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LMV324M Equivalent & Substitute Parts
Part Overview
The LMV324M is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. Manufactured by Texas Instruments, this device delivers rail-to-rail output capability with a 1 MHz gain-bandwidth product, suitable for low-power analog signal processing applications across industrial, consumer, and automotive domains.
The LMV324M carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term production requirements. Active alternatives with compatible electrical and mechanical specifications are available from multiple manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Number of Circuits | 4 | Channels |
| Amplifier Type | General Purpose | — |
| Output Type | Rail-to-Rail | — |
| Gain Bandwidth Product | 1 | MHz |
| Slew Rate | 1 | V/µs |
| Voltage - Input Offset | 1.7 | mV |
| Current - Input Bias | 15 | nA |
| Current - Supply (per 4 Channels) | 410 | µA |
| Current - Output / Channel | 160 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LMV324M is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Number of Circuits: 4 independent amplifier channels
- Package / Case: 14-SOIC form factor (0.154", 3.90mm Width)
- Output Type: Rail-to-Rail capability
- Voltage Supply Range: Minimum 2.7 V, Maximum 5.5 V
- Operating Temperature Range: -40°C to 125°C
- Mounting Type: Surface Mount
Secondary Compatibility Parameters:
- Gain Bandwidth Product: 1 MHz (primary specification)
- Slew Rate: 1 V/µs (primary specification)
- Voltage - Input Offset: 1.7 mV (maximum allowable)
- Current - Input Bias: 15 nA (maximum allowable)
- Current - Supply: 410 µA per 4 channels (maximum allowable)
- Current - Output / Channel: 160 mA (minimum required)
Substitute parts must maintain electrical performance within these defined boundaries. Parts with identical package, circuit count, and supply voltage range are classified as direct substitutes. Parts with enhanced performance characteristics (lower bias current, lower offset voltage, higher slew rate, or higher bandwidth) are classified as performance-enhanced substitutes and remain functionally compatible.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Circuits | GBW (MHz) | Slew Rate (V/µs) | Input Offset (mV) | Input Bias (pA/nA) | Supply Current (µA) | Output Current (mA) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV324M | Texas Instruments | Obsolete | 4 | 1 | 1 | 1.7 | 15 nA | 410 | 160 | -40 to 125 | 14-SOIC |
| LMV324M/NOPB | Texas Instruments | Active | 4 | 1 | 1 | 1.7 | 15 nA | 410 | 160 | -40 to 125 | 14-SOIC |
| LMV324ID | Texas Instruments | Last Time Buy | 4 | 1 | 1 | 1.7 | 15 nA | 410 | 40 | -40 to 125 | 14-SOIC |
| AD8544ARZ-REEL7 | Analog Devices Inc. | Active | 4 | 1 | 0.92 | 1 | 4 pA | 45 | 30 | -40 to 125 | 14-SOIC |
| ISL28414FBZ | Renesas Electronics | Active | 4 | 5 | 2.5 | 0.5 | 3 pA | 300 | 31 | -40 to 125 | 14-SOIC |
| ISL28414FBZ-T7 | Renesas Electronics | Active | 4 | 5 | 2.5 | 0.5 | 3 pA | 300 | 31 | -40 to 125 | 14-SOIC |
| LMV324BG-13 | Diodes Incorporated | Active | 4 | 1 | 1 | 1.7 | 15 nA | 340 | 90 | -40 to 125 | 14-SOIC |
| LMV324DR2G | onsemi | Active | 4 | 1 | 1 | 1.7 | 1 nA | 100 | 160 | -40 to 85 | 14-SOIC |
| MAX4078ESD+ | Analog Devices Inc./Maxim | Active | 4 | 0.23 | 0.09 | 1.2 | 1 pA | 45 | 20 | -40 to 70 | 14-SOIC |
| MAX4294ESD+ | Analog Devices Inc./Maxim | Active | 4 | 0.5 | 0.2 | 0.2 | 15 nA | 100 | 20 | -40 to 85 | 14-SOIC |
Engineering Selection Recommendations
Direct Substitutes (Identical Electrical and Mechanical Specifications):
LMV324M/NOPB is the primary direct substitute. This part maintains identical electrical specifications and 14-SOIC packaging. The distinction is packaging format (Tube vs. original specification) and Active product status. This part is recommended for immediate replacement in new designs and production continuity.
Compatible Substitutes (Same Package, Circuit Count, and Supply Range):
LMV324BG-13 (Diodes Incorporated) and LMV324DR2G (onsemi) maintain the 14-SOIC package, four-circuit configuration, and 2.7 V to 5.5 V supply range. Both are Active products. LMV324BG-13 provides electrical characteristics closely aligned with the original specification. LMV324DR2G operates within a reduced temperature range (-40°C to 85°C) and exhibits lower input bias current (1 nA), making it suitable for applications where temperature range is not a constraint.
Performance-Enhanced Substitutes:
AD8544ARZ-REEL7 (Analog Devices Inc.) delivers superior input bias current (4 pA) and lower input offset voltage (1 mV) while maintaining the 14-SOIC package and four-circuit configuration. This part is Active and operates across the full -40°C to 125°C temperature range. Supply current is significantly reduced (45 µA vs. 410 µA), benefiting low-power applications.
ISL28414FBZ and ISL28414FBZ-T7 (Renesas Electronics) provide enhanced performance with 5 MHz gain-bandwidth product, 2.5 V/µs slew rate, and 3 pA input bias current. Both maintain 14-SOIC packaging and full temperature range operation. These parts are suitable for applications requiring higher bandwidth and faster transient response.
MAX4294ESD+ (Analog Devices Inc./Maxim Integrated) offers reduced input offset voltage (200 µV) and operates across -40°C to 85°C. This part is Active and suitable for precision applications within the specified temperature range.
Not Recommended:
MAX4078ESD+ exhibits reduced gain-bandwidth product (230 kHz) and slew rate (0.09 V/µs), falling below the LMV324M specification. Operating temperature range is limited to -40°C to 70°C. This part is not suitable for direct substitution.
LMV324ID carries Last Time Buy status, indicating discontinued production. While electrically compatible, this part should not be selected for new designs or long-term production commitments.
Frequently Asked Questions (FAQ)
Q: Can LMV324M/NOPB be used as a direct replacement for LMV324M?
A: Yes. LMV324M/NOPB is electrically and mechanically identical to LMV324M. The difference is packaging format (Tube vs. original specification) and Active product status. This is the recommended direct substitute.
Q: What is the primary difference between LMV324M and AD8544ARZ-REEL7?
A: Both devices maintain four circuits in 14-SOIC packaging and operate across -40°C to 125°C. AD8544ARZ-REEL7 provides superior input bias current (4 pA vs. 15 nA) and significantly lower supply current (45 µA vs. 410 µA). Output current capability is reduced (30 mA vs. 160 mA). Selection depends on application requirements for bias current, power consumption, and output drive capability.
Q: Are ISL28414FBZ and ISL28414FBZ-T7 interchangeable?
A: Yes. Both parts are electrically identical. The difference is packaging format: ISL28414FBZ is supplied in Tube; ISL28414FBZ-T7 is supplied in Tape & Reel (TR). Select based on procurement and assembly requirements.
Q: Can MAX4294ESD+ replace LMV324M in all applications?
A: MAX4294ESD+ is compatible within the -40°C to 85°C temperature range. Applications requiring operation above 85°C must use LMV324M/NOPB, AD8544ARZ-REEL7, or ISL28414 series. MAX4294ESD+ offers superior input offset voltage (200 µV vs. 1.7 mV), beneficial for precision applications.
Q: What is the significance of the 14-SOIC package specification?
A: The 14-SOIC (0.154", 3.90mm Width) package is a standard surface-mount form factor. All substitute parts listed maintain this package specification, ensuring mechanical compatibility with existing PCB layouts and assembly processes. Package compatibility is a primary substitution criterion.
Q: Why is LMV324ID not recommended despite electrical compatibility?
A: LMV324ID carries Last Time Buy status, indicating production discontinuation. While electrically compatible, this part should not be selected for new designs or production commitments requiring long-term supply assurance.
Q: How does supply current affect component selection?
A: Supply current directly impacts power consumption and thermal management. LMV324M draws 410 µA per four channels. AD8544ARZ-REEL7 draws 45 µA, reducing power dissipation by approximately 89%. For battery-powered or thermally constrained applications, lower supply current is advantageous. For applications with no power constraints, higher supply current is not a limiting factor.
Q: What is the difference between Tube and Tape & Reel packaging?
A: Tube packaging is used for manual handling and lower-volume applications. Tape & Reel (TR) packaging is used for automated assembly processes and higher-volume production. Both formats contain identical components; selection depends on manufacturing process requirements.
Q: Can parts with higher gain-bandwidth product (ISL28414 series at 5 MHz) be used in place of LMV324M (1 MHz)?
A: Yes. Higher gain-bandwidth product is a performance enhancement. ISL28414 series parts maintain all mechanical and supply voltage specifications while providing faster transient response and higher bandwidth. These parts are suitable for applications requiring enhanced frequency response.
Q: What compliance certifications are relevant for substitution?
A: All listed substitute parts maintain ROHS3 compliance and EAR99 ECCN classification, matching the original LMV324M specification. REACH status varies; verify specific regulatory requirements for your application. Moisture Sensitivity Level (MSL) ranges from 1 to 3; confirm compatibility with your assembly process and storage conditions.
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