	70	-40 to 125	SC-70-5	Active

Engineering Selection Recommendations

Tier 1: Direct Replacement (Recommended)

LMV321M7X/NOPB (Texas Instruments, Active) is the primary direct equivalent. This part maintains identical electrical specifications to the LMV321M7X and is currently in active production status. The packaging format differs (Tape & Reel versus Cut Tape), but the component itself is functionally identical. This part is suitable for immediate substitution without circuit redesign.

Tier 2: Functional Equivalents with Enhanced Specifications

AZV321KSTR-G1 (Diodes Incorporated, Active) provides equivalent electrical performance with identical package and supply voltage specifications. Input bias current is elevated to 250 nA compared to the baseline 15 nA, which may affect precision applications requiring ultra-low input current. This part is suitable for general-purpose applications where input bias current tolerance is not critical.

TSV851AICT and TSV851ICT (STMicroelectronics, Active) offer comparable gain-bandwidth product and slew rate with extended operating temperature range (-40°C to 125°C). Supply current matches the baseline specification at 130 µA. Output current is reduced to 70 mA. These parts are suitable for applications requiring extended temperature operation.

Tier 3: Enhanced Performance Alternatives

LMV821SQ3T2G (onsemi, Active) provides superior slew rate (2 V/µs) and gain-bandwidth product (5.6 MHz) compared to the baseline. However, supply current increases to 300 µA and output current decreases to 45 mA. This part is suitable for applications requiring faster transient response.

NCS2001SQ2T2G (onsemi, Active) offers extended supply voltage range (0.9 V to 7 V) and extended operating temperature (-40°C to 105°C). Input bias current is exceptionally low at 10 pA. Supply current is elevated to 820 µA. This part is suitable for low-power, wide-supply-range applications.

TSV6291AICT (STMicroelectronics, Active) provides ultra-low input bias current (1 pA) and extended operating temperature (-40°C to 125°C). Supply current is reduced to 30 µA. This part is suitable for precision, low-power applications.

TSV631ICT (STMicroelectronics, Active) provides ultra-low input bias current (1 pA) and extended operating temperature (-40°C to 125°C). Gain-bandwidth product is slightly reduced to 880 kHz. This part is suitable for precision, low-power applications with relaxed bandwidth requirements.

All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original component.

Frequently Asked Questions (FAQ)

Q: Can LMV321M7X/NOPB be used as a direct replacement for LMV321M7X?

A: Yes. LMV321M7X/NOPB is electrically and functionally identical to LMV321M7X. The difference is packaging format: LMV321M7X/NOPB is supplied in Tape & Reel format, while LMV321M7X is supplied in Cut Tape & Digi-Reel format. Both use the same SC-70-5 package. No circuit modification is required.

Q: What is the primary difference between TSV851ICT and TSV851AICT?

A: Both parts share identical electrical specifications (slew rate 0.7 V/µs, gain-bandwidth product 1.3 MHz, supply current 130 µA, output current 70 mA). The primary difference is voltage input offset: TSV851ICT specifies 4 mV maximum, while TSV851AICT specifies 800 µV maximum. TSV851AICT is suitable for precision applications requiring lower offset voltage.

Q: Why does NCS2001SQ2T2G have higher supply current than the LMV321M7X?

A: NCS2001SQ2T2G is designed for extended supply voltage range (0.9 V to 7 V) and ultra-low input bias current (10 pA). The increased supply current (820 µA versus 130 µA) reflects the additional circuitry required to maintain performance across this wider operating range. This part is suitable for applications requiring wide supply voltage compatibility.

Q: Can TSV6291AICT or TSV631ICT be used in applications requiring high output current?

A: No. TSV6291AICT provides 74 mA output current, and TSV631ICT provides 74 mA output current, compared to 160 mA for the LMV321M7X. These parts are suitable only for applications where output current requirements do not exceed 74 mA. For applications requiring 160 mA output current, use LMV321M7X/NOPB, AZV321KSTR-G1, or TSV851 series parts.

Q: Are all substitute parts available in SC-70-5 package?

A: Yes. All substitute parts listed are available in 5-TSSOP, SC-70-5, SOT-353 package format, ensuring mechanical and electrical compatibility with the original LMV321M7X footprint.

Q: Which substitute part offers the lowest power consumption?

A: TSV6291AICT offers the lowest supply current at 30 µA, compared to 130 µA for the LMV321M7X. TSV631ICT offers 60 µA supply current. Both parts are suitable for ultra-low-power applications.

Q: What is the temperature range limitation for direct substitution?

A: The LMV321M7X operates from -40°C to 85°C. LMV321M7X/NOPB maintains this identical range. Substitute parts from STMicroelectronics (TSV series) and onsemi (LMV821SQ3T2G, NCS2001SQ2T2G) extend the upper temperature limit to 125°C or 105°C respectively, providing enhanced thermal margin for applications operating near the baseline upper limit.

Q: Is RoHS compliance maintained across all substitute parts?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of the LMV321M7X.

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