Overview
The LM324DRG4, produced by Texas Instruments, is a next-generation version of the industry-standard operational amplifier (op amp) LM324. This device includes four high-voltage (36V) op amps, making it suitable for a wide range of applications. The LM324B and LM2902B versions offer improved specifications and are drop-in replacements for all versions of the LM224, LM324, and LM2902. These op amps are unity-gain stable and provide outstanding value for cost-sensitive applications, featuring low offset voltage, high differential input voltage capability, and a common-mode input range to ground.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (D), 14 pins |
| Operating Temperature Range (°C) | 0 to 70 |
| Supply Voltage Range | 3V to 36V (B, BA versions) |
| Input Offset Voltage | ±2mV (BA version), ±3mV (B version) |
| ESD Rating | 2kV (HBM), 1.5kV (CDM) |
| Input Bias Current | 50nA maximum (across –40°C to 125°C) |
| Common-Mode Input Voltage Range | Includes V– |
| Quiescent Current per Amplifier | 240µA (typical) |
Key Features
- Next-generation LM324B and LM2902B versions with improved specifications
- Drop-in replacements for all versions of LM224, LM324, and LM2902
- Low input offset voltage: ±2mV (BA version) / ±3mV (B version)
- High ESD rating: 2kV (HBM), 1.5kV (CDM)
- Integrated RF and EMI filters for enhanced noise rejection
- Low input bias current: 50nA maximum
- Common-mode input voltage range includes V–
- Input voltage differential can be driven up to supply voltage
Applications
- Merchant network and server power supply units
- Multi-function printers
- Power supplies and mobile chargers
- Desktop PC and motherboard
- Indoor and outdoor air conditioners
- Washers, dryers, and refrigerators
- AC inverters, string inverters, central inverters, and voltage frequency drives
- Uninterruptible power supplies
Q & A
- What is the supply voltage range of the LM324DRG4? The supply voltage range is 3V to 36V for B and BA versions.
- What is the input offset voltage of the LM324DRG4? The input offset voltage is ±2mV for BA versions and ±3mV for B versions.
- What is the ESD rating of the LM324DRG4? The ESD rating is 2kV (HBM) and 1.5kV (CDM).
- Can the LM324DRG4 be used in rugged environments? Yes, it features high ESD ratings and integrated EMI and RF filters, making it suitable for rugged, environmentally challenging applications.
- What is the common-mode input voltage range of the LM324DRG4? The common-mode input voltage range includes V–.
- Can the LM324DRG4 replace older versions of LM224, LM324, and LM2902? Yes, the LM324B and LM2902B versions are drop-in replacements for all versions of these devices.
- What is the quiescent current per amplifier of the LM324DRG4? The quiescent current per amplifier is 240µA (typical).
- What are some common applications of the LM324DRG4? Common applications include power supplies, mobile chargers, desktop PCs, air conditioners, and uninterruptible power supplies.
- Is the LM324DRG4 unity-gain stable? Yes, the LM324B and LM2902B devices are unity-gain stable.
- What is the maximum input bias current of the LM324DRG4? The maximum input bias current is 50nA across –40°C to 125°C.
