LPV324IPW Equivalent & Substitute Parts

Part Overview

The LPV324IPW is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-TSSOP surface-mount package. This device is classified as obsolete, though 1,382 pieces remain in current inventory. The LPV324IPW operates across a 2.7V to 5V supply range with rail-to-rail output capability, making it suitable for low-power analog signal processing applications.

Due to its obsolete product status, identifying equivalent and substitute parts is necessary for design continuity, long-term supply chain reliability, and new production planning. Active alternatives with comparable or enhanced electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
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 125	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324IPW is determined by the following critical parameters:

Primary Compatibility Criteria:

Four independent operational amplifier circuits
Rail-to-rail output configuration
14-TSSOP surface-mount package
Supply voltage range compatibility (minimum 2.7V, maximum 5V or higher)
Operating temperature range (-40°C minimum, 125°C or higher maximum)

Secondary Performance Criteria:

Slew rate (0.1V/µs baseline; higher values acceptable for enhanced performance)
Gain bandwidth product (237 kHz baseline; higher values acceptable)
Input bias current (2 nA baseline; lower values preferred)
Input offset voltage (1.5 mV baseline; comparable or lower values acceptable)
Supply current per channel (28µA baseline; higher values acceptable within application constraints)
Output current per channel (72 mA baseline; higher values acceptable)

Substitute parts are grouped into two categories:

Category A: Direct Replacements (Texas Instruments LMV324 Series) These parts maintain the LPV324 base product number lineage with enhanced electrical performance and active product status. They feature identical package geometry and pinout compatibility.

Category B: Cross-Manufacturer Alternatives These parts from Rohm Semiconductor and Microchip Technology meet the core functional requirements (4-circuit, rail-to-rail, 14-TSSOP) with varying electrical characteristics. Selection depends on specific application performance requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Package
LPV324IPW	Texas Instruments	Obsolete	0.1	237	2	1.5	28	72	-40 to 125	14-TSSOP
LMV324MT/NOPB	Texas Instruments	Active	1	1000	15	1.7	410	160	-40 to 125	14-TSSOP
LMV324MTX/NOPB	Texas Instruments	Active	1	1000	15	1.7	410	160	-40 to 125	14-TSSOP
LPV324MT/NOPB	Texas Instruments	Active	0.1	152	2	1.5	28	16	-40 to 85	14-TSSOP
LPV324MTX/NOPB	Texas Instruments	Active	0.1	152	2	1.5	28	16	-40 to 85	14-TSSOP
BD12734FVJ-E2	Rohm Semiconductor	Active	0.4	1000	50	1	1200	12	-40 to 85	14-TSSOP
BU7487FV-E2	Rohm Semiconductor	Active	10	10000	0.001	1	6000	12	-40 to 105	14-LSSOP
BU7487SFV-E2	Rohm Semiconductor	Active	10	10000	0.001	1	6000	12	-40 to 105	14-LSSOP
LMR344FVJ-E2	Rohm Semiconductor	Active	1	2000	0.001	0.25	400	113	-40 to 85	14-TSSOP
LMR934FVJ-E2	Rohm Semiconductor	Active	0.35	1400	5	1	250	90	-40 to 85	14-TSSOP
MCP6474-E/ST	Microchip Technology	Active	1.1	2000	0.001	1.5	100	32	-40 to 125	14-TSSOP

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance:

Select LMV324MT/NOPB or LMV324MTX/NOPB when the application can tolerate increased supply current (410µA vs. 28µA) and higher input bias current (15nA vs. 2nA). These parts offer significantly improved slew rate (1V/µs vs. 0.1V/µs) and gain bandwidth product (1MHz vs. 237kHz), with identical operating temperature range (-40°C to 125°C). Both parts maintain ROHS3 compliance and MSL-1 moisture sensitivity rating. The primary difference is packaging: MT/NOPB uses Tube packaging, while MTX/NOPB uses Tape & Reel. Inventory availability is 2,200 and 10,300 pieces respectively.

For Pin-Compatible Replacement with Identical Electrical Characteristics:

Select LPV324MT/NOPB or LPV324MTX/NOPB when maintaining the exact electrical profile of the LPV324IPW is required. These parts preserve the 0.1V/µs slew rate, 2nA input bias current, and 28µA supply current. The trade-off is reduced operating temperature maximum (85°C vs. 125°C) and lower output current per channel (16mA vs. 72mA). Both maintain ROHS3 compliance and MSL-1 rating. Inventory availability is 988 and 10,300 pieces respectively.

For Cross-Manufacturer Alternatives:

LMR934FVJ-E2 (Rohm Semiconductor): Offers moderate performance enhancement with 0.35V/µs slew rate and 1.4MHz gain bandwidth product. Input bias current is 5nA. Operating temperature range is -40°C to 85°C. Suitable for applications requiring improved performance without extreme supply current demands (250µA). Inventory: 3,126 pieces.
LMR344FVJ-E2 (Rohm Semiconductor): Provides CMOS-level input bias current (1pA) with 1V/µs slew rate and 2MHz gain bandwidth product. Operating temperature range is -40°C to 85°C. Supply current is 400µA. Inventory: 870 pieces.
MCP6474-E/ST (Microchip Technology): CMOS amplifier with 1pA input bias current, 1.1V/µs slew rate, and 2MHz gain bandwidth product. Maintains full operating temperature range (-40°C to 125°C). Supply current is 100µA per channel. Inventory: 3,611 pieces.
BU7487FV-E2 or BU7487SFV-E2 (Rohm Semiconductor): High-performance CMOS alternatives with 10V/µs slew rate and 10MHz gain bandwidth product. Input bias current is 1pA. Operating temperature range extends to 105°C. Note: Package is 14-LSSOP rather than 14-TSSOP; verify PCB layout compatibility. Inventory: 7,900 and 961 pieces respectively.

All substitute parts maintain ROHS3 compliance, MSL-1 or MSL-2 moisture sensitivity ratings, and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LPV324IPW with LMV324MT/NOPB without circuit modifications?

A: Electrical substitution is possible due to identical pinout and package geometry (14-TSSOP). However, the LMV324MT/NOPB exhibits significantly different electrical characteristics: 10× higher slew rate, 4× higher gain bandwidth product, 7.5× higher input bias current, and 14.6× higher supply current per channel. Circuit performance will change. Verify that your application tolerates these differences, particularly the increased supply current draw and higher input bias current, which may affect precision analog circuits.

Q2: What is the difference between LMV324MT/NOPB and LMV324MTX/NOPB?

A: Both parts are electrically identical with the same performance specifications. The difference is packaging: MT/NOPB is supplied in Tube packaging, while MTX/NOPB is supplied in Tape & Reel (TR) format. MTX/NOPB also has MSL-2 (1 Year) moisture sensitivity versus MSL-1 (Unlimited) for MT/NOPB. Select based on your assembly process requirements and moisture exposure conditions.

Q3: Why would I choose LPV324MT/NOPB over LMV324MT/NOPB?

A: Select LPV324MT/NOPB when your application requires the exact electrical characteristics of the original LPV324IPW: ultra-low supply current (28µA), low input bias current (2nA), and low slew rate (0.1V/µs). This is critical for battery-powered or ultra-low-power applications where the LMV324's higher supply current (410µA) would be unacceptable. The trade-off is reduced maximum operating temperature (85°C vs. 125°C) and lower output current capability (16mA vs. 72mA).

Q4: Are BU7487FV-E2 and BU7487SFV-E2 pin-compatible with LPV324IPW?

A: Both parts have identical pinout and are housed in 14-pin surface-mount packages. However, the package designation differs: BU7487 uses 14-LSSOP (Leadless Small-Outline Package) while LPV324IPW uses 14-TSSOP (Thin Shrink Small-Outline Package). Although both are 0.173" wide with 4.40mm width, the physical footprint and solder pad layout may differ. Verify PCB layout compatibility before substitution. These parts are CMOS amplifiers with dramatically higher performance (10V/µs slew rate, 10MHz gain bandwidth product) suitable for high-speed applications.

Q5: What does "Rail-to-Rail" output mean, and do all substitutes maintain this feature?

A: Rail-to-rail output means the amplifier can swing its output voltage to within a small margin of both the positive and negative supply rails. All listed substitute parts maintain rail-to-rail output capability, ensuring compatibility with low-voltage supply applications. This feature is essential for maximizing signal swing in battery-powered or low-voltage systems.

Q6: Which substitute part has the lowest input bias current?

A: BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, and MCP6474-E/ST all feature 1 picoampere (pA) input bias current, which is 2,000× lower than the LPV324IPW's 2 nanoampere (nA) specification. This ultra-low bias current is characteristic of CMOS input stage amplifiers and is beneficial for high-impedance signal sources and precision instrumentation applications.

Q7: Can I use MCP6474-E/ST as a direct replacement?

A: MCP6474-E/ST is electrically compatible and maintains the full operating temperature range (-40°C to 125°C) of the original LPV324IPW. It offers superior performance with 1.1V/µs slew rate, 2MHz gain bandwidth product, and 1pA input bias current. However, supply current is 100µA per channel (3.6× higher than LPV324IPW). The 14-TSSOP package is identical. This is an excellent choice for applications where improved performance and extended temperature range justify the increased power consumption.

Q8: What is the significance of the "Obsolete" product status for LPV324IPW?

A: Obsolete status indicates that Texas Instruments has discontinued active production and support for this part. While 1,382 pieces remain in current inventory, long-term availability cannot be guaranteed. For new designs or production planning beyond current stock levels, selecting an active substitute part (all listed alternatives have "Active" status) ensures continued supply chain access and manufacturer support.

Q9: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, meeting the Restriction of Hazardous Substances Directive requirements. This ensures compatibility with modern manufacturing standards and environmental regulations.

Q10: Which substitute offers the best balance of performance and low power consumption?

A: LMR934FVJ-E2 provides an optimal balance: 0.35V/µs slew rate (3.5× improvement over LPV324IPW), 1.4MHz gain bandwidth product (5.9× improvement), and 250µA supply current (8.9× higher than LPV324IPW but significantly lower than LMV324 series at 410µA). Input bias current is 5nA, and operating temperature range is -40°C to 85°C. This part is suitable for applications requiring moderate performance enhancement without extreme power consumption.

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