Overview
The LM324KD, produced by Texas Instruments, is a quadruple operational amplifier that belongs to the next-generation LM324 series. This device is designed to provide high performance and reliability in a wide range of applications. It features four independent high-gain, frequency-compensated operational amplifiers, making it suitable for various electronic systems that require multiple amplification stages.
The LM324KD is an improved version of the industry-standard LM324, offering enhanced specifications such as lower input offset voltage, higher ESD protection, and integrated EMI and RF filters. This makes it an excellent choice for cost-sensitive applications that demand robust performance.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 3 | - | 36 | V |
| Input Offset Voltage | - | 3 | - | mV |
| Input Bias Current | - | 50 | - | nA |
| Common-Mode Input Voltage Range | 0 | - | VCC - 1.5 | V |
| Differential Input Voltage Range | - | - | VCC | V |
| ESD Protection | - | - | 2 kV (HBM), 1.5 kV (CDM) | - |
| Quiescent Current per Amplifier | - | 240 | - | µA |
| High-Level Output Voltage (RL = 2 kΩ) | 22 | - | 26 | V |
| Low-Level Output Voltage (RL = 2 kΩ) | 5 | - | 20 | V |
| Large-Signal Differential Voltage Amplification | 100 | - | - | V/mV |
Key Features
- Improved Specifications: The LM324KD offers lower input offset voltage (typically 3 mV), lower input bias current (maximum 50 nA), and higher ESD protection (2 kV HBM, 1.5 kV CDM).
- Wide Supply Voltage Range: Operates from 3 V to 36 V, making it versatile for various power supply conditions.
- Common-Mode Input Voltage Range: Includes the negative supply voltage, allowing for a wide range of input signals.
- Differential Input Voltage Range: Can be driven up to the supply voltage, enhancing the device's flexibility.
- Integrated EMI and RF Filters: Provides robust performance in environmentally challenging applications.
- Unity-Gain Stable: Ensures stable operation in unity-gain configurations.
Applications
- Power Supplies and Mobile Chargers: Suitable for use in power supply units and mobile chargers due to its wide supply voltage range and robust performance.
- Desktop PC and Motherboard: Used in various computer components requiring multiple amplification stages.
- Home Appliances: Found in washers, dryers, refrigerators, and air conditioners due to its reliability and performance.
- AC Inverters and Voltage Frequency Drives: Utilized in AC inverters, string inverters, central inverters, and voltage frequency drives.
- Uninterruptible Power Supplies (UPS): Used in UPS systems to ensure continuous operation during power outages.
Q & A
- What is the supply voltage range of the LM324KD?
The LM324KD operates from a supply voltage range of 3 V to 36 V.
- What is the typical input offset voltage of the LM324KD?
The typical input offset voltage is 3 mV.
- What is the maximum input bias current of the LM324KD?
The maximum input bias current is 50 nA.
- Does the LM324KD have ESD protection?
Yes, it has ESD protection of 2 kV (HBM) and 1.5 kV (CDM).
- What is the common-mode input voltage range of the LM324KD?
The common-mode input voltage range includes the negative supply voltage up to VCC - 1.5 V.
- Can the differential input voltage range be driven up to the supply voltage?
Yes, the differential input voltage range can be driven up to the supply voltage.
- Is the LM324KD unity-gain stable?
Yes, the LM324KD is unity-gain stable.
- What are some common applications of the LM324KD?
Common applications include power supplies, mobile chargers, desktop PCs, motherboards, home appliances, AC inverters, and uninterruptible power supplies.
- Does the LM324KD have integrated EMI and RF filters?
Yes, it has integrated EMI and RF filters to provide robust performance in environmentally challenging applications.
- What is the quiescent current per amplifier of the LM324KD?
The quiescent current per amplifier is typically 240 µA.
