Texas Instruments

LM293AD  

Linear Comparators

LM293AD Description

The LM293AD is a general-purpose linear comparator IC designed by Texas Instruments. This device features two differential comparators housed in an 8-pin SOIC package, making it suitable for surface-mount applications. The LM293AD is known for its robust performance and wide operating voltage range, capable of handling single supply voltages from 2V to 36V and dual supply voltages from ±1V to ±18V. It offers a maximum input offset voltage of 2mV at 30V, ensuring precise signal comparison. The quiescent current kept is low at a maximum of 2.5mA, and the input bias current is as low as 0.25µA at 5V, which minimizes power consumption and enhances efficiency. The LM293AD is REACH unaffected and ROHS3 compliant, adhering to stringent environmental and safety standards. With a moisture sensitivity level (MSL) of 1 (unlimited), it is highly reliable in various environmental conditions. The product is currently marked as obsolete by Texas Instruments, but it remains a valuable component for legacy systems and specific applications where its unique features are required.

LM293AD Features

• Dual Differential Comparators: The LM293AD includes two independent differential comparators, providing flexibility in signal processing and comparison tasks.
• Wide Operating Voltage Range: Capable of operating from 2V to 36V for single supply and ±1V to ±18V for dual supply, making it versatile for a variety of power supply configurations.
• Low Input Offset Voltage: A maximum input offset voltage of 2mV at 30V ensures high accuracy in signal comparison, critical for precision applications.
• Low Quiescent Current: With a maximum quiescent current of 2.5mA, the LM293AD is energy-efficient, making it suitable for low-power designs.
• Low Input Bias Current: The maximum input bias current of 0.25µA at 5V minimizes the impact on the input signal, preserving signal integrity.
• Surface-Mount Package: The 8-pin SOIC package is ideal for compact and high-density PCB designs, facilitating easy integration into modern electronic systems.
• Environmental Compliance: The LM293AD is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Moisture Sensitivity Level 1: With an MSL of 1 (unlimited), the device is highly reliable and suitable for use in various environmental conditions without moisture-related issues.

LM293AD Applications

The LM293AD is well-suited for a range of applications due to its versatile operating voltage range, low power consumption, and high accuracy. Some specific use cases include:

• Signal Processing: Ideal for comparing and processing analog signals in various electronic systems, such as audio and video processing circuits.
• Power Management: Used in power supply monitoring and control circuits to ensure stable and accurate voltage regulation.
• Industrial Control: Suitable for industrial automation and control systems where precise signal comparison and processing are required.
• Consumer Electronics: Applied in consumer electronics for signal comparison and control functions, such as in digital-to-analog converters and sensor interfaces.
• Legacy Systems: Given its obsolete status, the LM293AD is particularly valuable for maintaining and upgrading legacy systems where its unique features are essential.

Conclusion of LM293AD

The LM293AD from Texas Instruments is a robust and versatile linear comparator IC with a wide operating voltage range, low power consumption, and high accuracy. Its dual differential comparators and surface-mount package make it suitable for a variety of applications, from signal processing to power management. Despite being marked as obsolete, the LM293AD remains a reliable choice for specific applications and legacy systems where its unique features are crucial. Its environmental compliance and high reliability further enhance its appeal in the electronics industry.

LM293AD Documents

Download datasheets and manufacturer documentation for LM293AD

Datasheets :

LM193,293,393(A), 2903(V) Datasheet      

PCN Obsolescence/ EOL :

LM293/393/2903 obs 03/Nov/2022      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018       Design 25/Feb/2022