LPV324MT Equivalent & Substitute Parts Reference

Part Overview

The LPV324MT is a general-purpose operational amplifier featuring four circuits in a 14-TSSOP surface-mount package. Manufactured by Texas Instruments, this device provides rail-to-rail output capability with low input bias current and is designed for applications requiring low-power, general-purpose amplification across supply voltages from 2.7 V to 5 V.

The LPV324MT carries an obsolete product status. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements. Active alternatives with comparable or enhanced electrical characteristics are available from multiple manufacturers including Texas Instruments, Rohm Semiconductor, and Microchip Technology.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	152	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply (x4 Channels)	28	µA
Current - Output / Channel	16	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the LPV324MT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Four operational amplifier circuits in single package
Rail-to-rail output configuration
14-TSSOP or compatible surface-mount package (0.173", 4.40mm width)
Supply voltage range compatibility: minimum 2.7 V, maximum 5 V
Operating temperature range: -40°C to 85°C or wider
Input bias current: 2 nA or lower
Input offset voltage: 1.5 mV or lower

Secondary Performance Parameters:

Slew rate: 0.1 V/µs or higher
Gain bandwidth product: 152 kHz or higher
Output current per channel: 16 mA or higher
Supply current: 28 µA (x4 channels) or lower

Substitute parts are grouped into two categories based on amplifier type: general-purpose amplifiers (matching the LPV324MT classification) and CMOS amplifiers (offering enhanced performance characteristics while maintaining functional compatibility).

Parameter Comparison

Parameter	LPV324MT	LPV324MT/NOPB	BD12734FVJ-E2	LMR934FVJ-E2	MCP6474T-E/ST	MCP6484T-E/ST	BU7487FV-E2	BU7487SFV-E2
Manufacturer	Texas Instruments	Texas Instruments	Rohm Semiconductor	Rohm Semiconductor	Microchip Technology	Microchip Technology	Rohm Semiconductor	Rohm Semiconductor
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	General Purpose	CMOS	CMOS
Number of Circuits	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
Slew Rate (V/µs)	0.1	0.1	0.4	0.35	1.1	2.7	10	10
Gain Bandwidth Product (kHz)	152	152	1000	1400	2000	4000	10000	10000
Current - Input Bias (nA)	2	2	50	5	1 (pA)	1 (pA)	1 (pA)	1 (pA)
Voltage - Input Offset (mV)	1.5	1.5	1	1	1.5	1.5	1	1
Current - Supply (µA, x4 Channels)	28	28	1200	250	100	240	6000	6000
Current - Output / Channel (mA)	16	16	12	90	32	12	12	12
Voltage - Supply Span Min (V)	2.7	2.7	1.8	1.8	2	2.2	3	3
Voltage - Supply Span Max (V)	5	5	5	5	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 105	-40 to 105
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-LSSOP	14-LSSOP
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended for Immediate Replacement):

LPV324MT/NOPB is the direct equivalent manufactured by Texas Instruments. This part maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. Selection of LPV324MT/NOPB eliminates design verification requirements and ensures seamless integration into existing PCB layouts and assembly processes.

General-Purpose Amplifier Substitutes:

BD12734FVJ-E2 (Rohm Semiconductor) provides enhanced slew rate (0.4 V/µs) and gain bandwidth product (1 MHz) while maintaining general-purpose amplifier classification. This part supports lower minimum supply voltage (1.8 V) and carries ROHS3 compliance. Output current per channel is reduced to 12 mA.

LMR934FVJ-E2 (Rohm Semiconductor) offers improved slew rate (0.35 V/µs) and gain bandwidth product (1.4 MHz) with significantly higher output current per channel (90 mA). Supply current increases to 250 µA. This part supports 1.8 V minimum supply voltage and carries ROHS3 compliance.

MCP6484T-E/ST (Microchip Technology) provides enhanced slew rate (2.7 V/µs) and gain bandwidth product (4 MHz) with extended operating temperature range (-40°C to 125°C). Supply current increases to 240 µA. This part carries ROHS3 compliance and supports 2.2 V minimum supply voltage.

CMOS Amplifier Substitutes (Enhanced Performance):

MCP6474T-E/ST (Microchip Technology) is a CMOS amplifier offering slew rate of 1.1 V/µs and gain bandwidth product of 2 MHz. Input bias current is reduced to 1 pA. Extended operating temperature range (-40°C to 125°C) and ROHS3 compliance are provided. Supply voltage minimum is 2 V.

BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor) are CMOS amplifiers with significantly enhanced performance: slew rate of 10 V/µs and gain bandwidth product of 10 MHz. Input bias current is 1 pA. Operating temperature range extends to 105°C. Supply voltage minimum is 3 V. These parts carry ROHS3 compliance.

Selection Criteria by Application:

Low-power applications with minimal performance requirements: LPV324MT/NOPB
Applications requiring improved bandwidth and slew rate: LMR934FVJ-E2 or MCP6484T-E/ST
High-speed applications with extended temperature range: MCP6474T-E/ST or BU7487FV-E2
Applications requiring minimum supply voltage below 2.7 V: BD12734FVJ-E2 or LMR934FVJ-E2

All substitute parts are ROHS3 compliant and carry active product status, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can LPV324MT/NOPB be used as a direct replacement for LPV324MT?

A: Yes. LPV324MT/NOPB is the direct equivalent with identical electrical specifications and package configuration. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). No design changes are required.

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

A: General-purpose amplifiers (BD12734FVJ-E2, LMR934FVJ-E2, MCP6484T-E/ST) maintain input bias current in the nanoampere range and are optimized for traditional amplifier applications. CMOS amplifiers (MCP6474T-E/ST, BU7487FV-E2, BU7487SFV-E2) feature input bias current in the picoampere range, significantly lower supply current, and higher slew rates, making them suitable for high-impedance input applications and high-speed signal processing.

Q: Are all substitute parts compatible with the 14-TSSOP package footprint?

A: LPV324MT, LPV324MT/NOPB, BD12734FVJ-E2, LMR934FVJ-E2, MCP6474T-E/ST, and MCP6484T-E/ST use the 14-TSSOP package. BU7487FV-E2 and BU7487SFV-E2 use the 14-LSSOP package. While both packages have identical 0.173" width and 4.40mm pitch, PCB footprint verification is required before substitution.

Q: What supply voltage range must be verified when selecting a substitute?

A: The LPV324MT operates from 2.7 V to 5 V. Substitute parts have varying minimum supply voltages: BD12734FVJ-E2 and LMR934FVJ-E2 support 1.8 V minimum; MCP6474T-E/ST supports 2 V minimum; MCP6484T-E/ST supports 2.2 V minimum; BU7487FV-E2 and BU7487SFV-E2 support 3 V minimum. All support 5 V or higher maximum supply voltage. Verify that the selected substitute meets the application's minimum supply voltage requirement.

Q: Which substitute offers the lowest power consumption?

A: MCP6474T-E/ST provides the lowest supply current at 100 µA (x4 channels), compared to LPV324MT at 28 µA. For ultra-low-power applications where the LPV324MT's 28 µA specification is critical, LPV324MT/NOPB is the appropriate selection. For applications where slightly higher supply current is acceptable, MCP6474T-E/ST offers superior performance characteristics.

Q: Are all substitute parts RoHS compliant?

A: LPV324MT is RoHS non-compliant. All substitute parts listed (LPV324MT/NOPB, BD12734FVJ-E2, LMR934FVJ-E2, MCP6474T-E/ST, MCP6484T-E/ST, BU7487FV-E2, BU7487SFV-E2) are ROHS3 compliant, meeting current regulatory requirements for new designs and production.

Q: What is the maximum output current per channel for each substitute?

A: LPV324MT provides 16 mA per channel. BD12734FVJ-E2 and BU7487FV-E2 provide 12 mA per channel. LMR934FVJ-E2 provides 90 mA per channel. MCP6474T-E/ST provides 32 mA per channel. MCP6484T-E/ST provides 12 mA per channel. BU7487SFV-E2 provides 12 mA per channel. Verify that the selected substitute meets the application's output current requirement.

Q: Which substitute supports the widest operating temperature range?

A: MCP6474T-E/ST and MCP6484T-E/ST support -40°C to 125°C, providing the widest operating temperature range. BU7487FV-E2 and BU7487SFV-E2 support -40°C to 105°C. LPV324MT, LPV324MT/NOPB, BD12734FVJ-E2, and LMR934FVJ-E2 support -40°C to 85°C, matching the original part specification.

Q: Can CMOS amplifier substitutes be used in applications designed for general-purpose amplifiers?

A: CMOS amplifiers (MCP6474T-E/ST, BU7487FV-E2, BU7487SFV-E2) are functionally compatible with general-purpose amplifier applications. The primary advantages are lower input bias current (1 pA versus 2-50 nA), higher slew rates, and extended temperature ranges. Verification of circuit performance is recommended for applications with critical bandwidth or noise specifications.

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