LPV324MX/NOPB Equivalent & Substitute Parts

Part Overview

The LPV324MX/NOPB 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 Active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

The LPV324MX/NOPB operates across a 2.7 V to 5 V supply span with a gain bandwidth product of 152 kHz and a slew rate of 0.1 V/µs. With 10,400 units currently in stock, this part remains available; however, equivalent and substitute parts may be required for applications demanding higher performance specifications, extended temperature ranges, improved input bias characteristics, or alternative packaging configurations.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324MX/NOPB	—
Manufacturer	Texas Instruments	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Gain Bandwidth Product	152	kHz
Slew Rate	0.1	V/µs
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply	28	µA (x4 Channels)
Current - Output / Channel	16	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Product Status	Active	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324MX/NOPB is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Number of circuits: 4 channels
Output type: Rail-to-Rail configuration
Package type: 14-pin SOIC or equivalent 14-pin SOP footprint
Mounting type: Surface Mount
Supply voltage span: Minimum 2.7 V, Maximum ≥ 5 V
RoHS3 compliance and MSL rating ≤ 3

Performance Parameters Affecting Substitution:

Gain Bandwidth Product (152 kHz baseline)
Slew Rate (0.1 V/µs baseline)
Current - Input Bias (2 nA baseline)
Voltage - Input Offset (1.5 mV baseline)
Current - Supply per channel
Current - Output per channel
Operating temperature range (-40°C to 85°C baseline)

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents: Parts with identical or superior electrical performance within the same supply voltage range and temperature specification. These include LMV324QDR, LMV324ID, LMV324LIDT, and LMV324QD.

Category B - Enhanced Performance Substitutes: Parts with improved specifications in gain bandwidth product, slew rate, input bias current, or supply voltage range. These include LMV324IDR, BU7244F-E2, BU7487F-E2, LMR934F-GE2, and LMV324AM14X.

Parameter Comparison

Parameter	LPV324MX/NOPB	LMV324QDR	LMV324IDR	BU7244F-E2	BU7487F-E2	LMR934F-GE2	LMV324LIDT
Manufacturer	Texas Instruments	Texas Instruments	UMW	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	STMicroelectronics
Amplifier Type	General Purpose	General Purpose	Voltage Feedback	CMOS	CMOS	General Purpose	General Purpose
Number of Circuits	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
Package / Case	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 (0.173", 4.40mm)	14-SOIC (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)
Gain Bandwidth Product (kHz)	152	1000	1000	900	10000	1400	1300
Slew Rate (V/µs)	0.1	1	—	0.4	10	0.35	0.7
Current - Input Bias (nA)	2	15	0.01	0.001	0.001	5	27
Voltage - Input Offset (mV)	1.5	1.7	0.8	1	1	1	1
Current - Supply (µA)	28	410	45	360	6000	250	130
Current - Output / Channel (mA)	16	40	25	12	12	90	70
Voltage - Supply Span Min (V)	2.7	2.7	2.1	1.8	3	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 125	-25 to 85	-40 to 85	-40 to 105	-40 to 85	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Active	Active	Active	Active
RoHS Status	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)

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance:

LMV324QDR (Texas Instruments) and LMV324LIDT (STMicroelectronics) are recommended as primary substitutes. Both maintain the 14-SOIC footprint compatible with LPV324MX/NOPB PCB layouts. LMV324QDR extends the operating temperature range to -40°C to 125°C and increases gain bandwidth product to 1 MHz. LMV324LIDT provides similar performance with extended temperature capability and higher output current per channel (70 mA versus 16 mA).

For Low-Power Supply Applications:

LMV324IDR (UMW) operates at minimum supply voltage of 2.1 V, lower than the LPV324MX/NOPB requirement of 2.7 V. This part is suitable for battery-powered or low-voltage systems. Input bias current is significantly reduced to 10 pA, and gain bandwidth product reaches 1 MHz.

For High-Speed Applications:

BU7487F-E2 (Rohm Semiconductor) delivers 10 MHz gain bandwidth product and 10 V/µs slew rate, representing a 65-fold improvement in bandwidth and 100-fold improvement in slew rate over the LPV324MX/NOPB. This CMOS amplifier is suitable for signal conditioning and high-frequency filtering applications. Operating temperature extends to 105°C.

For High Output Current Requirements:

LMR934F-GE2 (Rohm Semiconductor) provides 90 mA output current per channel, compared to 16 mA in the LPV324MX/NOPB. This part is suitable for driving capacitive loads or low-impedance circuits. Gain bandwidth product is 1.4 MHz with 0.35 V/µs slew rate.

For Ultra-Low Input Bias Current:

BU7244F-E2 (Rohm Semiconductor) features input bias current of 1 pA, approximately 2000 times lower than the LPV324MX/NOPB. This CMOS amplifier is essential for high-impedance sensor interfaces and precision measurement circuits. Minimum supply voltage is 1.8 V.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance and MSL rating of 1 (Unlimited), ensuring compatibility with standard manufacturing and storage requirements. All parts are classified as Active product status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q1: Can LMV324QDR directly replace LPV324MX/NOPB on existing PCBs?

A: Yes. Both parts use identical 14-SOIC (0.154", 3.90mm Width) packaging. Pin configuration and functional pinout are compatible. LMV324QDR provides superior performance with 1 MHz gain bandwidth product versus 152 kHz, and extends operating temperature to 125°C. No PCB modifications are required.

Q2: What is the primary difference between LMV324IDR and LPV324MX/NOPB?

A: LMV324IDR is manufactured by UMW and classified as a Voltage Feedback amplifier, whereas LPV324MX/NOPB is a General Purpose amplifier from Texas Instruments. LMV324IDR operates at lower minimum supply voltage (2.1 V versus 2.7 V) and features significantly lower input bias current (10 pA versus 2 nA). Gain bandwidth product is 1 MHz versus 152 kHz. Both maintain 4-circuit rail-to-rail configuration in 14-SOIC packaging.

Q3: Why would BU7487F-E2 be selected over LPV324MX/NOPB?

A: BU7487F-E2 is selected for applications requiring high-speed signal processing. It delivers 10 MHz gain bandwidth product (65 times higher) and 10 V/µs slew rate (100 times higher). This CMOS amplifier from Rohm Semiconductor is suitable for high-frequency filtering, fast transient response, and precision timing circuits. Operating temperature extends to 105°C. Trade-off is higher supply current (6 mA versus 28 µA).

Q4: Is LMV324AM14X a viable substitute despite Obsolete product status?

A: LMV324AM14X from onsemi is classified as Obsolete product status. While it offers superior specifications including 1.4 MHz gain bandwidth product, 1.5 V/µs slew rate, and extended temperature range to 125°C, obsolete status indicates discontinued manufacturing. This part should not be selected for new designs. Existing inventory may be available but future procurement is not guaranteed.

Q5: What packaging considerations apply when substituting with Rohm Semiconductor parts?

A: Rohm Semiconductor parts BU7244F-E2, BU7487F-E2, and LMR934F-GE2 use 14-SOIC (0.173", 4.40mm Width) packaging, which differs from the LPV324MX/NOPB standard of 14-SOIC (0.154", 3.90mm Width). The 0.019" (0.5mm) width difference may affect PCB layout compatibility. Verify footprint dimensions against PCB design files before substitution. Pin configuration remains compatible.

Q6: How does input bias current affect circuit design when substituting?

A: LPV324MX/NOPB specifies 2 nA input bias current. Substitutes range from 0.001 pA (BU7244F-E2, BU7487F-E2) to 27 nA (LMV324LIDT). Lower input bias current reduces offset voltage drift in high-impedance circuits and improves precision in transimpedance amplifier configurations. Higher input bias current may require input bias current compensation networks in sensitive applications. Select substitutes based on circuit impedance levels.

Q7: What is the significance of supply voltage span differences?

A: LPV324MX/NOPB operates from 2.7 V to 5 V. Substitutes offer varying ranges: LMV324IDR (2.1 V to 5.5 V), BU7244F-E2 (1.8 V to 5.5 V), and BU7487F-E2 (3 V to 5.5 V). Lower minimum voltage enables operation in battery-powered systems. Higher maximum voltage provides margin in systems with voltage regulation tolerance. Verify supply voltage compatibility with system design specifications before substitution.

Q8: Are there inventory considerations when selecting substitutes?

A: Current inventory levels vary significantly. LMV324LIDT has 500,400 units in stock, while BU7487F-E2 has only 965 units. LPV324MX/NOPB has 10,400 units available. For high-volume production, verify substitute part availability and lead times with suppliers. Obsolete parts such as LMV324AM14X and Last Time Buy parts (LMV324ID, LMV324QD) have limited inventory and should not be selected for new designs requiring long-term supply.

Q9: How do slew rate specifications impact circuit performance?

A: LPV324MX/NOPB has 0.1 V/µs slew rate, limiting maximum output voltage change rate. BU7487F-E2 provides 10 V/µs (100 times faster), enabling high-frequency signal amplification and fast transient response. LMV324QDR and LMV324IDR provide 1 V/µs (10 times faster). Lower slew rate introduces distortion in high-frequency applications. Select slew rate based on signal bandwidth requirements and acceptable harmonic distortion levels.

Q10: What compliance certifications are maintained across all substitutes?

A: All listed substitute parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), except LMV324DR2G which has MSL rating of 3 (168 Hours). ROHS3 compliance ensures lead-free manufacturing and environmental compliance. MSL rating of 1 indicates unlimited shelf life without moisture baking requirements. MSL rating of 3 requires moisture baking after 168 hours of storage in high-humidity environments. Verify MSL requirements against manufacturing process specifications.

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