LPV324IDG4 Equivalent & Substitute Parts

Part Overview

The LPV324IDG4 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 equivalent and substitute components for ongoing design support and production continuity. The LPV324IDG4 operates across a 2.7V to 5V 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.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324IDG4	—
Manufacturer	Texas Instruments	—
Product Status	Obsolete	—
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 (x4 Channels)	28	µA
Current - Output / Channel	72	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40°C ~ 125°C	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324IDG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 4 (quad configuration required)
Output type: Rail-to-rail operation
Package compatibility: 14-SOIC surface mount form factor
Supply voltage range: Minimum 2.7V, maximum 5V or higher
Operating temperature range: -40°C to 125°C or compatible range
Mounting type: Surface mount

Secondary Compatibility Factors:

Input bias current: 2 nA baseline (substitutes may vary)
Input offset voltage: 1.5 mV baseline (substitutes may vary)
Slew rate: 0.1 V/µs baseline (substitutes may have higher performance)
Gain bandwidth product: 237 kHz baseline (substitutes may have higher performance)
Current supply and output specifications: Must support application requirements

Substitute parts are grouped into two categories:

Category A - Direct Replacements (Same Base Product Line): LMV324M/NOPB, LMV324MX/NOPB, LPV324M/NOPB, and LPV324MX/NOPB maintain the same electrical characteristics as the LPV324IDG4 or offer enhanced performance within compatible supply and temperature ranges. These parts share the same base product number (LMV324 or LPV324) and are available in active product status.

Category B - Functional Equivalents (Alternative Manufacturers): LMR934F-GE2 (Rohm Semiconductor), LMV324AM14X (onsemi), MCP6484-E/SL and MCP6474T-E/SL (Microchip Technology), and BU7487F-E2 (Rohm Semiconductor) provide quad operational amplifier configurations with rail-to-rail output in 14-SOIC packaging. These parts meet the core functional requirements but may exhibit different electrical performance characteristics.

Parameter Comparison

Parameter	LPV324IDG4	LMV324M/NOPB	LMV324MX/NOPB	LPV324M/NOPB	LPV324MX/NOPB	LMR934F-GE2	LMV324AM14X	MCP6484-E/SL	MCP6474T-E/SL	BU7487F-E2
Manufacturer	TI	TI	TI	TI	TI	Rohm	onsemi	Microchip	Microchip	Rohm
Product Status	Obsolete	Active	Active	Active	Active	Active	Obsolete	Active	Active	Active
Number of Circuits	4	4	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS
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 (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (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	1	1	0.1	0.1	0.35	1.5	2.7	1.1	10
Gain Bandwidth Product (kHz)	237	1000	1000	152	152	1400	1400	4000	2000	10000
Current - Input Bias (nA)	2	15	15	2	2	5	1	1	1	0.001
Voltage - Input Offset (mV)	1.5	1.7	1.7	1.5	1.5	1	1	1.5	1.5	1
Current - Supply (µA)	28	410	410	28	28	250	100	240	100	6000
Current - Output / Channel (mA)	72	160	160	16	16	90	34	12	32	12
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	1.8	2.7	2.2	2	3
Voltage - Supply Span Max (V)	5	5.5	5.5	5	5	5	5.5	5.5	5.5	5.5
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	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 with Active Product Status:

LMV324MX/NOPB and LMV324M/NOPB are recommended as primary substitutes. Both are manufactured by Texas Instruments and maintain active product status. These parts operate within the same 2.7V to 5.5V supply range and support the full -40°C to 125°C operating temperature span. The LMV324MX/NOPB variant offers superior inventory availability (177,800 units) in Cut Tape and Digi-Reel packaging, making it suitable for high-volume production. Both parts provide enhanced slew rate (1 V/µs) and gain bandwidth product (1 MHz) compared to the LPV324IDG4, delivering improved dynamic performance while maintaining rail-to-rail output capability.

For Low-Power Applications with Identical Electrical Characteristics:

LPV324M/NOPB and LPV324MX/NOPB preserve the exact electrical specifications of the LPV324IDG4, including 0.1 V/µs slew rate, 152 kHz gain bandwidth product, and 28 µA supply current. These parts are suitable for applications where the original performance envelope must be maintained. However, operating temperature range is limited to -40°C to 85°C, which may restrict use in extended temperature applications. LPV324MX/NOPB provides higher inventory (10,400 units) in Cut Tape packaging.

For Enhanced Performance Requirements:

MCP6484-E/SL (Microchip Technology) delivers significantly higher slew rate (2.7 V/µs) and gain bandwidth product (4 MHz) while maintaining 14-SOIC packaging and active product status. This part supports supply voltages from 2.2V to 5.5V and operates across -40°C to 125°C. The lower input bias current (1 pA) and reduced output current per channel (12 mA) may require circuit design verification for applications originally specified for the LPV324IDG4.

For CMOS Technology Applications:

BU7487F-E2 (Rohm Semiconductor) and MCP6474T-E/SL (Microchip Technology) provide CMOS amplifier configurations with superior input bias current characteristics (1 pA). BU7487F-E2 offers exceptional slew rate (10 V/µs) and gain bandwidth product (10 MHz), suitable for high-speed signal processing. MCP6474T-E/SL provides moderate performance enhancement (1.1 V/µs slew rate, 2 MHz bandwidth) with lower supply current (100 µA). Both maintain 14-SOIC packaging and active product status.

Compliance and Regulatory Considerations:

All substitute parts listed are ROHS3 compliant and carry MSL rating of 1 (Unlimited), matching the environmental and handling requirements of the LPV324IDG4. All parts are classified under HTSUS code 8542.33.0001 and ECCN EAR99, maintaining regulatory consistency with the original component.

Frequently Asked Questions (FAQ)

Q1: Can LMV324MX/NOPB be used as a direct drop-in replacement for LPV324IDG4?

A: LMV324MX/NOPB is mechanically and electrically compatible with LPV324IDG4 in terms of pinout, package footprint (14-SOIC, 0.154" width), and supply voltage range (2.7V to 5.5V). However, LMV324MX/NOPB exhibits enhanced electrical performance: slew rate of 1 V/µs versus 0.1 V/µs, and gain bandwidth product of 1 MHz versus 237 kHz. For applications sensitive to these performance differences, circuit simulation or bench testing is necessary to confirm functional equivalence. Both parts support the full -40°C to 125°C operating temperature range.

Q2: What is the difference between LPV324M/NOPB and LMV324M/NOPB?

A: LPV324M/NOPB and LMV324M/NOPB are distinct product lines from Texas Instruments. LPV324M/NOPB maintains the original LPV324IDG4 electrical specifications (0.1 V/µs slew rate, 152 kHz bandwidth, 28 µA supply current) but operates only to 85°C maximum. LMV324M/NOPB provides enhanced performance (1 V/µs slew rate, 1 MHz bandwidth) and extends operating temperature to 125°C. Selection depends on whether the application requires the original performance envelope or can benefit from enhanced specifications.

Q3: Are there package compatibility issues when substituting with LMR934F-GE2 or BU7487F-E2?

A: LMR934F-GE2 and BU7487F-E2 use 14-SOIC packaging with 0.173" width (4.40mm) compared to the LPV324IDG4 standard 0.154" width (3.90mm). This dimensional difference may require PCB layout verification, particularly in high-density designs. Pin configuration remains compatible (14-pin SOIC), but physical board spacing must be confirmed before production implementation.

Q4: Which substitute part offers the lowest power consumption?

A: LPV324M/NOPB and LPV324MX/NOPB maintain the original 28 µA supply current specification, providing the lowest power consumption among all substitutes. For applications where power budget is critical, these parts are preferred. MCP6484-E/SL offers moderate consumption at 240 µA, while BU7487F-E2 consumes 6 mA, making it unsuitable for ultra-low-power designs.

Q5: Can MCP6474T-E/SL replace LPV324IDG4 in precision analog applications?

A: MCP6474T-E/SL is a CMOS amplifier with 1 pA input bias current and 1.5 mV input offset voltage, meeting the precision requirements of the LPV324IDG4. However, slew rate is 1.1 V/µs and gain bandwidth product is 2 MHz, both significantly higher than the original 0.1 V/µs and 237 kHz. For precision DC applications with low-frequency signals, this substitution is viable. For applications requiring the original bandwidth characteristics, verification testing is required.

Q6: What is the inventory status of recommended substitutes?

A: LMV324MX/NOPB offers the highest inventory availability at 177,800 units in Cut Tape and Digi-Reel packaging, ensuring supply continuity. LMV324M/NOPB provides 2,202 units in Tube packaging. LPV324MX/NOPB offers 10,400 units in Cut Tape packaging. MCP6484-E/SL and MCP6474T-E/SL provide 2,200 and 6,400 units respectively. For production planning, LMV324MX/NOPB is the most readily available option.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed (LMV324M/NOPB, LMV324MX/NOPB, LPV324M/NOPB, LPV324MX/NOPB, LMR934F-GE2, LMV324AM14X, MCP6484-E/SL, MCP6474T-E/SL, and BU7487F-E2) are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental compliance of the LPV324IDG4.

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