LMV324AM14X Equivalent & Substitute Parts

Part Overview

The LMV324AM14X is a general purpose operational amplifier featuring four circuits in a 14-SOIC surface mount package. Manufactured by onsemi, this device provides rail-to-rail output capability with a supply voltage range of 2.7 V to 5.5 V and operates across an extended temperature range of -40°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Manufacturer Part Number	LMV324AM14X
Manufacturer	onsemi
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C ~ 125°C
Slew Rate	1.5 V/µs
Gain Bandwidth Product	1.4 MHz
Current - Input Bias	1 nA
Voltage - Input Offset	1 mV
Current - Supply	100 µA
Current - Output / Channel	34 mA
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LMV324AM14X is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 14-SOIC surface mount package with 0.154" (3.90mm) width to ensure direct PCB footprint compatibility.

Electrical Specifications: Substitute parts must maintain the four-circuit configuration with rail-to-rail output capability. The supply voltage range of 2.7 V to 5.5 V is a fundamental requirement for circuit operation.

Thermal Performance: Operating temperature range compatibility is essential. The original part operates from -40°C to 125°C; substitutes operating within this range or a subset thereof are acceptable.

Performance Characteristics: Key electrical parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel determine functional equivalence. Substitutes with comparable or superior performance characteristics within the specified package and supply voltage constraints are classified as acceptable alternatives.

Compliance & Status: All substitute parts must maintain ROHS3 compliance and REACH unaffected status. Active product status is preferred for long-term availability.

Parameter Comparison

Parameter	LMV324AM14X	LMV324DR2G	LMV324IDR	AD8544ARZ	AD8544ARZ-REEL	AD8544ARZ-REEL7	AD8544WARZ-R7	AD8544WARZ-RL	LMV324BG-13	LMV324LIDT	LMV324M/NOPB
Manufacturer	onsemi	onsemi	UMW	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Diodes Incorporated	STMicroelectronics	Texas Instruments
Amplifier Type	General Purpose	Voltage Feedback	Voltage Feedback	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.1 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-25°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Slew Rate	1.5 V/µs	1 V/µs	Not Specified	0.92 V/µs	0.92 V/µs	0.92 V/µs	0.92 V/µs	0.92 V/µs	1 V/µs	0.7 V/µs	1 V/µs
Gain Bandwidth Product	1.4 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1.3 MHz	1 MHz
Current - Input Bias	1 nA	1 nA	10 pA	4 pA	4 pA	4 pA	4 pA	4 pA	15 nA	27 nA	15 nA
Voltage - Input Offset	1 mV	1.7 mV	800 µV	1 mV	1 mV	1 mV	1 mV	1 mV	1.7 mV	1 mV	1.7 mV
Current - Supply	100 µA	100 µA (x4)	45 µA	45 µA (x4)	45 µA (x4)	45 µA (x4)	45 µA (x4)	45 µA (x4)	340 µA (x4)	130 µA (x4)	410 µA (x4)
Current - Output / Channel	34 mA	160 mA	25 mA	30 mA	30 mA	30 mA	30 mA	30 mA	90 mA	70 mA	160 mA
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation - Direct Manufacturer Equivalent:

The LMV324DR2G (onsemi) is the manufacturer-recommended direct substitute. This part maintains the same base product number (LMV324) and is classified as active. It provides identical package compatibility and supply voltage specifications. The operating temperature range is reduced to -40°C to 85°C, which is a consideration for applications requiring the full -40°C to 125°C range of the original part. This part is suitable for applications where the narrower temperature range is acceptable.

Alternative Recommendations - General Purpose Amplifiers:

The AD8544ARZ, AD8544ARZ-REEL, AD8544ARZ-REEL7, AD8544WARZ-R7, and AD8544WARZ-RL (Analog Devices Inc.) are functionally equivalent general purpose amplifiers with identical circuit count, output type, and package configuration. These parts maintain the full -40°C to 125°C operating temperature range and are classified as active. They provide superior input bias current performance (4 pA versus 1 nA) and are available in multiple packaging formats.

Alternative Recommendations - LMV324 Base Product Family:

The LMV324BG-13 (Diodes Incorporated), LMV324LIDT (STMicroelectronics), and LMV324M/NOPB (Texas Instruments) are all members of the LMV324 base product family. These parts maintain general purpose amplifier classification with identical circuit count and package specifications. All operate across the full -40°C to 125°C temperature range and maintain ROHS3 compliance.

Voltage Feedback Alternative:

The LMV324IDR (UMW) is a voltage feedback amplifier variant with superior input bias current (10 pA) and input offset voltage (800 µV). This part operates with a lower minimum supply voltage (2.1 V) and reduced supply current (45 µA). The operating temperature range is limited to -25°C to 85°C. This part is suitable for low-power applications where the narrower temperature range is acceptable.

Compliance Verification:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original LMV324AM14X specifications.

Frequently Asked Questions (FAQ)

Q: Can the LMV324AM14X be directly replaced with the LMV324DR2G?

A: The LMV324DR2G is the manufacturer-recommended substitute and shares identical package, supply voltage range, and circuit configuration. The primary difference is the operating temperature range, which is reduced from -40°C to 125°C to -40°C to 85°C. Direct replacement is possible for applications operating within the narrower temperature range.

Q: What is the difference between general purpose and voltage feedback amplifier types?

A: The LMV324AM14X is classified as a general purpose amplifier, while the LMV324DR2G and LMV324IDR are voltage feedback amplifiers. Both classifications indicate operational amplifier topologies suitable for the same package and circuit count. The voltage feedback variants may exhibit different frequency response and stability characteristics in specific circuit configurations.

Q: Are all substitute parts available in the same packaging format?

A: No. The original LMV324AM14X is supplied in Cut Tape (CT) & Digi-Reel® packaging. Substitute parts are available in multiple packaging formats including Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube. Packaging selection should be based on procurement and assembly requirements.

Q: Which substitute part offers the best performance characteristics?

A: The AD8544ARZ series (Analog Devices Inc.) provides superior input bias current performance (4 pA) compared to the original part (1 nA) and maintains the full -40°C to 125°C operating temperature range. The LMV324IDR offers the lowest input offset voltage (800 µV) and supply current (45 µA), making it suitable for precision and low-power applications.

Q: What is the significance of the operating temperature range difference?

A: The original LMV324AM14X operates from -40°C to 125°C. Several substitute parts, including the LMV324DR2G and LMV324IDR, operate within narrower ranges (-40°C to 85°C and -25°C to 85°C respectively). Applications requiring operation at temperatures above 85°C must use substitutes that maintain the full temperature range, such as the AD8544 series or LMV324LIDT.

Q: How does moisture sensitivity level affect component selection?

A: The original LMV324AM14X has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Substitute parts with MSL 3 (168 Hours), such as the LMV324DR2G and LMV324BG-13, require controlled storage and handling conditions. For applications with extended storage or high-humidity environments, MSL 1 parts are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, consistent with the original LMV324AM14X specifications.

Q: What is the inventory status of substitute parts?

A: The LMV324LIDT (STMicroelectronics) has the highest inventory availability at 500,400 pieces. The LMV324IDR (UMW) has 95,200 pieces available. The AD8544ARZ-REEL7 has 26,342 pieces available. Inventory levels should be verified with suppliers for current availability.

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