Overview
The LM324NG, part of the LM324 series, is a low-cost, quad operational amplifier produced by onsemi. These amplifiers are designed with true differential inputs and offer several advantages over standard operational amplifier types, particularly in single supply applications. They can operate at supply voltages ranging from 3.0 V to 32 V, with quiescent currents significantly lower than those of the MC1741. This makes them highly versatile and efficient for various electronic circuits.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage Range | 3.0 V to 32 V | |
| Quiescent Current | 1.2 mA (VCC = 5.0 V, VO = 0 V, RL = ∞) | |
| Input Bias Current | 100 nA Maximum (LM324A) | |
| Common Mode Rejection Ratio (CMRR) | 70 dB to 100 dB | RS ≤ 10 kΩ |
| Power Supply Rejection Ratio (PSRR) | 65 dB to 100 dB | |
| Operating Temperature Range | 0°C to +70°C (LM324/LM324A/LM324E) | |
| Output Voltage Range | Includes the negative power supply voltage |
Key Features
- True Differential Input Stage: Enhances the amplifier's performance in various applications.
- Single Supply Operation: Can operate from 3.0 V to 32 V, making it versatile for different power supply conditions.
- Low Input Bias Currents: Maximum of 100 nA, reducing the impact of input bias on the circuit.
- Four Amplifiers Per Package: Increases functionality and reduces component count in designs.
- Internally Compensated: Simplifies circuit design by eliminating the need for external compensation components.
- Common Mode Range Extends to Negative Supply: Eliminates the need for external biasing components in many applications.
- Industry Standard Pinouts: Eases integration into existing designs.
- ESD Clamps on the Inputs: Increases ruggedness without affecting device operation.
- Pb-Free Packages Available: Compliant with environmental regulations.
- Short Circuited Protected Outputs: Enhances reliability by protecting against short circuits.
Applications
The LM324NG is suitable for a wide range of applications due to its versatility and robust features. Some common uses include:
- Audio and Video Circuits: Its low noise and high gain make it ideal for audio and video signal processing.
- Industrial Control Systems: The amplifier's ability to operate over a wide supply voltage range and its ruggedness make it suitable for industrial environments.
- Automotive Systems: The NCV2902 variant is qualified for automotive use, highlighting the LM324 series' reliability in harsh conditions.
- Medical Devices: Its low power consumption and high performance make it a good choice for medical equipment.
- General Purpose Amplification: Its industry-standard pinouts and internal compensation make it a reliable choice for various general-purpose amplification needs.
Q & A
- What is the supply voltage range of the LM324NG?
The LM324NG can operate at supply voltages ranging from 3.0 V to 32 V. - What is the quiescent current of the LM324NG?
The quiescent current is approximately 1.2 mA at VCC = 5.0 V, VO = 0 V, and RL = ∞. - What is the input bias current of the LM324NG?
The maximum input bias current is 100 nA. - What is the common mode rejection ratio (CMRR) of the LM324NG?
The CMRR ranges from 70 dB to 100 dB, depending on the conditions. - Is the LM324NG protected against short circuits?
Yes, the LM324NG has short-circuited protected outputs. - What is the operating temperature range of the LM324NG?
The operating temperature range is from 0°C to +70°C for the LM324/LM324A/LM324E variants. - Are Pb-free packages available for the LM324NG?
Yes, Pb-free packages are available. - What are some common applications of the LM324NG?
Common applications include audio and video circuits, industrial control systems, automotive systems, medical devices, and general-purpose amplification. - Does the LM324NG have ESD protection?
Yes, the LM324NG has ESD clamps on the inputs to increase ruggedness. - How many amplifiers are included in the LM324NG package?
The LM324NG includes four amplifiers per package.
