LPV324IPWE4 Equivalent & Substitute Parts

Part Overview

The LPV324IPWE4 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, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The LPV324IPWE4 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	LPV324IPWE4	—
Manufacturer	Texas Instruments	—
Product Status	Obsolete	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40°C ~ 125°C	—
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
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324IPWE4 is determined by the following critical parameters:

Primary Compatibility Criteria:

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

Secondary Performance Parameters:

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
Output current per channel: 72 mA or higher

Substitute parts are grouped into two categories:

Category A - Direct Replacements (Texas Instruments LMV/LPV Series): Parts that maintain identical or superior electrical performance with active product status and full temperature range support (-40°C to 125°C).

Category B - Functional Equivalents (Alternative Manufacturers): Parts from Rohm Semiconductor and Microchip Technology that meet core substitution criteria with comparable or enhanced performance characteristics, though some may have different temperature ranges or supply specifications.

Parameter Comparison

Parameter	LPV324IPWE4	LMV324MT/NOPB	LMV324MTX/NOPB	LPV324MT/NOPB	LPV324MTX/NOPB	BD12734FVJ-E2	BU7487FV-E2	BU7487SFV-E2	LMR344FVJ-E2	LMR934FVJ-E2	MCP6474-E/ST
Manufacturer	TI	TI	TI	TI	TI	Rohm	Rohm	Rohm	Rohm	Rohm	Microchip
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	CMOS	General Purpose	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	Rail-to-Rail
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-LSSOP	14-LSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	1.8 V	3 V	3 V	2.7 V	1.8 V	2 V
Voltage - Supply Span (Max)	5 V	5.5 V	5.5 V	5 V	5 V	5 V	5.5 V	5.5 V	5.5 V	5 V	5.5 V
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 ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Slew Rate	0.1 V/µs	1 V/µs	1 V/µs	0.1 V/µs	0.1 V/µs	0.4 V/µs	10 V/µs	10 V/µs	1 V/µs	0.35 V/µs	1.1 V/µs
Gain Bandwidth Product	237 kHz	1 MHz	1 MHz	152 kHz	152 kHz	1 MHz	10 MHz	10 MHz	2 MHz	1.4 MHz	2 MHz
Current - Input Bias	2 nA	15 nA	15 nA	2 nA	2 nA	50 nA	1 pA	1 pA	1 pA	5 nA	1 pA
Voltage - Input Offset	1.5 mV	1.7 mV	1.7 mV	1.5 mV	1.5 mV	1 mV	1 mV	1 mV	250 µV	1 mV	1.5 mV
Current - Supply	28 µA	410 µA	410 µA	28 µA	28 µA	1.2 mA	6 mA	6 mA	400 µA	250 µA	100 µA
Current - Output / Channel	72 mA	160 mA	160 mA	16 mA	16 mA	12 mA	12 mA	12 mA	113 mA	90 mA	32 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Tier 1 - Preferred Direct Replacements (Texas Instruments):

LMV324MT/NOPB and LMV324MTX/NOPB are the manufacturer-recommended primary substitutes. Both parts maintain active product status with full -40°C to 125°C operating temperature range, matching the original LPV324IPWE4 specification. These devices offer enhanced performance with 1V/µs slew rate and 1 MHz gain bandwidth product, providing superior dynamic response. The LMV324MT/NOPB is supplied in tube packaging with 2200 units in stock, while LMV324MTX/NOPB is supplied in cut tape and digi-reel format with 1795 units available. Both are ROHS3 compliant with MSL 1 rating (LMV324MTX/NOPB carries MSL 2).

LPV324MT/NOPB and LPV324MTX/NOPB maintain electrical characteristics identical to the original part (0.1V/µs slew rate, 152 kHz gain bandwidth product, 2 nA input bias current) with active product status. These are direct functional equivalents with the same low-power supply current (28 µA). Operating temperature range is limited to -40°C to 85°C. LPV324MT/NOPB is tube-packaged with 988 units in stock; LPV324MTX/NOPB is tape and reel packaged with 10,300 units available.

Tier 2 - Alternative Manufacturer Equivalents:

BD12734FVJ-E2 (Rohm Semiconductor) provides general purpose amplifier functionality with 4 circuits in 14-TSSOP package. This part operates across 1.8V to 5V supply range with 0.4V/µs slew rate and 1 MHz gain bandwidth product. Operating temperature range is -40°C to 85°C. Output current per channel is 12 mA, which is lower than the original 72 mA specification.

BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor) are CMOS amplifiers with 10V/µs slew rate and 10 MHz gain bandwidth product, offering significantly enhanced frequency response. These parts operate across 3V to 5.5V supply range with -40°C to 105°C temperature range. Input bias current is 1 pA (ultra-low). Package is 14-LSSOP (slightly different from 14-TSSOP). Output current per channel is 12 mA.

LMR344FVJ-E2 (Rohm Semiconductor) is a CMOS amplifier with 1V/µs slew rate and 2 MHz gain bandwidth product. Supply range is 2.7V to 5.5V with -40°C to 85°C operating temperature. Input offset voltage is 250 µV (superior to original 1.5 mV). Output current per channel is 113 mA.

LMR934FVJ-E2 (Rohm Semiconductor) is a general purpose amplifier with 0.35V/µs slew rate and 1.4 MHz gain bandwidth product. Supply range is 1.8V to 5V with -40°C to 85°C operating temperature. Input bias current is 5 nA. Output current per channel is 90 mA.

MCP6474-E/ST (Microchip Technology) is a CMOS amplifier with 1.1V/µs slew rate and 2 MHz gain bandwidth product. Supply range is 2V to 5.5V with full -40°C to 125°C operating temperature range. Input bias current is 1 pA. Output current per channel is 32 mA. This part is tube-packaged with 3611 units in stock.

Selection Criteria by Application:

For applications requiring full temperature range (-40°C to 125°C) operation, select LMV324MT/NOPB, LMV324MTX/NOPB, or MCP6474-E/ST.

For applications with reduced temperature requirements (-40°C to 85°C), all substitute parts are suitable.

For low-power supply current applications, LPV324MT/NOPB or LPV324MTX/NOPB maintain the original 28 µA specification.

For high-speed applications requiring slew rates above 1V/µs, select BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, or MCP6474-E/ST.

For applications requiring output current above 72 mA per channel, select LMV324MT/NOPB (160 mA), LMV324MTX/NOPB (160 mA), or LMR344FVJ-E2 (113 mA).

All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original component.

Frequently Asked Questions (FAQ)

Q1: Can LMV324MT/NOPB directly replace LPV324IPWE4 in existing designs?

LMV324MT/NOPB is the manufacturer-recommended substitute and shares identical pinout, package footprint (14-TSSOP), and rail-to-rail output configuration. The primary differences are enhanced performance specifications (1V/µs slew rate versus 0.1V/µs, 1 MHz versus 237 kHz gain bandwidth product) and higher supply current (410 µA versus 28 µA). These enhancements are backward-compatible with designs expecting the original part. Verify that the application circuit can accommodate the increased supply current draw.

Q2: What is the difference between 14-TSSOP and 14-LSSOP packages?

Both are 14-pin surface mount packages with 0.173" width and 4.40mm body width. The primary difference is pin pitch and body length. 14-TSSOP (thin shrink small outline package) and 14-LSSOP (low profile shrink small outline package) have different mechanical dimensions. PCB footprints are not interchangeable. BU7487FV-E2 and BU7487SFV-E2 use 14-LSSOP packaging and require different PCB layout than the original 14-TSSOP design.

Q3: Why do some substitute parts have lower output current per channel than the original?

Output current capability is determined by the internal output stage design and thermal characteristics. Parts such as BD12734FVJ-E2, BU7487FV-E2, and BU7487SFV-E2 specify 12 mA output current per channel, which is lower than the original 72 mA. These parts are suitable for applications requiring lower output current. For applications requiring 72 mA or higher output current per channel, select LMV324MT/NOPB (160 mA), LMV324MTX/NOPB (160 mA), or LMR344FVJ-E2 (113 mA).

Q4: Are CMOS amplifiers (BU7487, LMR344, MCP6474) compatible with designs using general purpose amplifiers (LPV324)?

CMOS amplifiers feature ultra-low input bias current (1 pA) compared to general purpose amplifiers (2 nA to 50 nA). This difference is significant only in applications with very high source impedance (>1 GΩ). CMOS amplifiers typically have lower input offset voltage drift and superior noise performance. Functionally, CMOS amplifiers are compatible with general purpose amplifier designs, but circuit performance may differ. Verify input impedance requirements and offset voltage specifications for the specific application.

Q5: What is the significance of MSL (Moisture Sensitivity Level) rating?

MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. MSL 2 (1 Year) indicates the component must be used within one year of the manufacturing date if stored in standard conditions. LMV324MTX/NOPB carries MSL 2 rating, requiring attention to manufacturing date codes. All other substitute parts carry MSL 1 rating, matching the original LPV324IPWE4 specification.

Q6: Which substitute part offers the best performance upgrade?

BU7487FV-E2 and BU7487SFV-E2 offer the most significant performance enhancement with 10V/µs slew rate (100x faster than original) and 10 MHz gain bandwidth product (42x higher than original). These CMOS amplifiers are suitable for high-speed signal processing applications. However, they require 14-LSSOP package footprint (not 14-TSSOP) and operate with minimum 3V supply (versus 2.7V for original). For applications requiring enhanced performance within the original 14-TSSOP package, select LMR344FVJ-E2 (2 MHz gain bandwidth product) or MCP6474-E/ST (2 MHz gain bandwidth product).

Q7: Can I use LPV324MT/NOPB as a substitute if my application operates only at -40°C to 85°C?

Yes. LPV324MT/NOPB maintains identical electrical characteristics to the original LPV324IPWE4 (0.1V/µs slew rate, 152 kHz gain bandwidth product, 2 nA input bias current, 28 µA supply current) with active product status. The operating temperature range is -40°C to 85°C, which is a subset of the original -40°C to 125°C range. If your application does not require operation above 85°C, LPV324MT/NOPB is a direct functional equivalent with 10,300 units available in tape and reel packaging.

Q8: What packaging options are available for each substitute part?

LMV324MT/NOPB: Tube packaging (2200 units in stock) LMV324MTX/NOPB: Cut tape and digi-reel (1795 units in stock) LPV324MT/NOPB: Tube packaging (988 units in stock) LPV324MTX/NOPB: Tape and reel (10,300 units in stock) BD12734FVJ-E2: Cut tape and digi-reel (906 units in stock) BU7487FV-E2: Cut tape and digi-reel (7900 units in stock) BU7487SFV-E2: Cut tape and digi-reel (961 units in stock) LMR344FVJ-E2: Cut tape and digi-reel (870 units in stock) LMR934FVJ-E2: Cut tape and digi-reel (3126 units in stock) MCP6474-E/ST: Tube packaging (3611 units in stock)

Tape and reel packaging is preferred for high-volume production. Tube packaging is suitable for lower-volume applications and prototyping.

Q9: Are all substitute parts RoHS3 compliant?

Yes. All substitute parts listed carry ROHS3 compliance certification, matching the original LPV324IPWE4. All parts are also REACH unaffected, indicating no restricted substances are present. Regulatory compliance is maintained across all substitute options.

Q10: What is the minimum supply voltage for each substitute part?

LPV324IPWE4 (original): 2.7V minimum LMV324MT/NOPB: 2.7V minimum LMV324MTX/NOPB: 2.7V minimum LPV324MT/NOPB: 2.7V minimum LPV324MTX/NOPB: 2.7V minimum BD12734FVJ-E2: 1.8V minimum BU7487FV-E2: 3V minimum BU7487SFV-E2: 3V minimum LMR344FVJ-E2: 2.7V minimum LMR934FVJ-E2: 1.8V minimum MCP6474-E/ST: 2V minimum

For applications with 2.7V minimum supply requirement, all Texas Instruments and Rohm LMR344 parts are suitable. For applications with lower supply voltage (1.8V), select BD12734FVJ-E2, LMR934FVJ-E2, or MCP6474-E/ST.

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