LMV324AMTC14X Equivalent & Substitute Parts

Part Overview

The LMV324AMTC14X is a general-purpose operational amplifier manufactured by onsemi, featuring four independent circuits in a 14-TSSOP surface-mount package. 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 new designs and ongoing production requirements. Substitute parts must maintain compatibility across electrical performance parameters, mechanical packaging, and thermal operating conditions.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LMV324AMTC14X	—
Manufacturer	onsemi	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitute parts for the LMV324AMTC14X are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Compatibility Criteria:

Package type: 14-TSSOP surface-mount configuration
Number of circuits: 4 independent amplifier circuits
Output configuration: Rail-to-rail output capability
Supply voltage range: Minimum 2.7 V, maximum 5.5 V
Operating temperature range: -40°C to 125°C (or compatible subset)
Mounting type: Surface mount

Substitution Categories:

Direct Manufacturer Substitutes maintain the LMV324 base product number with different packaging or performance grades from onsemi. These parts share the same core design with variations in output current capability and temperature specifications.

Similar Cross-Manufacturer Substitutes provide equivalent functionality from alternative manufacturers (Texas Instruments, STMicroelectronics, Analog Devices Inc.) with identical or superior electrical performance within the specified parameter ranges. These parts maintain the 14-TSSOP package and four-circuit configuration while offering different amplifier topologies (General Purpose, Voltage Feedback, or CMOS).

Performance Variants include parts with modified electrical characteristics such as slew rate, gain-bandwidth product, input bias current, and output current per channel. These variants remain substitutable when the application requirements permit operation within their specified ranges.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA/pA)	Input Offset (mV/µV)	Supply Current (µA)	Output Current/Ch (mA)	Temp Range (°C)	Product Status
LMV324AMTC14X	onsemi	General Purpose	1.5	1.4	1	1	100	34	-40 to 125	Obsolete
LMV324DTBR2G	onsemi	Voltage Feedback	1	1	1	1.7	100	160	-40 to 85	Active
AD8619WARUZ-RL	Analog Devices Inc.	CMOS	0.1	0.4	0.0002 pA	0.4 µV	38	80	-40 to 125	Active
LMV324IPWR	Texas Instruments	General Purpose	1	1	15	1.7	410	40	-40 to 125	Active
LMV324LIPT	STMicroelectronics	General Purpose	0.7	1.3	27	1	130	70	-40 to 125	Active
LMV324MT/NOPB	Texas Instruments	General Purpose	1	1	15	1.7	410	160	-40 to 125	Active
LMV324MTX/NOPB	Texas Instruments	General Purpose	1	1	15	1.7	410	160	-40 to 125	Active
LMV604MT/NOPB	Texas Instruments	General Purpose	1	1	0.02 pA	0.55 mV	100	113	-40 to 125	Active
LMV614MTX/NOPB	Texas Instruments	General Purpose	0.42	1.5	14	1	116	100	-40 to 125	Active
LPV324MT/NOPB	Texas Instruments	General Purpose	0.1	0.152	2	1.5	28	16	-40 to 85	Active
LPV324MTX/NOPB	Texas Instruments	General Purpose	0.1	0.152	2	1.5	28	16	-40 to 85	Active

Engineering Selection Recommendations

Primary Substitutes for Direct Replacement:

The LMV324IPWR (Texas Instruments) and LMV324MT/NOPB (Texas Instruments) are the preferred direct substitutes for the LMV324AMTC14X. Both parts maintain the general-purpose amplifier topology, four-circuit configuration, rail-to-rail output, and full -40°C to 125°C operating temperature range. These parts are active products with RoHS3 compliance and established supply availability. The LMV324IPWR offers higher inventory levels (95,300 units) and is packaged in Cut Tape & Digi-Reel format, while LMV324MT/NOPB is available in Tube packaging.

Secondary Substitutes with Performance Variations:

The LMV324LIPT (STMicroelectronics) provides general-purpose amplifier functionality with identical supply voltage range and full temperature coverage. This part exhibits slightly reduced slew rate (0.7 V/µs versus 1.5 V/µs) and higher input bias current (27 nA versus 1 nA), but maintains compatibility with most general-purpose applications.

The LMV324DTBR2G (onsemi) operates as a voltage feedback amplifier with enhanced output current capability (160 mA per channel versus 34 mA). This part is limited to -40°C to 85°C operating temperature and is suitable for applications not requiring the full extended temperature range.

Specialized Alternatives:

The LMV604MT/NOPB (Texas Instruments) provides ultra-low input bias current (0.02 pA) and reduced input offset voltage (550 µV), making it suitable for precision measurement applications. The LMV614MTX/NOPB offers enhanced gain-bandwidth product (1.5 MHz) and operates across an extended lower supply voltage range (1.8 V minimum).

The AD8619WARUZ-RL (Analog Devices Inc.) is a CMOS amplifier with extremely low input bias current (0.2 pA) and operates across the full -40°C to 125°C temperature range. This part exhibits reduced slew rate (0.1 V/µs) and lower gain-bandwidth product (400 kHz), limiting its use to low-frequency applications.

The LPV324MT/NOPB and LPV324MTX/NOPB (Texas Instruments) are ultra-low-power variants with minimal supply current (28 µA) and reduced output current capability (16 mA per channel). These parts are restricted to -40°C to 85°C operation and are suitable only for battery-powered or energy-constrained applications.

Compliance and Availability:

All recommended active substitutes maintain REACH compliance and EAR99 export classification. Texas Instruments parts carry RoHS3 certification with varying moisture sensitivity levels. STMicroelectronics LMV324LIPT offers MSL Level 1 (Unlimited) rating, equivalent to the original part. Inventory availability ranges from 988 to 95,300 units across the substitute options.

Frequently Asked Questions (FAQ)

Q: Can the LMV324AMTC14X be directly replaced with any of the listed substitutes?

A: Direct replacement is possible with LMV324IPWR and LMV324MT/NOPB from Texas Instruments, which maintain identical electrical specifications and full temperature range operation. Other substitutes require application-specific evaluation based on performance parameter differences.

Q: What is the primary difference between the LMV324AMTC14X and LMV324DTBR2G?

A: The LMV324DTBR2G uses voltage feedback amplifier topology versus general-purpose topology in the original part. The DTBR2G variant provides significantly higher output current per channel (160 mA versus 34 mA) but operates only to 85°C maximum temperature instead of 125°C.

Q: Are all substitute parts available in the same 14-TSSOP package?

A: Yes, all listed substitute parts are packaged in 14-TSSOP (0.173", 4.40mm Width) surface-mount configuration. Packaging format variations (Tube, Cut Tape & Digi-Reel, Tape & Reel) affect handling and supply chain logistics but do not alter electrical or mechanical compatibility.

Q: Which substitute offers the lowest power consumption?

A: The LPV324MT/NOPB and LPV324MTX/NOPB variants consume only 28 µA total supply current across four channels, compared to 100 µA in the original part. However, these low-power options are limited to -40°C to 85°C operation and provide reduced output current capability (16 mA per channel).

Q: What is the significance of the input bias current differences among substitutes?

A: Input bias current variations range from 0.0002 pA (AD8619WARUZ-RL CMOS variant) to 27 nA (LMV324LIPT). For general-purpose applications with high-impedance inputs, lower bias current reduces input offset errors. The original part specifies 1 nA, which is adequate for most standard applications. Ultra-low bias current variants (AD8619, LMV604) are beneficial for precision instrumentation.

Q: Can the LMV324AMTC14X be replaced in applications requiring operation above 85°C?

A: Only substitutes rated for -40°C to 125°C operation are suitable for extended temperature applications. These include LMV324IPWR, LMV324LIPT, LMV324MT/NOPB, LMV324MTX/NOPB, LMV604MT/NOPB, LMV614MTX/NOPB, and AD8619WARUZ-RL. The LMV324DTBR2G, LPV324MT/NOPB, and LPV324MTX/NOPB are restricted to 85°C maximum.

Q: What are the RoHS and REACH compliance statuses of the substitute parts?

A: All substitute parts maintain REACH compliance (REACH Unaffected status). Texas Instruments and STMicroelectronics parts carry RoHS3 certification. Analog Devices Inc. AD8619WARUZ-RL also carries RoHS3 compliance. The original LMV324AMTC14X does not specify RoHS status due to its obsolete classification.

Q: Which substitute provides the best slew rate performance?

A: The LMV324AMTC14X original part specifies 1.5 V/µs slew rate. The LMV614MTX/NOPB provides comparable performance at 1.5 MHz gain-bandwidth product with 0.42 V/µs slew rate. For maximum slew rate, LMV324IPWR, LMV324MT/NOPB, LMV324MTX/NOPB, LMV604MT/NOPB, and LMV324DTBR2G all provide 1 V/µs. Low-frequency applications can utilize LPV324 and AD8619 variants with 0.1 V/µs slew rate.

Q: Are there inventory availability differences among the substitute options?

A: Significant inventory variations exist. LMV324IPWR (Texas Instruments) offers the highest availability at 95,300 units. LMV614MTX/NOPB provides 35,200 units. LPV324MTX/NOPB offers 10,300 units. Smaller quantities are available for LMV324LIPT (3,800 units), LMV324DTBR2G (4,035 units), and other variants. The original LMV324AMTC14X has 831 units in stock but is obsolete.

Q: What packaging format should be selected for high-volume production?

A: For high-volume manufacturing, Cut Tape & Digi-Reel or Tape & Reel formats are standard. LMV324IPWR (Cut Tape & Digi-Reel) and LMV614MTX/NOPB (Tape & Reel) are optimized for automated assembly. Tube packaging (LMV324MT/NOPB, LMV604MT/NOPB, LPV324MT/NOPB) is suitable for lower-volume or manual assembly operations.

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