Overview
The LM324N is a quadruple operational amplifier (op-amp) produced by Texas Instruments (TI). This internal-frequency-compensated op-amp is designed to operate from a single power supply over a wide range of voltages or from dual supplies. It features large DC voltage gain, wide bandwidth, and a low power supply current drain, making it versatile for various applications.
The LM324N is part of the LM324 series, which includes several versions with improved specifications, such as the LM324B and LM324BA. These versions offer enhanced performance characteristics like lower input offset voltage and improved ESD ratings.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 Channel |
| Supply Voltage - Max | 32 V |
| Supply Voltage - Min | 3 V |
| Maximum Dual Supply Voltage | ±16 V |
| Minimum Dual Supply Voltage | ±1.5 V |
| Output Current per Channel | 20 mA |
| Vos - Input Offset Voltage | 2 mV (typical), 7 mV (maximum) |
| Ib - Input Bias Current | 45 nA (typical), 250 nA (maximum) |
| Operating Supply Current | 700 µA (typical), 175 µA (per amplifier) |
| Minimum Operating Temperature | 0°C |
| Maximum Operating Temperature | +70°C |
| GBP - Gain Bandwidth Product | 1.2 MHz |
| SR - Slew Rate | 500 mV/us |
| CMRR - Common Mode Rejection Ratio | 80 dB |
| PSRR - Power Supply Rejection Ratio | 100 dB |
| Package | PDIP-14 (Dual In-Line Package with 14 pins) |
Key Features
- Internally frequency compensated for unity gain
- Large DC voltage gain of 100 dB
- Wide bandwidth (unity gain) of 1 MHz (temperature-compensated)
- Wide power supply range: single supply (3V-32V), or dual supplies (±1.5V to ±16V)
- Very low supply current drain (700 µA) - essentially independent of supply voltage
- Low input biasing current (45 nA) and offset voltage (2 mV)
- Input common-mode voltage range includes ground, and differential input voltage range equal to the power supply voltage
- Large output voltage swing (0V to V+ - 1.5V)
- Eliminates the need for dual supplies, allowing direct sensing near GND and VOUT
- Compatible with all forms of logic
- Power drain suitable for battery operation
Applications
- Amplifiers and buffers
- Voltage regulators and controllers
- Data converters (A/D, D/A)
- Signal conditioners for analog sensors
- Op-amp based instrumentation amplifiers
- Power supplies and voltage regulators
- Transducer amplifiers, DC gain blocks, and conventional op-amp circuits in single power supply systems
- Merchant network and server power supply units, multi-function printers, desktop PC and motherboard, indoor and outdoor air conditioners, washers, dryers, and refrigerators
Q & A
- What is the LM324N?
The LM324N is a quadruple operational amplifier (op-amp) produced by Texas Instruments, designed to operate from a single or dual power supply.
- What is the supply voltage range for the LM324N?
The LM324N can operate with a single supply voltage of 3V to 32V or dual supplies of ±1.5V to ±16V.
- What is the input bias current of the LM324N?
The input bias current of the LM324N is typically 45 nA and can be up to 250 nA maximum.
- What is the output current per channel of the LM324N?
The output current per channel of the LM324N is 20 mA.
- What is the common-mode rejection ratio (CMRR) of the LM324N?
The CMRR of the LM324N is 80 dB.
- What are some common applications of the LM324N?
Common applications include amplifiers, buffers, voltage regulators, data converters, signal conditioners, and power supplies.
- Is the LM324N suitable for battery operation?
Yes, the LM324N has a low power supply current drain, making it suitable for battery operation.
- What is the operating temperature range of the LM324N?
The operating temperature range of the LM324N is from 0°C to +70°C.
- What is the gain bandwidth product (GBP) of the LM324N?
The GBP of the LM324N is 1.2 MHz.
- Can the LM324N operate with a single power supply?
Yes, the LM324N can operate with a single power supply voltage, eliminating the need for dual supplies.
- Is the LM324N compatible with all forms of logic?
Yes, the LM324N is compatible with all forms of logic.
