LPV324DR Equivalent & Substitute Parts

Part Overview

The LPV324DR is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail device in a 14-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The LPV324DR operates across a 2.7 V to 5 V supply range with low input bias current (2 nA) and minimal input offset voltage (1.5 mV), making it suitable for low-power analog signal processing applications. Due to its obsolete status, active alternative parts with compatible or enhanced electrical characteristics are required for new designs and production continuity.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324DR	—
Manufacturer	Texas Instruments	—
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	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	237	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply	28	µA (x4 Channels)
Current - Output / Channel	72	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324DR is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of circuits: 4 (quad configuration required)
Output type: Rail-to-rail operation
Package type: 14-SOIC surface mount (0.154" width, 3.90mm)
Supply voltage range: Minimum 2.7 V, maximum 5 V or higher
Operating temperature range: -40°C to 85°C or extended range

Secondary Performance Criteria:

Input bias current: 2 nA or lower
Input offset voltage: 1.5 mV or lower
Slew rate: 0.1 V/µs or higher
Gain bandwidth product: 237 kHz or higher
Output current per channel: 16 mA or higher

Substitute parts are grouped into two categories:

Category A - Direct Replacements (Same Base Product Line): Parts LPV324M/NOPB and LPV324MX/NOPB maintain identical electrical specifications to the LPV324DR, differing only in packaging format (Tube vs. Cut Tape & Digi-Reel). These parts are pin-compatible and functionally equivalent with active product status.

Category B - Enhanced Alternatives (Improved Performance): Parts LMV324M/NOPB, LMV324MX/NOPB, LMV324AM14X, MCP6474-E/SL, MCP6474T-E/SL, MCP6484-E/SL, BU7487F-E2, and LMR934F-GE2 provide superior electrical performance while maintaining 14-SOIC package compatibility and rail-to-rail output. These parts exceed the minimum parameter requirements and offer extended temperature ranges or improved supply voltage flexibility.

Parameter Comparison

Parameter	LPV324DR (Main)	LPV324M/NOPB	LPV324MX/NOPB	LMV324M/NOPB	LMV324MX/NOPB	LMV324AM14X	MCP6474-E/SL	MCP6484-E/SL	BU7487F-E2	LMR934F-GE2
Manufacturer	TI	TI	TI	TI	TI	onsemi	Microchip	Microchip	Rohm	Rohm
Product Status	Obsolete	Active	Active	Active	Active	Obsolete	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	General Purpose	CMOS	General Purpose
Number of Circuits	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
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOP (0.173", 4.40mm)	14-SOP (0.173", 4.40mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate (V/µs)	0.1	0.1	0.1	1	1	1.5	1.1	2.7	10	0.35
Gain Bandwidth Product (kHz)	237	152	152	1000	1000	1400	2000	4000	10000	1400
Current - Input Bias (nA)	2	2	2	15	15	1	1 (pA)	1 (pA)	1 (pA)	5
Voltage - Input Offset (mV)	1.5	1.5	1.5	1.7	1.7	1	1.5	1.5	1	1
Current - Supply (µA)	28 (x4)	28 (x4)	28 (x4)	410 (x4)	410 (x4)	100	100 (x4)	240 (x4)	6000	250
Current - Output / Channel (mA)	72	16	16	160	160	34	32	12	12	90
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	2.7	2	2.2	3	1.8
Voltage - Supply Span Max (V)	5	5	5	5.5	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 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 105	-40 to 85
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

LPV324M/NOPB and LPV324MX/NOPB are the primary recommended substitutes for the obsolete LPV324DR. Both parts maintain identical electrical performance specifications, including slew rate (0.1 V/µs), gain bandwidth product (152 kHz), input bias current (2 nA), and input offset voltage (1.5 mV). The distinction between these two parts is packaging format: LPV324M/NOPB is supplied in Tube packaging, while LPV324MX/NOPB is supplied in Cut Tape & Digi-Reel format. Both are active products with ROHS3 compliance and MSL 1 rating. Selection between these two should be based on procurement and assembly requirements.

For Enhanced Performance with Extended Temperature Range:

LMV324M/NOPB and LMV324MX/NOPB offer improved specifications over the LPV324DR while maintaining the same 14-SOIC package footprint. These parts provide extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), higher slew rate (1 V/µs versus 0.1 V/µs), and increased gain bandwidth product (1 MHz versus 237 kHz). Supply voltage range is expanded to 5.5 V maximum. These parts are suitable for applications requiring higher bandwidth or extended temperature operation. Packaging options include Tube (LMV324M/NOPB) and Cut Tape & Digi-Reel (LMV324MX/NOPB).

For CMOS Technology with Ultra-Low Input Bias Current:

MCP6474-E/SL and MCP6474T-E/SL (Microchip Technology) provide CMOS amplifier technology with input bias current of 1 pA (picoampere level), compared to 2 nA in the LPV324DR. These parts maintain 14-SOIC package compatibility and offer slew rate of 1.1 V/µs with 2 MHz gain bandwidth product. Supply voltage range extends to 2 V minimum and 5.5 V maximum. Operating temperature range is -40°C to 125°C. Packaging options are Tube (MCP6474-E/SL) and Tape & Reel (MCP6474T-E/SL).

For High-Speed General Purpose Applications:

MCP6484-E/SL (Microchip Technology) delivers superior performance with 2.7 V/µs slew rate and 4 MHz gain bandwidth product in a 14-SOIC package. This part maintains 1 pA input bias current and supports supply voltage from 2.2 V to 5.5 V with -40°C to 125°C operating range. This option is appropriate for applications requiring faster signal processing while maintaining low input bias characteristics.

For Rohm Semiconductor Alternatives:

BU7487F-E2 is a CMOS amplifier with 10 V/µs slew rate and 10 MHz gain bandwidth product, supplied in 14-SOP package (0.173" width, 4.40mm). This part features 1 pA input bias current and operates from 3 V to 5.5 V with -40°C to 105°C temperature range. Package dimensions differ slightly from the LPV324DR, requiring PCB layout verification.

LMR934F-GE2 is a general-purpose amplifier from Rohm with 0.35 V/µs slew rate and 1.4 MHz gain bandwidth product, supplied in 14-SOP package. This part operates from 1.8 V to 5 V and maintains -40°C to 85°C temperature range. Package dimensions differ from the LPV324DR.

Product Status Consideration:

All recommended substitute parts except LMV324AM14X carry active product status, ensuring long-term availability and supply chain stability. LMV324AM14X, while obsolete, is included due to its presence in the provided substitute list and superior electrical specifications (1 nA input bias current, 1.4 MHz bandwidth, 1 mV offset voltage).

Frequently Asked Questions (FAQ)

Q1: Can LPV324M/NOPB or LPV324MX/NOPB be used as direct drop-in replacements for LPV324DR?

A: Yes. LPV324M/NOPB and LPV324MX/NOPB are direct functional equivalents of the LPV324DR. All three parts share identical electrical specifications including slew rate (0.1 V/µs), gain bandwidth product (152 kHz), input bias current (2 nA), input offset voltage (1.5 mV), and supply voltage range (2.7 V to 5 V). Pin configuration and 14-SOIC package dimensions are identical. The only difference is packaging format: Tube versus Cut Tape & Digi-Reel. No circuit modifications are required.

Q2: What is the primary advantage of LMV324M/NOPB or LMV324MX/NOPB over the LPV324DR?

A: The LMV324 series provides extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), higher slew rate (1 V/µs versus 0.1 V/µs), and increased gain bandwidth product (1 MHz versus 237 kHz). Supply voltage maximum is also increased to 5.5 V. These improvements make the LMV324 series suitable for applications requiring higher bandwidth or operation in elevated temperature environments. Pin configuration and 14-SOIC package remain identical.

Q3: Are CMOS amplifiers (MCP6474, BU7487F-E2) compatible with designs using the LPV324DR?

A: CMOS amplifiers are generally compatible from a functional standpoint, as they maintain 4-circuit rail-to-rail configuration in 14-SOIC packages. However, CMOS technology introduces ultra-low input bias current (1 pA versus 2 nA), which may affect circuit behavior in applications with high-impedance input sources. CMOS amplifiers also exhibit different frequency response and noise characteristics. Circuit simulation or prototype testing is recommended when substituting CMOS devices for bipolar or JFET input amplifiers in precision applications.

Q4: What is the difference between LPV324MX/NOPB and LMV324MX/NOPB?

A: Both parts are supplied in identical 14-SOIC packages with Cut Tape & Digi-Reel packaging. The primary differences are: (1) LPV324MX/NOPB maintains the original LPV324 specifications (0.1 V/µs slew rate, 152 kHz bandwidth, -40°C to 85°C), while LMV324MX/NOPB offers enhanced performance (1 V/µs slew rate, 1 MHz bandwidth, -40°C to 125°C); (2) LMV324MX/NOPB supports supply voltage up to 5.5 V versus 5 V for LPV324MX/NOPB. Selection depends on whether the application requires extended temperature range or higher bandwidth.

Q5: Can parts with 14-SOP packages (BU7487F-E2, LMR934F-GE2) be used as substitutes?

A: 14-SOP packages have slightly different dimensions (0.173" width, 4.40mm) compared to 14-SOIC packages (0.154" width, 3.90mm). While pin pitch and count are identical, PCB footprint dimensions differ. These parts can be used as functional substitutes only if the PCB layout can accommodate the larger package width. Existing PCB designs with 14-SOIC footprints will require modification to accept 14-SOP packages. Verify footprint compatibility before design implementation.

Q6: What is the significance of input bias current differences between substitute parts?

A: Input bias current affects circuit performance in high-impedance applications. The LPV324DR has 2 nA input bias current. CMOS alternatives (MCP6474, BU7487F-E2) provide 1 pA input bias current, which is 2000 times lower. This ultra-low bias current reduces input offset errors in transimpedance amplifier circuits and high-impedance sensor interfaces. Conversely, higher bias current in some alternatives (LMV324 series at 15 nA) may require input bias current compensation in precision applications. Select based on circuit input impedance requirements.

Q7: Which substitute part offers the best overall performance improvement?

A: MCP6484-E/SL provides the most comprehensive performance enhancement with 2.7 V/µs slew rate, 4 MHz gain bandwidth product, 1 pA input bias current, and extended supply voltage range (2.2 V to 5.5 V). This part is suitable for applications requiring higher signal processing speed while maintaining low input bias characteristics. However, supply current is higher (240 µA total) compared to the LPV324DR (28 µA total), which may impact battery-powered applications.

Q8: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference document are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the LPV324DR. All parts carry EAR99 ECCN classification and REACH Unaffected status.

Q9: What packaging options are available for each substitute part?

A: LPV324M/NOPB is supplied in Tube packaging; LPV324MX/NOPB is supplied in Cut Tape & Digi-Reel. LMV324M/NOPB is supplied in Tube; LMV324MX/NOPB is supplied in Cut Tape & Digi-Reel. LMV324AM14X is supplied in Cut Tape & Digi-Reel. MCP6474-E/SL is supplied in Tube; MCP6474T-E/SL is supplied in Tape & Reel. MCP6484-E/SL is supplied in Tube. BU7487F-E2 and LMR934F-GE2 are supplied in Cut Tape & Digi-Reel. Selection should be based on assembly process requirements and procurement volume.

Q10: What is the inventory status of substitute parts?

A: LPV324MX/NOPB has 10,400 units in stock. LMV324MX/NOPB has 177,800 units in stock (highest availability). LMV324M/NOPB has 2,202 units. LMV324AM14X has 10,898 units. MCP6474-E/SL has 4,000 units. MCP6474T-E/SL has 6,400 units. MCP6484-E/SL has 2,200 units. BU7487F-E2 has 965 units. LMR934F-GE2 has 3,301 units. LMV324MX/NOPB offers the highest stock availability for immediate procurement needs.

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