LPV324DG4 Equivalent & Substitute Parts

Part Overview

The LPV324DG4 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 procurement continuity. The LPV324DG4 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	LPV324DG4	—
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 LPV324DG4 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 2.7V, maximum 5V or higher
Operating temperature range: -40°C to 85°C or wider
Amplifier type: General purpose or CMOS
Mounting type: Surface mount

Secondary Performance Criteria:

Slew rate: 0.1V/µs or higher
Gain bandwidth product: 237 kHz or higher
Input bias current: 2 nA or lower
Input offset voltage: 1.5 mV or lower
Supply current: 28µA or lower per channel
Output current per channel: 16 mA or higher

Substitute parts are grouped into two categories: direct pin-compatible replacements (same base product number or identical pinout) and functional equivalents (different manufacturers or product lines with compatible electrical and mechanical specifications).

Parameter Comparison

Parameter	LPV324DG4	LPV324M/NOPB	LPV324MX/NOPB	LMV324M/NOPB	LMV324MX/NOPB	MCP6484-E/SL	LMR934F-GE2	LMV324AM14X
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Rohm Semiconductor	onsemi
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Obsolete
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 (0.154", 3.90mm)	14-SOIC (0.173", 4.40mm)	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	2.7	0.35	1.5
Gain Bandwidth Product (kHz)	237	152	152	1000	1000	4000	1400	1400
Current - Input Bias (nA)	2	2	2	15	15	1	5	1
Voltage - Input Offset (mV)	1.5	1.5	1.5	1.7	1.7	1.5	1	1
Current - Supply (µA x4 Channels)	28	28	28	410	410	240	250	100
Current - Output / Channel (mA)	72	16	16	160	160	12	90	34
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	2.2	1.8	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 125	-40 to 85	-40 to 125
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Tier 1: Direct Replacements (Recommended for Obsolescence Mitigation)

LPV324M/NOPB and LPV324MX/NOPB are direct functional replacements manufactured by Texas Instruments under the same base product number (LPV324). Both maintain identical electrical specifications to the LPV324DG4, including slew rate (0.1V/µs), gain bandwidth product (152 kHz), input bias current (2 nA), and supply current (28µA per channel). These parts are currently in active production status with substantial inventory availability (1,387 and 10,400 units respectively). The primary difference is packaging format: LPV324M/NOPB is supplied in tube packaging, while LPV324MX/NOPB is supplied in cut tape and digi-reel format. Both are ROHS3 compliant with MSL 1 rating and maintain the same operating temperature range (-40°C to 85°C) and supply voltage specifications (2.7V to 5V) as the original part.

Tier 2: Enhanced Performance Alternatives (For Applications Requiring Higher Bandwidth)

LMV324M/NOPB and LMV324MX/NOPB are Texas Instruments alternatives offering improved performance characteristics. These parts provide 10x higher gain bandwidth product (1 MHz versus 237 kHz), faster slew rate (1V/µs versus 0.1V/µs), and extended operating temperature range (-40°C to 125°C). Supply voltage range is expanded to 5.5V maximum. However, supply current increases to 410µA per channel and output current per channel increases to 160 mA. These parts are suitable for applications where higher frequency response is required. LMV324MX/NOPB has significantly higher inventory (177,800 units) compared to LMV324M/NOPB (2,202 units).

Tier 3: Cross-Manufacturer Alternatives

MCP6484-E/SL (Microchip Technology) provides the highest gain bandwidth product (4 MHz) and slew rate (2.7V/µs) among all substitutes, with CMOS input stage offering 1 pA input bias current. This part is suitable for precision applications requiring minimal input current. Supply voltage range extends to 2.2V minimum and 5.5V maximum. Operating temperature range is -40°C to 125°C. Supply current is 240µA per channel.

LMR934F-GE2 (Rohm Semiconductor) offers moderate performance enhancement with 1.4 MHz gain bandwidth product and 0.35V/µs slew rate. This part features the lowest minimum supply voltage (1.8V) among all substitutes, enabling operation in ultra-low-power applications. Package width is 4.40mm (0.173") versus 3.90mm for the original part, requiring PCB layout verification.

LMV324AM14X (onsemi) is classified as obsolete but remains available with 10,898 units in stock. This part provides 1.4 MHz gain bandwidth product and 1.5V/µs slew rate with extended temperature range (-40°C to 125°C) and expanded supply voltage (5.5V maximum). Input bias current is 1 nA with 1 mV input offset voltage.

Compliance and Certification Status

All substitute parts listed are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) rating, matching the original LPV324DG4 specifications. All parts carry EAR99 ECCN classification and REACH unaffected status. Selection should prioritize active production status parts (Tier 1 and Tier 2) for long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q1: Can LPV324MX/NOPB be used as a direct replacement for LPV324DG4 without circuit modification?

A: Yes. LPV324MX/NOPB is a direct pin-compatible replacement with identical electrical specifications. The 14-SOIC package dimensions (0.154" width, 3.90mm) are identical. No circuit modifications are required. The primary difference is packaging format (cut tape and digi-reel versus the original format). Verify PCB footprint compatibility before assembly.

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

A: Both are Texas Instruments quad operational amplifiers in 14-SOIC packages, but they differ significantly in performance. LPV324M/NOPB maintains the original LPV324DG4 specifications with 0.1V/µs slew rate and 152 kHz gain bandwidth product. LMV324M/NOPB provides enhanced performance with 1V/µs slew rate and 1 MHz gain bandwidth product, but at the cost of higher supply current (410µA versus 28µA per channel). Select LPV324M/NOPB for low-power applications and LMV324M/NOPB for higher-frequency signal processing.

Q3: Is MCP6484-E/SL suitable for applications requiring minimal input bias current?

A: Yes. MCP6484-E/SL features a CMOS input stage with 1 pA input bias current, compared to 2 nA for the LPV324DG4. This makes it suitable for high-impedance signal sources and precision measurement applications. However, supply current is higher (240µA per channel), and output current per channel is lower (12 mA versus 72 mA for the original part). Verify output drive capability requirements before selection.

Q4: Can LMR934F-GE2 be used in place of LPV324DG4 on existing PCBs?

A: LMR934F-GE2 has a different package width (0.173" or 4.40mm versus 0.154" or 3.90mm for the original part). While the 14-SOIC pinout is compatible, the physical dimensions differ. PCB footprint verification is required. If the PCB footprint accommodates the wider package, electrical compatibility is confirmed. LMR934F-GE2 offers lower minimum supply voltage (1.8V) and moderate performance enhancement (1.4 MHz gain bandwidth product).

Q5: What is the inventory status of substitute parts?

A: LPV324MX/NOPB has the highest inventory among direct replacements (10,400 units). LMV324MX/NOPB has the highest overall inventory (177,800 units) among all substitutes. LPV324M/NOPB has 1,387 units available. For long-term procurement, LMV324MX/NOPB is recommended due to active production status and substantial stock levels.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (unlimited) rating, matching the original LPV324DG4 specifications. All parts carry EAR99 ECCN classification and REACH unaffected status, confirming regulatory compliance for industrial and commercial applications.

Q7: Which substitute part offers the best balance of performance and power consumption?

A: LMV324AM14X (onsemi) provides a balanced profile with 1.4 MHz gain bandwidth product, 1.5V/µs slew rate, and moderate supply current (100µA per channel). This part offers 3.5x performance improvement over the original LPV324DG4 while maintaining reasonable power consumption. However, this part is classified as obsolete. For active production alternatives, LMR934F-GE2 offers similar performance with lower minimum supply voltage (1.8V).

Q8: What are the operating temperature range implications for substitute selection?

A: The original LPV324DG4 operates from -40°C to 85°C. LPV324M/NOPB and LPV324MX/NOPB maintain this range. LMV324M/NOPB, LMV324MX/NOPB, MCP6484-E/SL, and LMV324AM14X extend the range to -40°C to 125°C, providing wider environmental compatibility. LMR934F-GE2 maintains -40°C to 85°C. Select extended-range parts for applications requiring operation above 85°C.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message