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LMV324QDR Equivalent & Substitute Parts
Part Overview
The LMV324QDR 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 and is RoHS3 compliant. The LMV324QDR serves applications requiring low-power, general-purpose amplification with rail-to-rail output capability across supply voltages from 2.7V to 5.5V. Substitute parts are identified when equivalent electrical performance, package compatibility, and operating specifications align with the original component's functional requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LMV324QDR | — |
| Manufacturer | Texas Instruments | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| 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 |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV324QDR are identified based on strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Package type: 14-SOIC surface mount configuration
- Number of circuits: 4-circuit configuration
- Output type: Rail-to-Rail capability
- Supply voltage range: Minimum 2.7V to maximum 5.5V overlap
- Amplifier classification: General Purpose or equivalent functional category
- Compliance: RoHS3 compliant, MSL Level 1
Secondary Compatibility Parameters:
- Slew rate: 0.1V/µs to 10V/µs range
- Gain bandwidth product: 152 kHz to 10 MHz range
- Input bias current: 1 pA to 15 nA range
- Input offset voltage: 1 mV to 1.7 mV range
- Output current per channel: 12 mA to 160 mA range
- Operating temperature: Minimum -40°C with maximum 85°C or higher
Substitutes are grouped into two categories: direct Texas Instruments LMV324 series variants (LMV324M/NOPB, LMV324MX/NOPB) with identical electrical performance; low-power variants (LPV324M/NOPB, LPV324MX/NOPB) with reduced slew rate and bandwidth; cross-manufacturer alternatives (AD8544 series from Analog Devices, BU7244F-E2 and BU7487F-E2 from Rohm Semiconductor) with comparable performance within specified parameter ranges.
Parameter Comparison
| Parameter | LMV324QDR | LMV324M/NOPB | LMV324MX/NOPB | LPV324M/NOPB | LPV324MX/NOPB | AD8544ARZ | AD8544ARZ-REEL | AD8544ARZ-REEL7 | AD8544WARZ-R7 | BU7244F-E2 | BU7487F-E2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | TI | TI | TI | TI | TI | ADI | ADI | ADI | ADI | Rohm | Rohm |
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOP | 14-SOP |
| Packaging Type | CT | Tube | CT | Tube | CT | Tube | CT | CT | TR | CT | CT |
| Number of Circuits | 4 | 4 | 4 | 4 | 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 | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 1 | 1 | 1 | 0.1 | 0.1 | 0.92 | 0.92 | 0.92 | 0.92 | 0.4 | 10 |
| Gain Bandwidth Product (MHz) | 1 | 1 | 1 | 0.152 | 0.152 | 1 | 1 | 1 | 1 | 0.9 | 10 |
| Input Bias Current (nA) | 15 | 15 | 15 | 2 | 2 | 0.004 | 0.004 | 0.004 | 0.004 | 0.001 | 0.001 |
| Input Offset Voltage (mV) | 1.7 | 1.7 | 1.7 | 1.5 | 1.5 | 1 | 1 | 1 | 1 | 1 | 1 |
| Supply Current (µA) | 410 | 410 | 410 | 28 | 28 | 45 | 45 | 45 | 45 | 360 | 6000 |
| Output Current / Channel (mA) | 40 | 160 | 160 | 16 | 16 | 30 | 30 | 30 | 30 | 12 | 12 |
| Supply Voltage Min (V) | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 1.8 | 3 |
| Supply Voltage Max (V) | 5.5 | 5.5 | 5.5 | 5 | 5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 105 |
| RoHS Status | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 |
| MSL Level | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Engineering Selection Recommendations
Direct Substitutes (Identical Electrical Performance):
LMV324M/NOPB and LMV324MX/NOPB are direct substitutes for LMV324QDR. Both maintain identical slew rate (1V/µs), gain bandwidth product (1 MHz), input bias current (15 nA), input offset voltage (1.7 mV), and supply voltage range (2.7V to 5.5V). The primary difference is packaging format: LMV324M/NOPB is supplied in Tube packaging, while LMV324MX/NOPB is supplied in Cut Tape & Digi-Reel format. Output current per channel increases to 160 mA in both variants, providing enhanced drive capability. All three parts maintain Active product status and ROHS3 compliance with MSL Level 1.
Low-Power Variants (Reduced Performance Trade-off):
LPV324M/NOPB and LPV324MX/NOPB are substitutes when power consumption is the primary design constraint. These parts reduce supply current from 410µA to 28µA and output current per channel from 40 mA to 16 mA. Slew rate decreases to 0.1V/µs and gain bandwidth product reduces to 152 kHz. Operating temperature maximum is limited to 85°C. Supply voltage maximum is 5V. These variants are suitable for battery-powered or ultra-low-power applications where the reduced performance parameters are acceptable.
Cross-Manufacturer Alternatives (Analog Devices):
AD8544ARZ, AD8544ARZ-REEL, AD8544ARZ-REEL7, and AD8544WARZ-R7 are Analog Devices equivalents. All AD8544 variants maintain 1 MHz gain bandwidth product and 0.92V/µs slew rate, with operating temperature range -40°C to 125°C. Input bias current is significantly lower at 4 pA, and input offset voltage is 1 mV. Output current per channel is 30 mA. Supply voltage range is 2.7V to 5.5V. Packaging variants differ: AD8544ARZ is Tube, AD8544ARZ-REEL and AD8544ARZ-REEL7 are Cut Tape & Digi-Reel, and AD8544WARZ-R7 is Tape & Reel. All maintain ROHS3 compliance and MSL Level 1.
Cross-Manufacturer Alternatives (Rohm Semiconductor):
BU7244F-E2 is a CMOS amplifier with 0.4V/µs slew rate and 900 kHz gain bandwidth product. Input bias current is 1 pA with 1 mV input offset voltage. Output current per channel is 12 mA. Supply voltage range is 1.8V to 5.5V, allowing operation at lower voltages. Operating temperature is -40°C to 85°C. Package is 14-SOP (0.173", 4.40mm width), which differs slightly from the standard 14-SOIC (0.154", 3.90mm width).
BU7487F-E2 is a high-speed CMOS amplifier with 10V/µs slew rate and 10 MHz gain bandwidth product. Input bias current is 1 pA. Supply current is 6 mA. Output current per channel is 12 mA. Supply voltage range is 3V to 5.5V. Operating temperature is -40°C to 105°C. Package is 14-SOP (0.173", 4.40mm width).
Selection Criteria:
- For direct replacement with identical performance: Select LMV324M/NOPB or LMV324MX/NOPB based on packaging requirements.
- For power-constrained applications: Select LPV324M/NOPB or LPV324MX/NOPB.
- For lower input bias current and offset voltage: Select AD8544 series variants.
- For extended low-voltage operation: Select BU7244F-E2.
- For high-speed applications: Select BU7487F-E2.
All substitutes maintain Active product status, ROHS3 compliance, and MSL Level 1 moisture sensitivity rating.
Frequently Asked Questions (FAQ)
Q1: Can LMV324M/NOPB directly replace LMV324QDR in existing designs?
A: Yes. LMV324M/NOPB is a direct electrical equivalent with identical slew rate (1V/µs), gain bandwidth product (1 MHz), input bias current (15 nA), input offset voltage (1.7 mV), and supply voltage range (2.7V to 5.5V). The 14-SOIC package pinout is identical. The primary difference is packaging format (Tube vs. Cut Tape & Digi-Reel). Output current per channel increases from 40 mA to 160 mA, which is a performance enhancement. No circuit modifications are required.
Q2: What is the difference between LMV324MX/NOPB and LMV324M/NOPB?
A: Both parts are electrically identical. The difference is packaging: LMV324MX/NOPB is supplied in Cut Tape & Digi-Reel format suitable for automated assembly, while LMV324M/NOPB is supplied in Tube format suitable for manual handling or lower-volume applications. Inventory availability differs: LMV324MX/NOPB has 177,800 pieces in stock versus 2,202 pieces for LMV324M/NOPB.
Q3: When should LPV324 series be used instead of LMV324?
A: LPV324M/NOPB and LPV324MX/NOPB are selected when power consumption is critical. These parts reduce supply current to 28µA (versus 410µA) and output current per channel to 16 mA (versus 40 mA). Slew rate decreases to 0.1V/µs and gain bandwidth product reduces to 152 kHz. Operating temperature maximum is 85°C. These trade-offs are acceptable for battery-powered, portable, or ultra-low-power applications where the reduced performance parameters do not impact circuit function.
Q4: Are AD8544 variants pin-compatible with LMV324QDR?
A: Yes. AD8544ARZ, AD8544ARZ-REEL, AD8544ARZ-REEL7, and AD8544WARZ-R7 all use the 14-SOIC package with identical pinout. All four circuits are rail-to-rail amplifiers. Electrical performance is comparable: 1 MHz gain bandwidth product, 0.92V/µs slew rate, 2.7V to 5.5V supply range, and -40°C to 125°C operating temperature. Input bias current is significantly lower at 4 pA. No PCB modifications are required for substitution.
Q5: What is the package difference between 14-SOIC and 14-SOP?
A: Both are 14-pin surface mount packages with identical pinout. The primary difference is body width: 14-SOIC is 0.154 inches (3.90mm) wide, while 14-SOP is 0.173 inches (4.40mm) wide. This 0.019-inch difference may affect PCB layout in space-constrained designs. BU7244F-E2 and BU7487F-E2 use 14-SOP packaging. Verify PCB footprint compatibility before substitution.
Q6: Can BU7244F-E2 operate at lower supply voltages than LMV324QDR?
A: Yes. BU7244F-E2 operates from 1.8V to 5.5V, while LMV324QDR operates from 2.7V to 5.5V. This allows BU7244F-E2 to function in applications requiring sub-2.7V operation. However, slew rate is lower (0.4V/µs versus 1V/µs) and gain bandwidth product is lower (900 kHz versus 1 MHz). Output current per channel is also lower (12 mA versus 40 mA). Package width is slightly larger (14-SOP 0.173" versus 14-SOIC 0.154").
Q7: Is BU7487F-E2 suitable for high-speed signal processing?
A: Yes. BU7487F-E2 is designed for high-speed applications with 10V/µs slew rate and 10 MHz gain bandwidth product, compared to LMV324QDR's 1V/µs and 1 MHz. However, supply current is significantly higher at 6 mA (versus 410µA), and minimum supply voltage is 3V (versus 2.7V). Operating temperature maximum is 105°C. Output current per channel is lower at 12 mA. Package is 14-SOP (0.173" width). Select this part only when high-speed performance justifies the increased power consumption and package size.
Q8: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed (LMV324M/NOPB, LMV324MX/NOPB, LPV324M/NOPB, LPV324MX/NOPB, AD8544 series, BU7244F-E2, and BU7487F-E2) are RoHS3 compliant with MSL Level 1 moisture sensitivity rating. All parts are suitable for applications requiring RoHS compliance.
Q9: What inventory levels are available for each substitute?
A: LMV324MX/NOPB has the highest inventory at 177,800 pieces. AD8544ARZ-REEL7 has 26,342 pieces. AD8544ARZ has 15,845 pieces. LPV324MX/NOPB has 10,400 pieces. BU7244F-E2 has 5,200 pieces. AD8544ARZ-REEL has 4,790 pieces. LMV324M/NOPB has 2,202 pieces. LPV324M/NOPB has 1,387 pieces. BU7487F-E2 has 965 pieces. AD8544WARZ-R7 has 1,414 pieces. Verify current availability with supplier before design commitment.
Q10: Can multiple substitute parts be mixed in the same production batch?
A: Mixing substitute parts in the same production batch is not recommended unless circuit design explicitly allows for parameter variation. While all substitutes maintain the same pinout and package type, electrical performance parameters differ. For example, slew rate ranges from 0.1V/µs to 10V/µs, and gain bandwidth product ranges from 152 kHz to 10 MHz. Mixing parts may introduce performance inconsistencies across units. Standardize on a single substitute part number for each production batch to ensure consistent performance and traceability.
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