LPV324PWE4 Equivalent & Substitute Parts

Part Overview

The LPV324PWE4 is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail device in a 14-TSSOP surface-mount package. This part is classified as obsolete, indicating that Texas Instruments has discontinued active production and support. The LPV324PWE4 operates across a 2.7 V to 5 V 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 conditioning applications.

Due to its obsolete status, identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability. Active alternatives with comparable or enhanced electrical characteristics are available from Texas Instruments and other manufacturers.

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 85	°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 LPV324PWE4 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of circuits: 4 (quad configuration required)
Output type: Rail-to-Rail
Package type: 14-TSSOP surface-mount
Supply voltage range: Minimum 2.7 V, maximum ≥ 5 V
Operating temperature range: Minimum -40°C, maximum ≥ 85°C
Amplifier type: General Purpose or CMOS (both acceptable for general-purpose applications)

Secondary Compatibility Parameters:

Input bias current: ≤ 2 nA preferred (lower values acceptable)
Input offset voltage: ≤ 1.5 mV preferred
Slew rate: ≥ 0.1 V/µs minimum
Gain bandwidth product: ≥ 237 kHz minimum
Output current per channel: ≥ 16 mA minimum

Substitute parts are grouped into two categories:

Category A - Direct Replacements (LPV324 Series): Parts maintaining identical electrical characteristics and the same base product number (LPV324). These include LPV324MT/NOPB and LPV324MTX/NOPB, which differ only in packaging format (Tube vs. Tape & Reel).

Category B - Enhanced Alternatives: Parts with improved electrical performance while maintaining package compatibility and supply voltage overlap. These include LMV324MT/NOPB, LMV324MTX/NOPB (Texas Instruments LMV® series with higher bandwidth and operating temperature), and cross-manufacturer alternatives from Rohm Semiconductor and Microchip Technology.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Input Offset (mV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Output Current (mA)	Product Status
LPV324PWE4	Texas Instruments	General Purpose	0.1	237	2	1.5	2.7	5	-40 to 85	72	Obsolete
LPV324MT/NOPB	Texas Instruments	General Purpose	0.1	152	2	1.5	2.7	5	-40 to 85	16	Active
LPV324MTX/NOPB	Texas Instruments	General Purpose	0.1	152	2	1.5	2.7	5	-40 to 85	16	Active
LMV324MT/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	2.7	5.5	-40 to 125	160	Active
LMV324MTX/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	2.7	5.5	-40 to 125	160	Active
BD12734FVJ-E2	Rohm Semiconductor	General Purpose	0.4	1000	50	1	1.8	5	-40 to 85	12	Active
BU7487FV-E2	Rohm Semiconductor	CMOS	10	10000	0.001	1	3	5.5	-40 to 105	12	Active
BU7487SFV-E2	Rohm Semiconductor	CMOS	10	10000	0.001	1	3	5.5	-40 to 105	12	Active
LMR344FVJ-E2	Rohm Semiconductor	CMOS	1	2000	0.001	0.25	2.7	5.5	-40 to 85	113	Active
LMR934FVJ-E2	Rohm Semiconductor	General Purpose	0.35	1400	5	1	1.8	5	-40 to 85	90	Active
MCP6474-E/ST	Microchip Technology	CMOS	1.1	2000	0.001	1.5	2	5.5	-40 to 125	32	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Characteristics):

LPV324MT/NOPB and LPV324MTX/NOPB are the primary recommended substitutes. Both parts maintain the exact electrical specifications of the LPV324PWE4 (0.1 V/µs slew rate, 152 kHz gain bandwidth product, 2 nA input bias current, 1.5 mV input offset voltage) and operate within the identical 2.7 V to 5 V supply range and -40°C to 85°C temperature range. The difference between these two parts is packaging format: LPV324MT/NOPB is supplied in Tube packaging, while LPV324MTX/NOPB is supplied in Tape & Reel format. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). LPV324MTX/NOPB offers significantly higher inventory availability (10,300 pcs) compared to LPV324MT/NOPB (988 pcs).

For Enhanced Performance with Broader Operating Range:

LMV324MT/NOPB and LMV324MTX/NOPB (Texas Instruments LMV® series) provide improved electrical performance while maintaining package compatibility. These parts offer 10× higher gain bandwidth product (1 MHz vs. 237 kHz), 10× faster slew rate (1 V/µs vs. 0.1 V/µs), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). Supply voltage range extends to 5.5 V maximum. These parts are suitable for applications requiring higher bandwidth or operation at elevated temperatures. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

For Cross-Manufacturer Alternatives:

LMR934FVJ-E2 (Rohm Semiconductor) provides general-purpose amplifier functionality with 0.35 V/µs slew rate and 1.4 MHz gain bandwidth product. This part maintains the 14-TSSOP package and operates across -40°C to 85°C temperature range. Supply voltage range is 1.8 V to 5 V, providing lower minimum voltage capability. Input bias current is 5 nA (higher than LPV324PWE4 but acceptable for general-purpose applications). This part is active with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

MCP6474-E/ST (Microchip Technology) is a CMOS alternative offering 1.1 V/µs slew rate and 2 MHz gain bandwidth product in 14-TSSOP package. This part operates across -40°C to 125°C temperature range with 2 V to 5.5 V supply voltage span. CMOS input stage provides 1 pA input bias current (significantly lower than LPV324PWE4). This part is active with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

For High-Performance CMOS Applications:

BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor) are CMOS amplifiers offering 10 V/µs slew rate and 10 MHz gain bandwidth product. These parts operate across -40°C to 105°C temperature range with 3 V to 5.5 V supply voltage span. CMOS input stage provides 1 pA input bias current. Both parts are active with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). These parts are suitable for applications requiring significantly higher bandwidth and faster transient response than the LPV324PWE4.

All recommended substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with the original LPV324PWE4.

Frequently Asked Questions (FAQ)

Q1: Can LPV324MT/NOPB be used as a direct drop-in replacement for LPV324PWE4?

A: Yes. LPV324MT/NOPB maintains identical electrical specifications (0.1 V/µs slew rate, 2 nA input bias current, 1.5 mV input offset voltage) and operates within the same 2.7 V to 5 V supply range and -40°C to 85°C temperature range. The 14-TSSOP package is identical. The only difference is packaging format (Tube vs. the original part's format). No circuit modifications are required.

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

A: Both parts have identical electrical specifications and package type (14-TSSOP). The difference is in supply format: LPV324MT/NOPB is supplied in Tube packaging, while LPV324MTX/NOPB is supplied in Tape & Reel format. LPV324MTX/NOPB offers higher inventory availability (10,300 pcs vs. 988 pcs) and is preferred for high-volume production. Moisture sensitivity level differs slightly (MSL 1 for both, but LPV324MTX/NOPB specifies 1 Year storage).

Q3: Should I use LMV324MT/NOPB instead of LPV324MT/NOPB?

A: This depends on application requirements. LMV324MT/NOPB offers significantly higher bandwidth (1 MHz vs. 152 kHz) and faster slew rate (1 V/µs vs. 0.1 V/µs), making it suitable for higher-frequency signal processing. It also extends operating temperature to 125°C and supply voltage to 5.5 V. However, it draws higher supply current (410 µA vs. 28 µA) and has higher input bias current (15 nA vs. 2 nA). For low-power, low-frequency applications, LPV324MT/NOPB is more appropriate. For higher-bandwidth or higher-temperature applications, LMV324MT/NOPB is recommended.

Q4: Can I use a CMOS amplifier like BU7487FV-E2 to replace the LPV324PWE4?

A: CMOS amplifiers like BU7487FV-E2 can replace the LPV324PWE4 in many applications due to superior electrical performance (10 V/µs slew rate, 10 MHz bandwidth, 1 pA input bias current). However, CMOS devices have different input impedance characteristics and may require circuit optimization for best performance. The minimum supply voltage for BU7487FV-E2 is 3 V (vs. 2.7 V for LPV324PWE4), which may be a constraint in low-voltage applications. Verify that your circuit can tolerate these differences before substitution.

Q5: What is the significance of the 14-TSSOP package specification?

A: The 14-TSSOP (Thin Shrink Small Outline Package) is a surface-mount package with 0.173" width and 4.40mm body width. All recommended substitutes maintain this identical package specification, ensuring mechanical and electrical compatibility with existing PCB layouts. No PCB redesign is required when substituting between parts with the same 14-TSSOP package designation.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts (LPV324MT/NOPB, LPV324MTX/NOPB, LMV324MT/NOPB, LMV324MTX/NOPB, BD12734FVJ-E2, BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, LMR934FVJ-E2, and MCP6474-E/ST) are ROHS3 compliant, matching the compliance status of the original LPV324PWE4. All parts are also REACH unaffected and classified as EAR99 for export purposes.

Q7: Which substitute offers the lowest power consumption?

A: LPV324MT/NOPB and LPV324MTX/NOPB maintain the lowest supply current of the LPV324PWE4 (28 µA for all four channels). These parts are ideal for battery-powered or ultra-low-power applications. The LMV324 series draws 410 µA, while CMOS alternatives like BU7487FV-E2 draw 6 mA. For power-critical applications, the LPV324 series is the appropriate choice.

Q8: What is the inventory status of substitute parts?

A: LPV324MTX/NOPB has the highest inventory availability (10,300 pcs), followed by BU7487FV-E2 (7,900 pcs) and LMR934FVJ-E2 (3,126 pcs). LPV324MT/NOPB has lower availability (988 pcs). For applications requiring immediate delivery or high-volume procurement, LPV324MTX/NOPB is the recommended choice due to superior stock levels.

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