LMV324QPW Equivalent & Substitute Parts

Part Overview

The LMV324QPW is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-TSSOP surface-mount package. This device delivers rail-to-rail output capability with a 1 MHz gain-bandwidth product and operates across a 2.7 V to 5.5 V supply range, making it suitable for low-voltage analog signal processing applications.

The LMV324QPW currently holds Last Time Buy status, indicating that Texas Instruments has discontinued this specific packaging variant (Tube). Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs or design revisions.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	1	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	1.7	mV
Current - Supply (x4 Channels)	410	µA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	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 LMV324QPW is determined by strict electrical and mechanical compatibility criteria. The following parameters must be matched or exceeded in substitute parts:

Critical Matching Parameters:

Four independent operational amplifier circuits
Rail-to-rail output configuration
14-TSSOP surface-mount package footprint
Supply voltage range: minimum 2.7 V, maximum 5.5 V
Operating temperature range: -40°C to 125°C (or compatible subset)
Slew rate: 1 V/µs (or higher)
Gain-bandwidth product: 1 MHz (or higher)

Acceptable Variation Parameters:

Input bias current: 15 nA or lower (lower values indicate improved performance)
Input offset voltage: 1.7 mV or lower
Supply current: 410 µA or lower per channel group
Output current per channel: 40 mA or higher

Substitute parts are grouped into two categories: Direct Equivalents (identical electrical specifications with different packaging) and Functional Alternatives (different manufacturers or performance tiers that meet or exceed all critical parameters).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Packaging	Product Status
LMV324QPW	Texas Instruments	1	1	15	410	40	-40 to 125	Tube	Last Time Buy
LMV324QPWR	Texas Instruments	1	1	15	410	40	-40 to 125	Tape & Reel	Active
LMV324MT/NOPB	Texas Instruments	1	1	15	410	160	-40 to 125	Tube	Active
LMV324MTX/NOPB	Texas Instruments	1	1	15	410	160	-40 to 125	Cut Tape & Digi-Reel	Active
LPV324MT/NOPB	Texas Instruments	0.1	0.152	2	28	16	-40 to 85	Tube	Active
LPV324MTX/NOPB	Texas Instruments	0.1	0.152	2	28	16	-40 to 85	Tape & Reel	Active
AD8544ARUZ-REEL	Analog Devices Inc.	0.92	1	0.004	45	30	-40 to 125	Cut Tape & Digi-Reel	Active
APX324TSG-13	Diodes Incorporated	1	1	10	340	90	-40 to 85	Tape & Reel	Active
BD12734FVJ-E2	Rohm Semiconductor	0.4	1	50	1200	12	-40 to 85	Cut Tape & Digi-Reel	Active
BU7487FV-E2	Rohm Semiconductor	10	10	0.001	6000	12	-40 to 105	Cut Tape & Digi-Reel	Active
BU7487SFV-E2	Rohm Semiconductor	10	10	0.001	6000	12	-40 to 105	Cut Tape & Digi-Reel	Active

Engineering Selection Recommendations

Tier 1: Direct Equivalents (Recommended Primary Substitutes)

The following parts maintain identical electrical specifications to the LMV324QPW and differ only in packaging format or product status:

LMV324QPWR: Texas Instruments, Active status. Identical electrical performance. Packaging changed from Tube to Tape & Reel. Recommended for new production designs requiring continuous supply.
LMV324MT/NOPB: Texas Instruments, Active status. Identical core specifications. Output current per channel increased to 160 mA (exceeds requirement). Tube packaging available. Suitable for designs requiring higher output drive capability.
LMV324MTX/NOPB: Texas Instruments, Active status. Identical to LMV324MT/NOPB. Cut Tape & Digi-Reel packaging. Recommended for high-volume manufacturing.

Tier 2: Functional Alternatives (Performance-Matched Substitutes)

These parts meet all critical electrical parameters and operate within the same supply and temperature ranges:

AD8544ARUZ-REEL: Analog Devices Inc., Active status. Matches 1 MHz gain-bandwidth product and 1 V/µs slew rate. Superior input bias current (4 pA vs. 15 nA). Operating temperature range -40°C to 125°C. Suitable for applications requiring lower input bias current performance.
APX324TSG-13: Diodes Incorporated, Active status. Matches 1 MHz gain-bandwidth product and 1 V/µs slew rate. Improved input bias current (10 nA). Operating temperature range -40°C to 85°C. High inventory availability (72,900 pcs). Suitable for cost-optimized designs with reduced temperature range requirements.

Tier 3: Low-Power Alternative (Reduced Performance)

LPV324MT/NOPB and LPV324MTX/NOPB: Texas Instruments, Active status. Significantly reduced power consumption (28 µA vs. 410 µA). Reduced slew rate (0.1 V/µs) and gain-bandwidth product (152 kHz). Operating temperature range -40°C to 85°C. Suitable only for applications where bandwidth and slew rate constraints are acceptable and power consumption is critical.

Not Recommended for Direct Substitution:

BD12734FVJ-E2: Reduced slew rate (0.4 V/µs), higher supply current (1.2 mA), lower output current (12 mA), and reduced temperature range (-40°C to 85°C).
BU7487FV-E2 and BU7487SFV-E2: CMOS amplifier type with significantly different electrical characteristics (10 V/µs slew rate, 10 MHz GBW, 6 mA supply current). Suitable only for applications with fundamentally different performance requirements.

Frequently Asked Questions (FAQ)

Q1: Can I use LMV324QPWR as a direct replacement for LMV324QPW in existing designs?

A: Yes. LMV324QPWR is electrically identical to LMV324QPW. The only difference is packaging format: LMV324QPWR uses Tape & Reel instead of Tube. Both are 14-TSSOP surface-mount packages with identical footprints. No circuit modifications are required.

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

A: Both parts have identical electrical specifications. The difference is packaging: LMV324MT/NOPB is supplied in Tube format, while LMV324MTX/NOPB is supplied in Cut Tape & Digi-Reel format. Select based on your manufacturing process requirements.

Q3: Why does LMV324MT/NOPB show 160 mA output current per channel instead of 40 mA?

A: The LMV324MT/NOPB variant has enhanced output drive capability (160 mA vs. 40 mA per channel). This is a performance improvement that maintains backward compatibility. Designs requiring only 40 mA will operate without modification.

Q4: Can I substitute AD8544ARUZ-REEL for LMV324QPW?

A: Yes, with verification. AD8544ARUZ-REEL meets all critical parameters: 1 MHz gain-bandwidth product, 1 V/µs slew rate, rail-to-rail output, 14-TSSOP package, and -40°C to 125°C operating range. It offers superior input bias current performance (4 pA). Verify that your circuit design does not depend on the specific input bias current value of 15 nA.

Q5: Is APX324TSG-13 suitable for my application if it operates only to 85°C instead of 125°C?

A: APX324TSG-13 is suitable only if your application's maximum operating temperature does not exceed 85°C. If your design requires operation up to 125°C, use LMV324QPWR, LMV324MT/NOPB, LMV324MTX/NOPB, or AD8544ARUZ-REEL instead.

Q6: Should I use LPV324MT/NOPB to reduce power consumption?

A: LPV324MT/NOPB reduces supply current to 28 µA (vs. 410 µA), but this comes with significant trade-offs: slew rate drops to 0.1 V/µs (vs. 1 V/µs), and gain-bandwidth product reduces to 152 kHz (vs. 1 MHz). Use LPV324MT/NOPB only if your application can tolerate these reduced performance specifications and power consumption is the primary design constraint.

Q7: What does "Last Time Buy" status mean for LMV324QPW?

A: Last Time Buy indicates that Texas Instruments has discontinued this specific part variant and will not manufacture additional units after a specified date. Existing inventory may still be available, but new designs should transition to active alternatives such as LMV324QPWR, LMV324MT/NOPB, or LMV324MTX/NOPB.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document carry RoHS3 compliance certification, matching the LMV324QPW compliance status.

Q9: Do all substitute parts use the same 14-TSSOP package footprint?

A: Yes, with one exception. All parts except BU7487FV-E2 and BU7487SFV-E2 use the standard 14-TSSOP package (0.173", 4.40mm width). BU7487FV-E2 and BU7487SFV-E2 use 14-LSSOP (14-SSOP-B variant), which has a different footprint and is not recommended for direct substitution.

Q10: Which substitute part offers the best overall compatibility?

A: LMV324QPWR offers the best overall compatibility. It is manufactured by Texas Instruments (same as the original), maintains identical electrical specifications, operates across the full -40°C to 125°C temperature range, and is in Active product status with reliable supply availability.

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