Overview
The LM324N, manufactured by Texas Instruments, is a low-power quad operational amplifier designed for a wide range of applications. It is part of the next-generation versions of the industry-standard operational amplifiers LM324 and LM2902. This device provides outstanding value for cost-sensitive applications, featuring low offset voltage, common-mode input range to ground, and high differential input voltage capability. The LM324N is unity-gain stable and offers high ESD protection and integrated EMI and RF filters, making it suitable for rugged and environmentally challenging applications.
Key Specifications
| Parameter | Test Conditions | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage Range | Single Supply: 3V to 32V, Dual Supply: ±1.5V to ±16V | - | - | V |
| Input Offset Voltage (VIO) | VCC = 5 V to MAX, VIC = VICRmin, VO = 1.4 V | 3 mV | 9 mV | mV |
| Input Offset Current (IIO) | VO = 1.4 V | 2 nA | 50 nA | nA |
| Input Bias Current (IIB) | VO = 1.4 V | -20 nA | -500 nA | nA |
| Common-Mode Input Voltage Range (VICR) | VCC = 5 V to MAX | 0 to VCC - 1.5 V | - | V |
| Bandwidth | - | 1 MHz | - | Hz |
| Quiescent Current per Amplifier | - | 240 µA | - | µA |
| ESD Rating | - | 2 kV (HBM), 1.5 kV (CDM) | - | kV |
Key Features
- Low input offset voltage: ±2mV (BA version) / 3mV (B version).
- Wide supply voltage range: 3V to 36V (B, BA versions) for single or dual power supplies.
- High ESD protection: 2kV (HBM), 1.5kV (CDM).
- Integrated EMI and RF filters.
- Low input bias current: 50nA maximum (across –40°C to 125°C).
- Common-mode input voltage range includes ground.
- Input voltage differential can be driven up to supply voltage.
- Unity-gain stable with internal frequency compensation.
- Low supply current drain: 700 µA, essentially independent of the supply voltage.
- Large output voltage swing: 0 V to V+ - 1.5 V.
- Compatible with all forms of logic and suitable for battery operation.
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.
- Battery-powered devices and portable systems.
- Signal amplification and complex analog processing tasks).
Q & A
- What is the supply voltage range of the LM324N?
The LM324N can operate from a single power supply of 3V to 32V or from dual supplies of ±1.5V to ±16V.
- What is the input offset voltage of the LM324N?
The input offset voltage is ±2mV for the BA version and 3mV for the B version.
- What is the ESD rating of the LM324N?
The ESD rating is 2kV (HBM) and 1.5kV (CDM)).
- Does the LM324N have integrated EMI and RF filters?
Yes, the LM324N includes integrated EMI and RF filters).
- What is the quiescent current per amplifier for the LM324N?
The quiescent current per amplifier is typically 240 µA).
- Is the LM324N suitable for battery-operated devices?
Yes, it is suitable due to its low power drain and wide supply voltage range).
- How many operational amplifiers are included in the LM324N package?
The LM324N includes four operational amplifiers in a single package).
- What is the bandwidth of the LM324N?
The bandwidth is 1 MHz, temperature compensated).
- Can the LM324N operate with a single power supply?
Yes, it can operate with a single power supply over a wide voltage range).
- What are some common applications of the LM324N?
Common applications include power supplies, mobile chargers, desktop PCs, air conditioners, and battery-powered devices).
