onsemi

LM2903N

LM2903N Description

The LM2903N is a general-purpose comparator IC designed by onsemi, featuring two differential comparators in an 8-pin DIP package. This through-hole mounted device is suitable for a wide range of applications due to its robust performance and versatile operating voltage range. The LM2903N is capable of operating from a single supply voltage of 2V to 36V or dual supplies of ±1V to ±18V, making it highly adaptable for various electronic systems. It offers a maximum input offset voltage of 7mV at 5V, ensuring precise comparison of input signals. The device also boasts a low quiescent current of up to 2.5mA and an input bias current of 0.25µA at 5V, contributing to its energy efficiency. The LM2903N can deliver a typical output current of 16mA at 5V, making it suitable for driving a variety of loads. Despite being marked as obsolete, the LM2903N remains a reliable choice for applications requiring a simple yet effective comparator solution.

LM2903N Features

• Dual Differential Comparators: The LM2903N includes two independent differential comparators, allowing for simultaneous comparison of multiple input signals.
• Wide Operating Voltage Range: With a single supply voltage range of 2V to 36V and dual supply range of ±1V to ±18V, the LM2903N is highly versatile and can be used in a variety of power supply configurations.
• Low Input Offset Voltage: A maximum input offset voltage of 7mV at 5V ensures accurate comparison of input signals, minimizing errors in signal processing.
• Low Quiescent and Input Bias Currents: The device features a maximum quiescent current of 2.5mA and an input bias current of 0.25µA at 5V, making it suitable for low-power applications.
• High Output Current Capability: The LM2903N can provide a typical output current of 16mA at 5V, enabling it to drive various types of loads effectively.
• Through-Hole Mounting: The through-hole package makes it easy to integrate into printed circuit boards, ensuring reliable mechanical and electrical connections.
• Moisture Sensitivity Level 1: The LM2903N is rated for unlimited exposure to moisture, making it suitable for applications in humid environments.
• Compliance with Industry Standards: The device is REACH unaffected and RoHS3 compliant, adhering to environmental and safety regulations.

LM2903N Applications

The LM2903N is ideal for applications requiring precise signal comparison and control. Some specific use cases include:

• Signal Processing: Used in systems where accurate comparison of analog signals is necessary, such as in audio processing circuits or sensor signal conditioning.
• Power Management: Suitable for monitoring and controlling power levels in various electronic devices, ensuring stable operation within specified voltage ranges.
• Control Systems: Ideal for use in feedback loops and control systems where the comparator's output can drive actuators or control signals based on input conditions.
• Automotive and Industrial Electronics: Given its wide operating voltage range and robust performance, the LM2903N can be used in automotive and industrial applications where reliability and precision are critical.
• Consumer Electronics: The device's low power consumption and high output current capability make it suitable for consumer electronics where energy efficiency and performance are key considerations.

Conclusion of LM2903N

Despite being marked as obsolete, the LM2903N remains a valuable component for designers seeking a reliable and versatile comparator IC. Its wide operating voltage range, low input offset voltage, and low quiescent current make it suitable for a variety of applications, from signal processing to power management. The LM2903N's ability to deliver high output current and its compliance with industry standards further enhance its appeal. For applications requiring precise signal comparison and control, the LM2903N offers a cost-effective and dependable solution.