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LM324DR2G Equivalent & Substitute Parts
Part Overview
The LM324DR2G is a general-purpose operational amplifier manufactured by onsemi, configured as a 4-circuit integrated circuit in a 14-SOIC surface mount package. This device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). The LM324DR2G serves applications requiring low-cost, general-purpose amplification across industrial, consumer, and automotive domains. Substitute parts are identified when equivalent electrical performance, package compatibility, and supply chain availability align with the original specification parameters.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 90 | nA |
| Voltage - Input Offset | 2 | mV |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 32 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LM324DR2G are classified based on strict alignment with the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 4
- Package / Case: 14-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span (Min): 3 V or lower
- Voltage - Supply Span (Max): 30 V or higher
- Current - Output / Channel: 40 mA or higher
- RoHS Status: ROHS3 Compliant
- Product Status: Active
Direct Substitutes maintain identical electrical performance within the specified operating envelope. These parts are interchangeable without circuit redesign.
Similar Substitutes share the same package, mounting type, and core functionality but may exhibit different electrical characteristics (slew rate, gain bandwidth product, input bias current, input offset voltage, or operating temperature range). Selection of similar substitutes requires verification that the application tolerates the parameter variations.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Output / Ch (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LM324DR2G | onsemi | General Purpose | 4 | 1 | 90 | 2 | 40 | 3 | 32 | 0 to 70 | 14-SOIC |
| LM324D | STMicroelectronics | General Purpose | 4 | 1.2 | 20 | 2 | 40 | 3 | 30 | 0 to 70 | 14-SOIC |
| ADA4004-4ARZ | Analog Devices Inc. | General Purpose | 4 | 12 | 40 | 0.04 | 10 | 10 | 30 | -40 to 125 | 14-SOIC |
| ADA4004-4ARZ-R7 | Analog Devices Inc. | General Purpose | 4 | 12 | 40 | 0.04 | 10 | 10 | 30 | -40 to 125 | 14-SOIC |
| ADTL084ARZ-REEL | Analog Devices Inc. | J-FET | 4 | 5 | 0.002 | 1.5 | 27 | 8 | 36 | -40 to 125 | 14-SOIC |
| ADTL084ARZ-REEL7 | Analog Devices Inc. | J-FET | 4 | 5 | 0.002 | 1.5 | 27 | 8 | 36 | -40 to 125 | 14-SOIC |
| AS324AMTR-G1 | Diodes Incorporated | General Purpose | 4 | — | 20 | 2 | 40 | 3 | 36 | -40 to 85 | 14-SOIC |
| AS324MTR-E1 | Diodes Incorporated | General Purpose | 4 | — | 20 | 2 | 40 | 3 | 36 | -40 to 85 | 14-SOIC |
| AS324MTR-G1 | Diodes Incorporated | General Purpose | 4 | — | 20 | 2 | 40 | 3 | 36 | -40 to 85 | 14-SOIC |
| BA10324AF-E2 | Rohm Semiconductor | General Purpose | 4 | 0.5 | 20 | 2 | 35 | 3 | 32 | -40 to 85 | 14-SOIC |
| BA2902F-E2 | Rohm Semiconductor | General Purpose | 4 | 0.5 | 20 | 2 | 30 | 3 | 32 | -40 to 125 | 14-SOIC |
Engineering Selection Recommendations
Direct Substitutes (Highest Compatibility):
The LM324D (STMicroelectronics) qualifies as a direct substitute. It maintains general-purpose amplifier classification, 4-circuit configuration, identical input offset voltage (2 mV), matching output current capability (40 mA), and overlapping supply voltage range (3 V to 30 V). Both devices are RoHS3 compliant and Active status. The LM324D exhibits lower input bias current (20 nA versus 90 nA) and marginally higher gain bandwidth product (1.2 MHz versus 1 MHz), representing performance improvements without functional incompatibility.
Compatible Substitutes (General Purpose Category):
The AS324AMTR-G1, AS324MTR-E1, and AS324MTR-G1 (Diodes Incorporated) are compatible general-purpose 4-circuit amplifiers in 14-SOIC packages. These devices match input offset voltage (2 mV), output current (40 mA), and supply voltage minimum (3 V). The AS324 series extends maximum supply voltage to 36 V, exceeding the LM324DR2G specification. All three variants are RoHS3 compliant and Active status. Operating temperature range extends to -40°C to 85°C, providing broader low-temperature coverage than the original specification (0°C to 70°C).
The BA10324AF-E2 (Rohm Semiconductor) is a general-purpose 4-circuit amplifier with matching input offset voltage (2 mV) and supply voltage range (3 V to 32 V). Output current per channel is 35 mA, slightly below the 40 mA specification. This device is RoHS3 compliant and Active status with operating temperature range -40°C to 85°C.
The BA2902F-E2 (Rohm Semiconductor) is a general-purpose 4-circuit amplifier with identical input offset voltage (2 mV) and supply voltage range (3 V to 32 V). Output current per channel is 30 mA, below the 40 mA specification. This device is RoHS3 compliant and Active status with extended operating temperature range (-40°C to 125°C).
Performance-Enhanced Alternatives (Similar Category):
The ADA4004-4ARZ and ADA4004-4ARZ-R7 (Analog Devices Inc., iPolar® series) are general-purpose 4-circuit amplifiers with significantly enhanced electrical performance. These devices exhibit 12 MHz gain bandwidth product (12× the original), superior input offset voltage (40 µV versus 2 mV), and lower input bias current (40 nA versus 90 nA). However, maximum output current per channel is 10 mA, substantially below the 40 mA requirement. Minimum supply voltage is 10 V, exceeding the 3 V specification. These devices are suitable only for applications where the reduced output current and elevated minimum supply voltage are acceptable. Operating temperature range extends to -40°C to 125°C. Both variants are RoHS3 compliant and Active status.
Specialized Alternative (J-FET Input):
The ADTL084ARZ-REEL and ADTL084ARZ-REEL7 (Analog Devices Inc.) are J-FET input 4-circuit amplifiers in 14-SOIC packages. These devices feature extremely low input bias current (2 pA versus 90 nA), superior slew rate (20 V/µs), and extended supply voltage range (8 V to 36 V). However, the J-FET input topology represents a different amplifier class with distinct performance characteristics. Minimum supply voltage is 8 V, exceeding the 3 V specification. Output current per channel is 27 mA, below the 40 mA requirement. These devices are suitable for applications requiring ultra-low input bias current and high-speed operation. Both variants are RoHS3 compliant and Active status with operating temperature range -40°C to 125°C.
Frequently Asked Questions (FAQ)
Q: Can the LM324D directly replace the LM324DR2G without circuit modification?
A: Yes. The LM324D (STMicroelectronics) is a direct substitute. Both devices are general-purpose 4-circuit amplifiers in 14-SOIC packages with identical input offset voltage (2 mV), matching output current capability (40 mA), and overlapping supply voltage specifications (3 V to 32 V for LM324DR2G; 3 V to 30 V for LM324D). The LM324D exhibits improved input bias current (20 nA versus 90 nA) and marginally higher gain bandwidth product (1.2 MHz versus 1 MHz), representing performance enhancements. Both devices are RoHS3 compliant and Active status.
Q: What is the primary difference between the LM324DR2G and the ADA4004-4ARZ?
A: Both are general-purpose 4-circuit amplifiers in 14-SOIC packages. The ADA4004-4ARZ offers superior performance with 12 MHz gain bandwidth product (versus 1 MHz), lower input offset voltage (40 µV versus 2 mV), and lower input bias current (40 nA versus 90 nA). However, the ADA4004-4ARZ has reduced output current per channel (10 mA versus 40 mA) and requires minimum supply voltage of 10 V (versus 3 V for the LM324DR2G). The ADA4004-4ARZ is suitable for precision, low-power applications; the LM324DR2G is suitable for general-purpose, higher-output-current applications.
Q: Are the AS324 variants (AS324AMTR-G1, AS324MTR-E1, AS324MTR-G1) interchangeable with the LM324DR2G?
A: Yes, with extended operating temperature capability. All three AS324 variants are general-purpose 4-circuit amplifiers in 14-SOIC packages with matching input offset voltage (2 mV) and output current (40 mA). Supply voltage range is 3 V to 36 V, exceeding the LM324DR2G specification (3 V to 32 V). Operating temperature range is -40°C to 85°C, providing broader low-temperature coverage than the original specification (0°C to 70°C). All variants are RoHS3 compliant and Active status. Substitution is valid for applications within the specified operating envelope.
Q: Why does the BA2902F-E2 have lower output current (30 mA) than the LM324DR2G (40 mA)?
A: The BA2902F-E2 is a general-purpose 4-circuit amplifier with different internal design optimization. While it maintains identical input offset voltage (2 mV) and supply voltage range (3 V to 32 V), the output current per channel is specified at 30 mA. This device is suitable for applications requiring output currents up to 30 mA per channel. Applications requiring 40 mA output current per channel should use the LM324DR2G, LM324D, or AS324 variants.
Q: Can the ADTL084ARZ-REEL replace the LM324DR2G in all applications?
A: No. The ADTL084ARZ-REEL is a J-FET input amplifier with fundamentally different characteristics. While both are 4-circuit amplifiers in 14-SOIC packages, the ADTL084ARZ-REEL has minimum supply voltage of 8 V (versus 3 V for the LM324DR2G) and output current per channel of 27 mA (versus 40 mA). The ADTL084ARZ-REEL is suitable for applications requiring ultra-low input bias current (2 pA) and high-speed operation (20 V/µs slew rate). Applications requiring 3 V minimum supply voltage and 40 mA output current should use the LM324DR2G or compatible general-purpose substitutes.
Q: What is the difference between the ADA4004-4ARZ and ADA4004-4ARZ-R7?
A: Both devices are identical in electrical performance and specifications. The primary difference is packaging: ADA4004-4ARZ is supplied in Tube packaging, while ADA4004-4ARZ-R7 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Electrical characteristics, operating temperature range (-40°C to 125°C), and RoHS3 compliance are identical. Selection between the two variants depends on procurement and assembly requirements.
Q: Are the AS324AMTR-G1, AS324MTR-E1, and AS324MTR-G1 electrically identical?
A: Yes, all three AS324 variants are electrically identical general-purpose 4-circuit amplifiers with matching specifications: input bias current (20 nA), input offset voltage (2 mV), output current (40 mA), supply voltage range (3 V to 36 V), and operating temperature range (-40°C to 85°C). All are RoHS3 compliant and Active status. The designations reflect different manufacturing or packaging batches. Substitution among these three variants is valid without performance impact.
Q: What is the moisture sensitivity level (MSL) significance for the LM324DR2G and its substitutes?
A: The LM324DR2G has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Most direct and compatible substitutes (LM324D, AS324 variants, BA10324AF-E2, BA2902F-E2, ADTL084ARZ variants) also have MSL 1. The ADA4004 variants have MSL 3 (168 Hours), requiring controlled humidity storage and handling within 168 hours of package opening. For applications with extended storage or humid environments, MSL 1 devices are preferred.
Q: Can the BA10324AF-E2 be used in applications requiring 40 mA output current per channel?
A: No. The BA10324AF-E2 is specified for 35 mA output current per channel, below the 40 mA requirement of the LM324DR2G. Applications requiring 40 mA output current per channel should use the LM324DR2G, LM324D, or AS324 variants (AS324AMTR-G1, AS324MTR-E1, AS324MTR-G1).
Q: What is the significance of the 14-SOIC package width specification (0.154" versus 0.173")?
A: The LM324DR2G uses a 14-SOIC package with 0.154" (3.90mm) width. The BA10324AF-E2 and BA2902F-E2 use 14-SOP packages with 0.173" (4.40mm) width. While both are surface mount packages with 14 pins, the slightly wider SOP package may require PCB layout verification to ensure compatibility with existing footprints designed for the narrower SOIC package. Consult PCB design guidelines and component datasheets for precise footprint compatibility.
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