LPV324DRE4 Equivalent & Substitute Parts

Part Overview

The LPV324DRE4 is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement continuity. The LPV324DRE4 serves applications requiring low-power, low-speed amplification with minimal input bias current and offset voltage characteristics suitable for battery-powered and precision measurement systems.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324DRE4	—
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 LPV324DRE4 is determined by the following critical parameters that must be maintained or exceeded:

Mandatory Compatibility Parameters:

Number of Circuits: 4 (quad configuration required)
Output Type: Rail-to-Rail (functional requirement)
Package / Case: 14-SOIC with 0.154" (3.90mm) width (PCB layout compatibility)
Mounting Type: Surface Mount (assembly process compatibility)
Voltage - Supply Span: Minimum 2.7V to 5V range (power supply compatibility)

Performance Parameters (Substitution Basis):

Slew Rate: 0.1 V/µs or higher acceptable
Gain Bandwidth Product: 237 kHz or higher acceptable
Current - Input Bias: 2 nA or lower acceptable
Voltage - Input Offset: 1.5 mV or lower acceptable
Current - Supply: 28 µA or lower acceptable
Current - Output / Channel: 72 mA or higher acceptable
Operating Temperature: -40°C to 85°C minimum (extended range acceptable)

Compliance Parameters:

RoHS3 Compliant (regulatory requirement)
Moisture Sensitivity Level 1 (handling compatibility)

Substitute parts are grouped into two categories: Direct Replacements (identical or superior performance within same package) and Functional Equivalents (meet all mandatory parameters with performance variations).

Parameter Comparison

Parameter	LPV324DRE4	LPV324M/NOPB	LPV324MX/NOPB	LMV324M/NOPB	LMV324MX/NOPB	LMR934F-GE2	MCP6484-E/SL	LMV324AM14X
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor	Microchip Technology	onsemi
Amplifier Type	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
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
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 (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)
Mounting Type	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	0.35	2.7	1.5
Gain Bandwidth Product (kHz)	237	152	152	1000	1000	1400	4000	1400
Current - Input Bias (nA)	2	2	2	15	15	5	1	1
Voltage - Input Offset (mV)	1.5	1.5	1.5	1.7	1.7	1	1.5	1
Current - Supply (µA)	28	28	28	410	410	250	240	100
Current - Output / Channel (mA)	72	16	16	160	160	90	12	34
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	1.8	2.2	2.7
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 125	-40 to 125	-40 to 85	-40 to 125	-40 to 125
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Category 1: Direct Replacements (Same Manufacturer, Active Status)

LPV324M/NOPB and LPV324MX/NOPB are direct replacements manufactured by Texas Instruments with identical electrical performance to the LPV324DRE4. Both maintain the same slew rate (0.1 V/µs), gain bandwidth product (152 kHz), input bias current (2 nA), and supply current (28 µA). The primary difference is packaging format: LPV324M/NOPB is supplied in Tube packaging, while LPV324MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Both are active products with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and regulatory compliance.

Category 2: Enhanced Performance Replacements (Active Status, Improved Specifications)

LMV324M/NOPB and LMV324MX/NOPB are Texas Instruments products offering superior performance characteristics while maintaining the same 14-SOIC package footprint. These devices provide 10× higher slew rate (1 V/µs vs. 0.1 V/µs), 4× higher gain bandwidth product (1 MHz vs. 237 kHz), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). Supply current increases to 410 µA, and output current capability increases to 160 mA per channel. These specifications make LMV324M/NOPB and LMV324MX/NOPB suitable for applications requiring faster transient response and wider temperature operation. Both are active products with ROHS3 compliance.

Category 3: Alternative Manufacturer Replacements (Active Status)

MCP6484-E/SL (Microchip Technology) is a general purpose amplifier offering the highest performance among substitutes with 2.7 V/µs slew rate and 4 MHz gain bandwidth product. This device maintains the 14-SOIC package and rail-to-rail output configuration. Supply voltage range extends to 2.2 V minimum, and operating temperature extends to 125°C. Input bias current is reduced to 1 pA (picoampere level). This device is suitable for applications requiring maximum bandwidth and lowest input bias current within the 14-SOIC form factor.

LMR934F-GE2 (Rohm Semiconductor) provides a compromise between the LPV324DRE4 and higher-performance alternatives. It offers 0.35 V/µs slew rate and 1.4 MHz gain bandwidth product with 5 nA input bias current. The package is 14-SOP with 0.173" (4.40mm) width, which may require PCB layout verification for compatibility. Supply voltage range is 1.8 V to 5 V, and operating temperature is -40°C to 85°C.

LMV324AM14X (onsemi) is classified as obsolete but remains available in inventory. It provides 1.5 V/µs slew rate and 1.4 MHz gain bandwidth product with 1 nA input bias current. Operating temperature extends to 125°C. This device is suitable only if long-term availability is not a concern.

Compliance and Certification Status:

All recommended substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and long-term storage requirements. All devices are classified as EAR99 for export control purposes and carry REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q1: Can LMV324M/NOPB or LMV324MX/NOPB be used as direct drop-in replacements for LPV324DRE4?

A: Yes, LMV324M/NOPB and LMV324MX/NOPB are pin-compatible direct replacements in the 14-SOIC package. Both devices are manufactured by Texas Instruments and maintain rail-to-rail output configuration with 4 circuits. The primary differences are performance enhancements: 10× higher slew rate, 4× higher gain bandwidth product, and extended operating temperature range to 125°C. These improvements are backward-compatible with designs specified for LPV324DRE4, as the substitute devices exceed or match all minimum performance requirements.

Q2: What is the key difference between LPV324MX/NOPB and LMV324MX/NOPB?

A: Both devices are manufactured by Texas Instruments in identical 14-SOIC packages with Cut Tape (CT) & Digi-Reel® packaging. The LPV324MX/NOPB maintains the original LPV324 performance specifications (0.1 V/µs slew rate, 152 kHz gain bandwidth product, 28 µA supply current). The LMV324MX/NOPB is an enhanced version with 1 V/µs slew rate, 1 MHz gain bandwidth product, and 410 µA supply current. Selection depends on application requirements: use LPV324MX/NOPB for low-power, low-speed applications; use LMV324MX/NOPB for applications requiring faster response and higher output current capability.

Q3: Is the LMR934F-GE2 package compatible with LPV324DRE4 PCB layouts?

A: LMR934F-GE2 uses a 14-SOP package with 0.173" (4.40mm) width, compared to the LPV324DRE4 14-SOIC package with 0.154" (3.90mm) width. The wider package may not fit existing PCB footprints designed for the narrower SOIC package. PCB layout verification is required before substitution. If package compatibility is critical, use LPV324M/NOPB, LPV324MX/NOPB, LMV324M/NOPB, or LMV324MX/NOPB, which all maintain the 0.154" (3.90mm) width specification.

Q4: What are the supply current implications when substituting with LMV324M/NOPB or LMV324MX/NOPB?

A: The LPV324DRE4 draws 28 µA total supply current (7 µA per channel × 4 channels). The LMV324M/NOPB and LMV324MX/NOPB draw 410 µA total supply current (102.5 µA per channel × 4 channels). This represents a 14.6× increase in supply current consumption. For battery-powered applications or designs with strict power budgets, this increase may be significant. If low power consumption is critical, retain LPV324MX/NOPB or LPV324M/NOPB as the preferred substitute.

Q5: Can MCP6484-E/SL be used in applications designed for LPV324DRE4?

A: MCP6484-E/SL is functionally compatible as a 4-circuit rail-to-rail amplifier in 14-SOIC package. However, performance characteristics differ significantly: MCP6484-E/SL provides 2.7 V/µs slew rate (27× faster), 4 MHz gain bandwidth product (16.9× higher), and 1 pA input bias current (2000× lower). These performance enhancements are backward-compatible with LPV324DRE4 designs. Supply current is 240 µA (8.6× higher than LPV324DRE4). Substitution is valid for applications where higher performance does not create stability or noise issues in the circuit design.

Q6: What is the significance of the extended operating temperature range in LMV324M/NOPB and LMV324MX/NOPB?

A: The LPV324DRE4 operates from -40°C to 85°C. The LMV324M/NOPB and LMV324MX/NOPB extend the upper operating temperature to 125°C. This extended range is beneficial for applications in high-temperature environments, automotive applications, or industrial equipment where ambient temperatures may exceed 85°C. If the application operates within the -40°C to 85°C range, the extended temperature capability provides additional design margin and reliability headroom.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed in this document are ROHS3 compliant. This includes LPV324M/NOPB, LPV324MX/NOPB, LMV324M/NOPB, LMV324MX/NOPB, LMR934F-GE2, MCP6484-E/SL, and LMV324AM14X. RoHS3 compliance ensures compatibility with current manufacturing standards and regulatory requirements in the European Union and other regions with similar environmental regulations.

Q8: What is the difference between Tube and Cut Tape (CT) & Digi-Reel® packaging formats?

A: Tube packaging supplies components in plastic tubes, typically containing 25 or 50 units per tube, suitable for manual assembly or small-volume production. Cut Tape (CT) & Digi-Reel® packaging supplies components on continuous tape with individual component spacing, suitable for automated pick-and-place assembly equipment. Both formats contain identical components; the difference is in handling and assembly process compatibility. Select Tube format for manual assembly or low-volume applications; select Cut Tape & Digi-Reel® format for automated assembly lines.

Q9: Why is LMV324AM14X listed as obsolete despite being available in inventory?

A: LMV324AM14X is manufactured by onsemi and classified as obsolete, meaning the manufacturer has discontinued active production and support. Although 10,898 units are currently in stock, future availability is not guaranteed. For new designs or long-term production requirements, use active products such as LMV324M/NOPB, LMV324MX/NOPB, or LPV324MX/NOPB to ensure supply chain continuity.

Q10: What is the MSL (Moisture Sensitivity Level) rating and why is it important?

A: All substitute parts carry MSL 1 (Unlimited) rating, identical to the LPV324DRE4. MSL 1 indicates unlimited shelf life without moisture control requirements. Components with higher MSL ratings (2, 3, 4, 5, or 5a) require controlled storage conditions and have limited shelf life after opening. MSL 1 rating ensures compatibility with standard warehouse storage and manufacturing processes without special moisture-control equipment or procedures.

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