onsemi

LM293DMR2

LM293DMR2 Description

The LM293DMR2 is a general-purpose comparator IC designed for a wide range of applications. Manufactured by onsemi, this device is housed in an 8-MSOP package and features two independent comparators. Despite being marked as obsolete, the LM293DMR2 remains a reliable choice for many electronic designs due to its robust performance and compatibility with various voltage ranges.

LM293DMR2 Features

• Output Current: The LM293DMR2 can deliver a typical output current of 16mA at 5V, making it suitable for driving moderate loads directly.
• Low Quiescent Current: With a maximum quiescent current of 2.5mA, this IC is energy-efficient, ideal for battery-powered and low-power applications.
• Wide Supply Voltage Range: The comparator operates over a single supply voltage range of 2V to 36V and dual supply voltages of ±1V to ±18V, providing flexibility in power supply requirements.
• Low Input Bias Current: The maximum input bias current is 0.25µA at 5V, ensuring minimal loading on the input sources.
• Low Input Offset Voltage: The maximum input offset voltage is 5mV at 30V, which helps in achieving high accuracy in signal comparison.
• Surface Mount Packaging: The LM293DMR2 is available in a surface-mount package (Tape & Reel), facilitating easy integration into modern PCB designs.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the device is suitable for use in various environmental conditions without requiring special handling.
• Compliance: The LM293DMR2 is REACH unaffected, ensuring compliance with environmental regulations.

LM293DMR2 Applications

The LM293DMR2 is ideal for applications requiring reliable and efficient signal comparison. Some specific use cases include:

• Level Shifting: The wide voltage range and low offset voltage make it suitable for converting signal levels between different parts of a system.
• Window Detection: With two independent comparators, it can be used to detect when a signal falls outside a specified range, useful in monitoring and control systems.
• Battery Monitoring: The low quiescent current and wide operating voltage range make it suitable for monitoring battery levels in portable devices.
• Analog-to-Digital Conversion: The comparator can be used in conjunction with resistive dividers to create simple ADCs for digital systems.
• Oscillator Circuits: The LM293DMR2 can be used to create relaxation oscillators for timing and clock generation applications.

Conclusion of LM293DMR2

The LM293DMR2 is a versatile general-purpose comparator that offers a combination of high performance and energy efficiency. Its wide operating voltage range, low quiescent current, and low input offset voltage make it suitable for a variety of applications, from simple level detection to more complex signal processing tasks. Despite its obsolete status, the LM293DMR2 remains a reliable choice for engineers looking for a robust and flexible comparator solution. Its surface-mount packaging and compliance with environmental regulations further enhance its appeal in modern electronic designs.