LMV324MT Equivalent & Substitute Parts

Part Overview

The LMV324MT is a general-purpose operational amplifier featuring four independent circuits in a 14-TSSOP surface-mount package. Manufactured by Texas Instruments, this device provides rail-to-rail output capability with a 1 MHz gain-bandwidth product, designed for low-power applications requiring dual-supply or single-supply operation across 2.7 V to 5.5 V supply ranges.

The LMV324MT carries an Obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements. Active alternatives with comparable or enhanced electrical characteristics are available from multiple manufacturers including Texas Instruments (updated packaging variants), Analog Devices, Diodes Incorporated, and Rohm Semiconductor.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
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 (x4 Channels)	410	µA
Current - Output / Channel	160	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature Range	-40 to 125	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LMV324MT are grouped into two primary categories based on electrical and mechanical compatibility:

Category 1: Direct Functional Equivalents (General Purpose Amplifiers) These parts maintain identical or near-identical electrical specifications including 1 MHz gain-bandwidth product, 4-circuit configuration, rail-to-rail output, and 14-TSSOP packaging. Substitutes in this category include LMV324MT/NOPB, AD8544ARUZ, APX324TSG-13, and BD12734FVJ-E2. These devices are suitable for direct replacement in applications where the original performance envelope is required.

Category 2: Enhanced Performance Alternatives (CMOS Amplifiers) These parts offer superior electrical characteristics including higher slew rates (10 V/µs to 210 V/µs), higher gain-bandwidth products (10 MHz to 105 MHz), and lower input bias currents (1 pA to 2 pA). Substitutes in this category include ADA4891-4ARUZ, ADA4891-4ARUZ-R7, ADA4891-4ARUZ-RL, BU7487FV-E2, BU7487SFV-E2, and LMR344FVJ-E2. These devices are suitable for applications requiring improved dynamic performance while maintaining 14-TSSOP package compatibility and 2.7 V to 5.5 V supply range operation.

Key Parameters Determining Substitution:

Number of circuits: 4 (mandatory)
Output type: Rail-to-Rail (mandatory)
Package: 14-TSSOP surface mount (mandatory)
Supply voltage range: Minimum 2.7 V, Maximum 5.5 V (mandatory)
Operating temperature: -40°C minimum, 125°C maximum (preferred)
Gain-bandwidth product: 1 MHz minimum (Category 1), 2 MHz or higher (Category 2)

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA/pA)	Input Offset (mV/µV)	Supply Current (µA/mA)	Output Current (mA)	Temp Range (°C)	Product Status	RoHS Status
LMV324MT	Texas Instruments	General Purpose	1	1	15 nA	1.7 mV	410 µA	160	-40 to 125	Obsolete	Non-compliant
LMV324MT/NOPB	Texas Instruments	General Purpose	1	1	15 nA	1.7 mV	410 µA	160	-40 to 125	Active	ROHS3 Compliant
AD8544ARUZ	Analog Devices Inc.	General Purpose	0.92	1	4 pA	1 mV	45 µA	30	-40 to 125	Active	ROHS3 Compliant
ADA4891-4ARUZ	Analog Devices Inc.	CMOS	210	105	2 pA	2.5 mV	4.4 mA	125	-40 to 125	Active	ROHS3 Compliant
ADA4891-4ARUZ-R7	Analog Devices Inc.	CMOS	210	105	2 pA	2.5 mV	4.4 mA	125	-40 to 125	Active	ROHS3 Compliant
ADA4891-4ARUZ-RL	Analog Devices Inc.	CMOS	210	105	2 pA	2.5 mV	4.4 mA	125	-40 to 125	Active	ROHS3 Compliant
APX324TSG-13	Diodes Incorporated	General Purpose	1	1	10 nA	1.7 mV	340 µA	90	-40 to 85	Active	ROHS3 Compliant
BD12734FVJ-E2	Rohm Semiconductor	General Purpose	0.4	1	50 nA	1 mV	1.2 mA	12	-40 to 85	Active	ROHS3 Compliant
BU7487FV-E2	Rohm Semiconductor	CMOS	10	10	1 pA	1 mV	6 mA	12	-40 to 105	Active	ROHS3 Compliant
BU7487SFV-E2	Rohm Semiconductor	CMOS	10	10	1 pA	1 mV	6 mA	12	-40 to 105	Active	ROHS3 Compliant
LMR344FVJ-E2	Rohm Semiconductor	CMOS	1	2	1 pA	0.25 mV	0.4 mA	113	-40 to 85	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Performance Profile):

LMV324MT/NOPB is the primary direct substitute, offering identical electrical specifications with Active product status and ROHS3 compliance. This part is recommended when design specifications require exact performance matching and regulatory compliance is mandatory.

APX324TSG-13 (Diodes Incorporated) provides functional equivalence with slightly reduced output current capability (90 mA vs. 160 mA) and narrower operating temperature range (-40°C to 85°C vs. -40°C to 125°C). This part is suitable for applications where the reduced temperature range and output current are acceptable.

For Low-Power Applications:

AD8544ARUZ (Analog Devices Inc.) offers significantly reduced supply current (45 µA vs. 410 µA) with improved input bias current (4 pA vs. 15 nA) while maintaining 1 MHz gain-bandwidth product. This part is suitable for battery-powered or low-power applications where the reduced output current (30 mA vs. 160 mA) meets design requirements.

For High-Performance Applications:

ADA4891-4ARUZ, ADA4891-4ARUZ-R7, and ADA4891-4ARUZ-RL (Analog Devices Inc.) provide enhanced dynamic performance with 105 MHz gain-bandwidth product and 210 V/µs slew rate. These parts are suitable for applications requiring improved frequency response and transient performance. Packaging variants differ: standard tube, Cut Tape & Digi-Reel, and Tape & Reel respectively.

LMR344FVJ-E2 (Rohm Semiconductor) offers CMOS technology with 2 MHz gain-bandwidth product, 1 V/µs slew rate, and superior input offset voltage (250 µV). This part is suitable for precision applications requiring low offset voltage while maintaining moderate bandwidth.

For Constrained Output Current Applications:

BD12734FVJ-E2 and BU7487FV-E2/BU7487SFV-E2 (Rohm Semiconductor) feature reduced output current capability (12 mA) and are suitable only for applications where output current requirements do not exceed this limit. These parts offer CMOS technology with very low input bias current (1 pA).

Compliance Considerations:

All substitute parts listed carry ROHS3 compliance status, addressing the non-compliant status of the original LMV324MT. Selection should prioritize parts with Active product status to ensure long-term supply availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q1: Can LMV324MT/NOPB be used as a direct replacement for LMV324MT?

A: Yes. LMV324MT/NOPB is electrically and mechanically identical to LMV324MT, with the primary differences being Active product status and ROHS3 compliance. The /NOPB designation indicates lead-free, RoHS-compliant packaging. Both parts share identical electrical specifications and 14-TSSOP package dimensions.

Q2: What is the key difference between general-purpose and CMOS amplifier substitutes?

A: General-purpose substitutes (AD8544ARUZ, APX324TSG-13, BD12734FVJ-E2) maintain the original 1 MHz gain-bandwidth product and are optimized for low-power operation. CMOS substitutes (ADA4891 series, BU7487 series, LMR344FVJ-E2) offer higher gain-bandwidth products (2 MHz to 105 MHz), higher slew rates (1 V/µs to 210 V/µs), and lower input bias currents (1 pA to 2 pA), enabling improved dynamic performance at the cost of higher supply current in some cases.

Q3: Are all substitute parts available in 14-TSSOP packaging?

A: Yes. All substitute parts listed are available in 14-TSSOP surface-mount packaging with 0.173" width and 4.40mm body width, ensuring mechanical compatibility with LMV324MT PCB layouts. Package designations may vary slightly (14-TSSOP, 14-TSSOP-BJ, 14-SSOP-B) but all are compatible with standard 14-pin TSSOP footprints.

Q4: Which substitute offers the lowest power consumption?

A: AD8544ARUZ provides the lowest supply current at 45 µA (total for 4 channels) compared to 410 µA for LMV324MT. However, AD8544ARUZ also provides reduced output current capability (30 mA vs. 160 mA), which may limit suitability for high-current output applications.

Q5: What is the operating temperature range limitation for APX324TSG-13?

A: APX324TSG-13 operates from -40°C to 85°C, compared to -40°C to 125°C for LMV324MT. This 40°C reduction in maximum operating temperature may be limiting for applications requiring extended high-temperature operation or automotive environments with elevated ambient temperatures.

Q6: Can ADA4891-4ARUZ variants be used interchangeably?

A: ADA4891-4ARUZ, ADA4891-4ARUZ-R7, and ADA4891-4ARUZ-RL are electrically identical with differences only in packaging format: standard tube, Cut Tape & Digi-Reel, and Tape & Reel respectively. Selection depends on procurement and assembly requirements rather than electrical performance.

Q7: Why do some substitutes show reduced output current capability?

A: Output current capability varies based on amplifier design and thermal characteristics. BD12734FVJ-E2 and BU7487 series are designed for low-power applications and feature 12 mA output current per channel. These parts are suitable only for applications where output current requirements do not exceed this specification. Verify output current requirements before selection.

Q8: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All substitute parts carry ROHS3 compliance, addressing regulatory requirements for modern electronics manufacturing. The original LMV324MT is RoHS non-compliant and should be replaced with compliant alternatives for new designs.

Q9: Is the 14-TSSOP package suitable for high-volume automated assembly?

A: Yes. The 14-TSSOP package is a standard surface-mount package widely supported by automated pick-and-place equipment and reflow soldering processes. All substitute parts use this package format, ensuring compatibility with standard PCB assembly procedures.

Q10: Which substitute offers the best input offset voltage specification?

A: LMR344FVJ-E2 provides the lowest input offset voltage at 250 µV, compared to 1 mV to 2.5 mV for other substitutes. This specification is relevant for precision analog applications requiring minimal DC offset. However, LMR344FVJ-E2 operates only to 85°C maximum temperature.

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