onsemi

LM393AMX

LM393AMX Description

The LM393AMX is a general-purpose comparator IC designed for a wide range of applications where precise voltage comparison is required. Manufactured by onsemi, this dual differential comparator features an 8-pin SOIC package, making it suitable for surface-mount applications. Despite its obsolescence, the LM393AMX remains a reliable choice due to its performance robust and compliance with industry standards.

Key technical specifications include a typical output current of 18mA at 5V, ensuring robust drive capabilities for various loads. The quiescent current is kept low at a maximum of 2.5mA, which is beneficial for power-sensitive designs. The input bias current is extremely low, at a maximum of 0.25µA at 5V, minimizing the impact on the input signal sources. The input offset voltage is also well-controlled, with a maximum of 2mV at 5V, ensuring accurate comparisons.

The LM393AMX operates over a wide supply voltage range, from 2V to 36V for single supply and ±1V to ±18V for dual supply, making it versatile for different power supply configurations. It is also compliant with REACH and ROHS3 standards, ensuring environmental and safety compliance. The moisture sensitivity level (MSL) is 1, indicating unlimited storage life under specified conditions, which enhances reliability in manufacturing processes.

LM393AMX Features

• Dual Differential Comparators: The LM393AMX includes two independent differential comparators, allowing for simultaneous comparison of multiple signals.
• Wide Operating Voltage Range: With a supply voltage range of 2V to 36V for single supply and ±1V to ±18V for dual supply, it is adaptable to various power supply configurations.
• Low Quiescent Current: A maximum quiescent current of 2.5mA ensures minimal power consumption, making it suitable for battery-powered or low-power applications.
• Low Input Bias Current: At a maximum of 0.25µA at 5V, the low input bias current minimizes loading effects on the input signal sources.
• Low Input Offset Voltage: A maximum input offset voltage of 2mV at 5V ensures accurate voltage comparisons, critical for precision applications.
• Robust Drive Output Capability: With a typical output current of 18mA at 5V, the LM393AMX can drive various loads effectively.
• Compliance with Industry Standards: The LM393AMX is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Surface-Mount Packaging: The 8-pin SOIC package is suitable for surface-mount technology (SMT), facilitating automated assembly processes.

LM393AMX Applications

The LM393AMX is ideal for applications requiring precise voltage comparison and robust performance. Some specific use cases include:

• Level Shifting: Used in digital circuits to shift voltage levels between different logic families.
• Window Detection: Employed in systems where voltage levels need to be monitored within a specific range, such as power supply monitoring.
• Signal Conditioning: Used to condition analog signals before they are processed by digital circuits, ensuring accurate signal representation.
• Battery Management: Ideal for monitoring battery voltage levels to ensure operation safe and prevent overcharging or undercharging.
• Motor Control: Used in motor control applications to compare feedback signals and control motor speed or position accurately.

Conclusion of LM393AMX

Despite its obsolescence, the LM393AMX remains a reliable and versatile comparator IC suitable for a wide range of applications. Its low quiescent current, low input bias current, and low input offset voltage make it ideal for precision voltage comparison tasks. The wide operating voltage range and robust output drive capability further enhance its adaptability. Compliance with REACH and ROHS3 standards ensures it meets environmental and safety requirements. The LM393AMX is particularly well-suited for applications such as level shifting, window detection, signal conditioning, battery management, and motor control. Its surface-mount packaging and moisture sensitivity level of 1 make it suitable for modern manufacturing processes.