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LMV324QDRG4 Equivalent & Substitute Parts
Part Overview
The LMV324QDRG4 is a general-purpose operational amplifier integrated circuit 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 discontinued at DiGi Electronics, which necessitates identification of equivalent and substitute components for ongoing design requirements and production needs. The LMV324QDRG4 operates across a supply voltage range of 2.7 V to 5.5 V with an operating temperature range of -40°C to 125°C, making it suitable for low-power general-purpose amplification applications.
Substiute Parts
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-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 LMV324QDRG4 is determined by strict equivalence across the following critical parameters: amplifier type (general purpose), number of circuits (4), output type (rail-to-rail), package type (14-SOIC surface mount), and compliance certifications (ROHS3, MSL 1). Substitute parts are grouped into two primary categories based on electrical performance characteristics:
Category 1: Direct Electrical Equivalents Parts that maintain identical or near-identical electrical specifications including slew rate (1 V/µs), gain bandwidth product (1 MHz), input bias current (15 nA), and output current per channel (40 mA). These parts are interchangeable in applications where the LMV324QDRG4 specifications are required.
Category 2: Performance-Optimized Alternatives Parts that maintain the same package, circuit count, and rail-to-rail output configuration but offer different electrical performance characteristics such as lower power consumption, lower input bias current, or higher slew rate. These parts are suitable for applications where the LMV324QDRG4 specifications exceed requirements or where enhanced performance is beneficial.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Number of Circuits | Output Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV324QDRG4 | Texas Instruments | Discontinued | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 40 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LMV324QDR | Texas Instruments | Active | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 40 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LMV324M/NOPB | Texas Instruments | Active | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LMV324MX/NOPB | Texas Instruments | Active | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LPV324M/NOPB | Texas Instruments | Active | General Purpose | 4 | Rail-to-Rail | 0.1 | 0.152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC |
| LPV324MX/NOPB | Texas Instruments | Active | General Purpose | 4 | Rail-to-Rail | 0.1 | 0.152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC |
| AD8544ARZ | Analog Devices Inc. | Active | General Purpose | 4 | Rail-to-Rail | 0.92 | 1 | 0.004 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| AD8544ARZ-REEL7 | Analog Devices Inc. | Active | General Purpose | 4 | Rail-to-Rail | 0.92 | 1 | 0.004 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| AD8544WARZ-R7 | Analog Devices Inc. | Active | General Purpose | 4 | Rail-to-Rail | 0.92 | 1 | 0.004 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| BU7244F-E2 | Rohm Semiconductor | Active | CMOS | 4 | Rail-to-Rail | 0.4 | 0.9 | 0.001 | 1 | 360 | 12 | 1.8 | 5.5 | -40 to 85 | 14-SOIC |
| BU7487F-E2 | Rohm Semiconductor | Active | CMOS | 4 | Rail-to-Rail | 10 | 10 | 0.001 | 1 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-SOIC |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Identical Specifications)
The LMV324QDR, LMV324M/NOPB, and LMV324MX/NOPB are direct substitutes for the LMV324QDRG4. All three parts are manufactured by Texas Instruments, maintain active product status, and share identical electrical specifications including 1 V/µs slew rate, 1 MHz gain bandwidth product, 15 nA input bias current, and 2.7 V to 5.5 V supply voltage range. The primary difference among these parts is packaging format: LMV324QDR is supplied in Cut Tape and Digi-Reel format, while LMV324M/NOPB is supplied in Tube format, and LMV324MX/NOPB is supplied in Cut Tape and Digi-Reel format. All three parts are ROHS3 compliant with MSL 1 rating. The LMV324M/NOPB and LMV324MX/NOPB offer higher output current per channel (160 mA) compared to the original part (40 mA), making them suitable for applications requiring increased output drive capability.
Secondary Substitutes (Active Status, Performance Variations)
The AD8544ARZ, AD8544ARZ-REEL7, and AD8544WARZ-R7 manufactured by Analog Devices Inc. are functionally equivalent alternatives with active product status. These parts maintain the same 4-circuit rail-to-rail configuration, 1 MHz gain bandwidth product, and -40°C to 125°C operating temperature range. The AD8544 series exhibits lower input bias current (4 pA versus 15 nA), lower input offset voltage (1 mV versus 1.7 mV), and slightly lower slew rate (0.92 V/µs versus 1 V/µs). Output current per channel is 30 mA, which is lower than the original LMV324QDRG4 (40 mA). All AD8544 variants are ROHS3 compliant with MSL 1 rating and support the full -40°C to 125°C temperature range.
Low-Power Alternatives (Active Status, Reduced Power Consumption)
The LPV324M/NOPB and LPV324MX/NOPB are low-power variants manufactured by Texas Instruments with active product status. These parts reduce supply current to 28 µA (versus 410 µA in the original part), making them suitable for battery-powered and ultra-low-power applications. The trade-off includes reduced slew rate (0.1 V/µs versus 1 V/µs), lower gain bandwidth product (152 kHz versus 1 MHz), and reduced output current per channel (16 mA versus 40 mA). Operating temperature range is limited to -40°C to 85°C, and maximum supply voltage is 5 V. These parts are ROHS3 compliant with MSL 1 rating.
CMOS Alternatives (Active Status, Extended Supply Range)
The BU7244F-E2 manufactured by Rohm Semiconductor is a CMOS amplifier with active product status that extends the minimum supply voltage to 1.8 V while maintaining 5.5 V maximum supply. This part offers lower input bias current (1 pA) and reduced supply current (360 µA). However, slew rate is reduced to 0.4 V/µs, gain bandwidth product is 900 kHz, and output current per channel is limited to 12 mA. Operating temperature range is -40°C to 85°C. The BU7487F-E2 is a higher-performance CMOS variant with 10 V/µs slew rate and 10 MHz gain bandwidth product, but requires minimum 3 V supply and exhibits significantly higher supply current (6 mA). Both Rohm parts are ROHS3 compliant with MSL 1 rating.
Frequently Asked Questions (FAQ)
Q: Can the LMV324QDR be used as a direct replacement for the LMV324QDRG4?
A: Yes. The LMV324QDR is a direct electrical equivalent with identical specifications across all critical parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, and supply voltage range. The only difference is packaging format (Cut Tape and Digi-Reel versus the original Digi-Reel format). Both parts are ROHS3 compliant with MSL 1 rating and support the -40°C to 125°C operating temperature range.
Q: What is the difference between LMV324M/NOPB and LMV324MX/NOPB?
A: Both parts are electrically identical with the same specifications. The primary difference is packaging: LMV324M/NOPB is supplied in Tube format, while LMV324MX/NOPB is supplied in Cut Tape and Digi-Reel format. Both offer higher output current per channel (160 mA) compared to the original LMV324QDRG4 (40 mA).
Q: When should I use the AD8544 series instead of the LMV324 series?
A: The AD8544 series is suitable when lower input bias current (4 pA versus 15 nA) and lower input offset voltage (1 mV versus 1.7 mV) are required. Both series maintain 1 MHz gain bandwidth product and -40°C to 125°C operating temperature range. The AD8544 series exhibits slightly lower slew rate (0.92 V/µs) and reduced output current per channel (30 mA versus 40 mA).
Q: Are the LPV324 parts suitable for high-speed applications?
A: No. The LPV324M/NOPB and LPV324MX/NOPB are optimized for low-power operation with reduced slew rate (0.1 V/µs) and lower gain bandwidth product (152 kHz). These parts are suitable for battery-powered and ultra-low-power applications where speed is not critical. Operating temperature range is also limited to -40°C to 85°C.
Q: What is the advantage of the BU7244F-E2 CMOS amplifier?
A: The BU7244F-E2 extends the minimum supply voltage to 1.8 V, making it suitable for single-cell battery applications. It also offers extremely low input bias current (1 pA). However, it provides reduced slew rate (0.4 V/µs), lower gain bandwidth product (900 kHz), and limited output current per channel (12 mA). Operating temperature range is -40°C to 85°C.
Q: Can I use the BU7487F-E2 for high-speed applications?
A: Yes. The BU7487F-E2 offers 10 V/µs slew rate and 10 MHz gain bandwidth product, making it suitable for higher-speed applications. However, it requires minimum 3 V supply voltage and exhibits significantly higher supply current (6 mA). Operating temperature range is -40°C to 105°C.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level rating, matching the compliance profile of the original LMV324QDRG4.
Q: What packaging options are available for the LMV324 series?
A: The LMV324 series is available in three packaging formats: Cut Tape and Digi-Reel (LMV324QDR, LMV324MX/NOPB), Tube (LMV324M/NOPB), and Tape & Reel for certain variants. All use the 14-SOIC (0.154", 3.90mm Width) package.
Q: Is the 14-SOIC package compatible across all substitute parts?
A: All substitute parts use the 14-SOIC surface-mount package. However, the Rohm BU7244F-E2 and BU7487F-E2 use a slightly wider package (0.173", 4.40mm Width) designated as 14-SOP. While both are 14-pin SOIC packages, the physical width difference may require PCB layout verification for tight spacing applications.
Q: Which substitute part offers the lowest power consumption?
A: The LPV324M/NOPB and LPV324MX/NOPB offer the lowest supply current at 28 µA (x4 channels), compared to 410 µA for the original LMV324QDRG4. These parts are optimized for battery-powered applications where power consumption is critical.
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