LPV324IPWRE4 Equivalent & Substitute Parts

Part Overview

The LPV324IPWRE4 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, with 1,044 units currently in stock. The LPV324IPWRE4 provides rail-to-rail output capability with low power consumption, making it suitable for battery-powered and low-voltage applications requiring multiple amplifier channels.

Due to its obsolete product status, identifying equivalent and substitute parts is necessary to ensure long-term design continuity, supply chain reliability, and access to active production alternatives. Active substitute parts maintain functional compatibility while offering improved performance characteristics or extended availability.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the LPV324IPWRE4 is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 14-TSSOP surface-mount package with 0.173" width and 4.40mm pitch
Mounting type: Surface mount
Pin count and footprint must match for direct PCB compatibility

Electrical Compatibility:

Number of circuits: Four independent amplifier channels
Output type: Rail-to-rail capability
Supply voltage range: Minimum 2.7V, maximum 5V (or higher)
Operating temperature range: -40°C to 125°C or -40°C to 85°C
Input bias current: Low-current specification (nanoampere range)
Input offset voltage: Approximately 1.5mV or lower

Regulatory Compliance:

RoHS3 compliance required
MSL rating of 1 (unlimited moisture sensitivity)
REACH unaffected status

Substitute parts are grouped into two categories: Texas Instruments LMV324 series (active status, enhanced performance) and alternative manufacturer options (Rohm Semiconductor, Microchip Technology) that maintain electrical and mechanical compatibility within the specified parameter ranges.

Parameter Comparison

Parameter	LPV324IPWRE4	LMV324MT/NOPB	LMV324MTX/NOPB	LPV324MT/NOPB	LPV324MTX/NOPB	BD12734FVJ-E2	BU7487FV-E2	BU7487SFV-E2	LMR344FVJ-E2	LMR934FVJ-E2	MCP6474-E/ST
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Microchip Technology
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	CMOS	General Purpose	CMOS
Number of Circuits	4	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	Rail-to-Rail
Slew Rate (V/µs)	0.1	1	1	0.1	0.1	0.4	10	10	1	0.35	1.1
Gain Bandwidth Product (kHz)	237	1000	1000	152	152	1000	10000	10000	2000	1400	2000
Current - Input Bias (nA)	2	15	15	2	2	50	0.001	0.001	0.001	5	0.001
Voltage - Input Offset (mV)	1.5	1.7	1.7	1.5	1.5	1	1	1	0.25	1	1.5
Current - Supply (µA)	28	410	410	28	28	1200	6000	6000	400	250	100
Current - Output / Channel (mA)	72	160	160	16	16	12	12	12	113	90	32
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	1.8	3	3	2.7	1.8	2
Voltage - Supply Span Max (V)	5	5.5	5.5	5	5	5	5.5	5.5	5.5	5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 105	-40 to 105	-40 to 85	-40 to 85	-40 to 125
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-LSSOP	14-LSSOP	14-TSSOP	14-TSSOP	14-TSSOP
RoHS Status	ROHS3 Compliant	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)	1 (Unlimited)
Inventory Status	1044 Pcs	2200 Pcs	1795 Pcs	988 Pcs	10300 Pcs	906 Pcs	7900 Pcs	961 Pcs	870 Pcs	3126 Pcs	3611 Pcs

Engineering Selection Recommendations

Primary Recommendation: LPV324MT/NOPB or LPV324MTX/NOPB

The LPV324MT/NOPB and LPV324MTX/NOPB are the closest functional equivalents to the LPV324IPWRE4. Both parts maintain identical electrical specifications (0.1V/µs slew rate, 152kHz gain bandwidth product, 2nA input bias current, 1.5mV input offset voltage) and operate within the same 2.7V to 5V supply range. These parts are manufactured by Texas Instruments and carry active product status, ensuring long-term availability. The primary difference is packaging: LPV324MT/NOPB is supplied in Tube packaging, while LPV324MTX/NOPB is supplied in Tape & Reel format with significantly higher inventory (10,300 units). Both are ROHS3 compliant with MSL rating of 1 (unlimited). The LPV324MTX/NOPB is preferred for high-volume production due to superior stock availability.

Secondary Recommendation: LMV324MT/NOPB or LMV324MTX/NOPB

The LMV324 series represents an enhanced alternative within the Texas Instruments portfolio. These parts offer improved performance characteristics: 1V/µs slew rate (10× faster), 1MHz gain bandwidth product (4.2× higher), and extended maximum supply voltage to 5.5V. Input bias current increases to 15nA and input offset voltage to 1.7mV, representing acceptable trade-offs for applications requiring higher bandwidth. Operating temperature range extends to 125°C. Both parts are active status with ROHS3 compliance. LMV324MTX/NOPB provides superior inventory availability (1,795 units in Tape & Reel format).

Alternative Manufacturer Options:

LMR934FVJ-E2 (Rohm Semiconductor): General-purpose amplifier with 0.35V/µs slew rate and 1.4MHz gain bandwidth product. Supports extended supply voltage range (1.8V to 5V) and maintains 5nA input bias current. Inventory: 3,126 units. Suitable for applications requiring lower minimum supply voltage.

BD12734FVJ-E2 (Rohm Semiconductor): General-purpose amplifier with 0.4V/µs slew rate and 1MHz gain bandwidth product. Supports extended supply voltage range (1.8V to 5V). Inventory: 906 units. Suitable for low-voltage applications.

MCP6474-E/ST (Microchip Technology): CMOS amplifier with 1.1V/µs slew rate and 2MHz gain bandwidth product. Supports extended supply voltage range (2V to 5.5V) and extended operating temperature range (-40°C to 125°C). Input bias current: 1pA (picoampere range). Inventory: 3,611 units. Suitable for applications requiring ultra-low input bias current and extended temperature operation.

BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor): CMOS amplifiers with 10V/µs slew rate and 10MHz gain bandwidth product. These parts offer significantly higher performance but require minimum 3V supply voltage. Input bias current: 1pA. Suitable only for applications requiring high-speed operation and 3V minimum supply compatibility.

LMR344FVJ-E2 (Rohm Semiconductor): CMOS amplifier with 1V/µs slew rate and 2MHz gain bandwidth product. Supports 2.7V to 5.5V supply range. Input bias current: 1pA. Inventory: 870 units. Suitable for applications requiring picoampere-level input bias current.

All substitute parts maintain 14-TSSOP package compatibility, surface-mount mounting type, ROHS3 compliance, and MSL rating of 1 (unlimited). Selection should be based on specific application requirements for slew rate, bandwidth, supply voltage range, and input bias current characteristics.

Frequently Asked Questions (FAQ)

Q1: Can LMV324MT/NOPB directly replace LPV324IPWRE4 in existing designs?

A: LMV324MT/NOPB is pin-compatible and maintains the same 14-TSSOP package footprint. However, electrical performance differs: LMV324 offers 10× faster slew rate (1V/µs vs. 0.1V/µs) and 4.2× higher bandwidth (1MHz vs. 237kHz). These improvements are generally beneficial for most applications. Input bias current increases from 2nA to 15nA, which may affect high-impedance circuits. Verify that your application can tolerate these parameter changes before substitution.

Q2: What is the difference between LPV324MT/NOPB and LPV324MTX/NOPB?

A: Both parts are electrically identical with matching specifications. The primary difference is packaging format: LPV324MT/NOPB is supplied in Tube packaging, while LPV324MTX/NOPB is supplied in Tape & Reel format. LPV324MTX/NOPB has significantly higher inventory availability (10,300 units vs. 988 units), making it the preferred choice for production designs. Operating temperature range differs: LPV324MT/NOPB supports -40°C to 85°C, while LPV324MTX/NOPB also supports -40°C to 85°C.

Q3: Why do some substitute parts have different package designations (14-LSSOP vs. 14-TSSOP)?

A: BU7487FV-E2 and BU7487SFV-E2 use 14-LSSOP (Leadless Small-Outline Package) designation, while most other parts use 14-TSSOP (Thin Shrink Small-Outline Package). Although both packages have 0.173" width and 4.40mm pitch, the 14-LSSOP variant has slightly different lead geometry. Verify PCB footprint compatibility before selecting these parts. Most designs using 14-TSSOP footprints cannot accommodate 14-LSSOP variants without layout modification.

Q4: Which substitute part offers the lowest input bias current?

A: BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, and MCP6474-E/ST all feature 1pA (picoampere) input bias current, approximately 2,000× lower than the LPV324IPWRE4 (2nA). These CMOS-based amplifiers are suitable for ultra-high-impedance applications such as precision instrumentation and sensor interfaces. However, they require minimum supply voltages of 2V to 3V and may have different frequency response characteristics.

Q5: Can I use BU7487FV-E2 as a direct replacement for LPV324IPWRE4?

A: BU7487FV-E2 is not a direct replacement due to multiple parameter differences. It requires minimum 3V supply voltage (vs. 2.7V for LPV324IPWRE4), operates at maximum 105°C (vs. 125°C), and uses 14-LSSOP package instead of 14-TSSOP. However, BU7487FV-E2 offers superior performance: 10V/µs slew rate (100× faster), 10MHz bandwidth (42× higher), and 1pA input bias current. Use this part only in applications where 3V minimum supply voltage is acceptable and high-speed operation is required.

Q6: What is the significance of MSL rating 1 (Unlimited)?

A: MSL (Moisture Sensitivity Level) rating of 1 indicates unlimited shelf life without moisture-related degradation. All substitute parts listed maintain MSL rating of 1, meaning they can be stored indefinitely without special moisture-control packaging or baking procedures before soldering. This simplifies inventory management and reduces handling costs compared to higher MSL ratings.

Q7: Are all substitute parts ROHS3 compliant?

A: Yes, all substitute parts listed are ROHS3 compliant, meeting European Union Restriction of Hazardous Substances Directive requirements. This ensures compatibility with modern manufacturing processes and regulatory requirements for electronic equipment sold in regulated markets.

Q8: Which substitute part has the highest current output capability per channel?

A: LMV324MT/NOPB and LMV324MTX/NOPB offer 160mA output current per channel, compared to 72mA for the LPV324IPWRE4. This 2.2× improvement enables driving higher-impedance loads or multiple stages without additional buffering. LMR344FVJ-E2 provides 113mA per channel, and MCP6474-E/ST provides 32mA per channel.

Q9: What is the recommended substitute for battery-powered applications requiring minimum power consumption?

A: LPV324MT/NOPB or LPV324MTX/NOPB are recommended for battery-powered designs. These parts maintain the original 28µA total supply current (7µA per channel), identical to LPV324IPWRE4. MCP6474-E/ST offers 100µA total supply current (25µA per channel), providing a balance between low power consumption and improved performance. Avoid BU7487 series (6mA supply current) and LMR344FVJ-E2 (400µA supply current) for battery applications unless high-speed operation is critical.

Q10: Can I mix different substitute parts in the same design?

A: Mixing different substitute parts in the same PCB is not recommended unless each part operates in an isolated circuit with independent supply and signal paths. Differences in input offset voltage, input bias current, and frequency response characteristics may cause performance inconsistencies, crosstalk, or signal integrity issues in shared signal chains. For consistency and predictability, use identical part numbers across all four amplifier channels in a single package.

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