STMicroelectronics

LM258N

LM258N Description

The LM258N is a general-purpose operational amplifier designed for a wide range of applications. Manufactured by STMicroelectronics, this dual-channel op-amp is housed in a through-hole 8-pin mini DIP package, making it suitable for both prototyping and production environments. Despite its status as an obsolete product, the LM258N remains a reliable choice for many applications due to its robust performance and compatibility with various electronic systems.

The LM258N operates over a wide supply voltage range, from a minimum of 3V to a maximum of 30V, ensuring flexibility in power supply requirements. It features a gain bandwidth product of 1.1 MHz, which allows for high-frequency signal processing and amplification. The amplifier's slew rate of 0.6V/µs ensures fast response times, making it suitable for applications requiring rapid signal changes.

LM258N Features

• Wide Supply Voltage Range: The LM258N can operate from 3V to 30V, making it versatile for different power supply configurations.
• High Gain Bandwidth Product: With a gain bandwidth product of 1.1 MHz, the LM258N can handle high-frequency signals effectively.
• Low Input Bias Current: The input bias current of 20 nA ensures minimal loading on the input signal source, preserving signal integrity.
• Low Input Offset Voltage: A voltage input offset of 5 mV guarantees accurate amplification and minimal error in signal processing.
• Dual-Channel Design: The LM258N features two independent operational amplifier channels, each capable of sourcing or sinking up to 40 mA of current.
• Low Supply Current: Each channel consumes only 700µA, making the LM258N energy-efficient.
• Automotive Grade: Certified for automotive applications, the LM258N meets stringent reliability and performance standards.
• Compliance and Safety: The LM258N is REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory compliance.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the LM258N is not sensitive to moisture, reducing the risk of damage during storage and handling.

LM258N Applications

The LM258N is ideal for a variety of applications due to its general-purpose design and robust performance characteristics. Some specific use cases include:

• Signal Amplification: The LM258N's high gain bandwidth product and low input offset voltage make it suitable for amplifying weak signals in audio and instrumentation systems.
• Filter Design: Its dual-channel capability allows for the creation of complex filter circuits, such as active filters in signal processing applications.
• Automotive Electronics: Certified for automotive use, the LM258N can be employed in various automotive electronic systems, including sensor interfaces and control circuits.
• Power Supply Circuits: The wide supply voltage range and low supply current make the LM258N a good fit for power supply circuits, where it can be used for voltage regulation and monitoring.
• Educational and Prototyping: The through-hole package and general-purpose nature of the LM258N make it an excellent choice for educational purposes and prototyping in electronics labs.

Conclusion of LM258N

The LM258N, despite being an obsolete product, continues to offer reliable performance and versatility for a wide range of applications. Its wide supply voltage range, low input bias current, and high gain bandwidth product make it a valuable component in signal processing, amplification, and filter design. The dual-channel design and automotive-grade certification further enhance its utility in various electronic systems. While newer models may offer advanced features, the LM258N remains a trusted choice for engineers and hobbyists alike, providing a balance of performance, reliability, and cost-effectiveness.