STMicroelectronics

LM393AD

LM393AD Description

The LM393AD is a general-purpose comparator IC designed by STMicroelectronics, featuring two independent comparators housed in an 8-pin SOIC package. This device is suitable for a wide range of applications due to its versatile operating voltage range and low power consumption. Despite being marked as obsolete, the LM393AD remains a reliable choice for many electronic designs, particularly where low-cost and high-performance comparators are required.

LM393AD Features

• Dual Comparators: The LM393AD includes two independent comparators, allowing for multiple comparison functions within a single package.
• Wide Operating Voltage Range: It operates from a single supply voltage of 2V to 36V or dual supplies of ±1V to ±18V, making it suitable for various power supply configurations.
• Low Quiescent Current: With a maximum quiescent current of 2.5mA, the LM393AD is energy-efficient, ideal for battery-powered or low-power applications.
• Low Input Offset Voltage: The maximum input offset voltage is 2mV at 30V, ensuring high accuracy in voltage comparisons.
• Low Input Bias Current: The maximum input bias current is 0.1µA at 5V, which minimizes the loading effect on the input sources.
• High Output Current: The typical output current is 18mA at 5V, providing robust drive capability for various loads.
• Surface Mount Package: The 8-pin SOIC package is suitable for surface mount technology, facilitating easy integration into modern PCB designs.
• Moisture Sensitivity Level: MSL 1 (Unlimited) ensures the device is suitable for storage and handling without special precautions.
• Operating Temperature Range: The LM393AD operates reliably within a temperature range of 0°C to 70°C, making it suitable for a variety of environmental conditions.
• Compliance: The device is REACH unaffected and RoHS3 compliant, adhering to environmental and safety standards.

LM393AD Applications

The LM393AD is well-suited for applications requiring precise voltage level detection and comparison. Its dual comparator design allows for simultaneous monitoring of two different signals, making it ideal for:

• Window Comparators: Detecting when a signal falls outside a specified voltage range.
• Zero-Crossing Detectors: Identifying when a signal crosses a reference voltage level.
• Level Shifters: Converting signal levels between different voltage domains.
• Pulse Width Modulation (PWM) Controllers: Generating PWM signals based on input voltage levels.
• Battery Monitoring: Monitoring battery voltage levels to ensure safe operation and prevent over-discharge.
• Signal Processing: Processing analog signals in various electronic systems, such as audio, video, and control systems.

Conclusion of LM393AD

The LM393AD is a versatile and reliable general-purpose comparator IC that offers a wide range of features and benefits. Its dual comparator design, wide operating voltage range, low power consumption, and high accuracy make it an excellent choice for a variety of applications. Despite being marked as obsolete, the LM393AD remains a valuable component for designers seeking a cost-effective and high-performance solution. Its compliance with environmental and safety standards ensures it meets modern requirements for electronic components.