Overview
The LM324M, produced by Texas Instruments, is a quad operational amplifier designed for a wide range of applications. It is part of the LM324 series, which is known for its high gain, internally frequency compensated operational amplifiers. This device is particularly useful in systems requiring multiple op-amps due to its compact packaging and robust performance characteristics. The LM324M operates from a single power supply over a wide voltage range, making it versatile for various electronic circuits.
Key Specifications
| Parameter | Unit | Typical | Maximum |
|---|---|---|---|
| Supply Voltage Range | V | 3 to 32 | - |
| Input Offset Voltage | mV | 2 | 3 |
| Input Bias Current | nA | 45 | 100 |
| Input Common-Mode Voltage Range | V | 0 to VCC - 1.5 | - |
| Output Voltage Swing | V | 0 to VCC - 1.5 | - |
| Bandwidth (Unity Gain) | MHz | 1 | - |
| Slew Rate | V/μs | 0.5 | - |
| Supply Current | mA | 0.7 to 1.2 | 3 |
| Operating Temperature Range | °C | 0 to 70 | - |
Key Features
- Internally Frequency Compensated for Unity Gain
- Large DC Voltage Gain: 100 dB
- Wide Power Supply Range: 3V to 32V (or ±1.5V to ±16V)
- Low Input Bias Current: 45 nA (typical)
- Low Input Offset Voltage: 2 mV (typical)
- Input Common-Mode Voltage Range Includes Ground
- Large Output Voltage Swing: 0V to VCC - 1.5V
- High Common-Mode Rejection Ratio (65 dB to 85 dB)
- Temperature Compensated Unity Gain Cross Frequency and Input Bias Current
- Power Drain Suitable for Battery Operation
Applications
- Transducer Amplifiers and DC Gain Blocks
- Consumer Electronics: Audio Processors, TV Tuners, and other Audio/Video Processing Equipment
- Industrial Automation: Control Systems and Sensor Operations
- Telecommunications: Signal Conditioning, Modulation/Demodulation Systems
- Electronic Manufacturing: Testing and Development Equipment
- Power Supplies and Mobile Chargers
- Desktop PC and Motherboard
- Home Appliances: Washers, Dryers, Refrigerators
- AC Inverters, String Inverters, Central Inverters, and Voltage Frequency Drives
- Uninterruptible Power Supplies (UPS)
Q & A
- What is the supply voltage range of the LM324M?
The LM324M operates from a single power supply over a wide voltage range of 3V to 32V, or from dual supplies ±1.5V to ±16V.
- What is the typical input offset voltage of the LM324M?
The typical input offset voltage of the LM324M is 2 mV.
- What is the input bias current of the LM324M?
The input bias current of the LM324M is typically 45 nA.
- What is the bandwidth of the LM324M at unity gain?
The bandwidth of the LM324M at unity gain is 1 MHz.
- What is the slew rate of the LM324M?
The slew rate of the LM324M is 0.5 V/μs).
- What is the operating temperature range of the LM324M?
The operating temperature range of the LM324M is from 0°C to 70°C).
- Is the LM324M suitable for battery operation?
- What are some common applications of the LM324M?
The LM324M is commonly used in transducer amplifiers, DC gain blocks, consumer electronics, industrial automation, telecommunications, and electronic manufacturing).
- Does the LM324M have built-in frequency compensation?
- What is the common-mode rejection ratio of the LM324M?
The common-mode rejection ratio of the LM324M ranges nominally from 65 dB to 85 dB).
