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AD790JN

AD790JN Description

The AD790JN from Analog Devices Inc. is a high-performance, single-channel comparator with an integrated latch, designed for precision signal comparison in demanding applications. Housed in an 8-pin DIP package, this obsolete but robust component operates over a 0°C to 70°C temperature range, making it suitable for industrial and commercial environments. It supports single-supply (4.5V–7V) or dual-supply (±2.25V–±16.5V) operation, offering flexibility in system design. With a 50ns max propagation delay, it ensures rapid response times, while its CMOS/TTL-compatible outputs simplify interfacing with digital logic.

AD790JN Features

• High Immunity to Noise: 95dB CMRR and 90dB PSRR minimize errors in noisy environments.
• Low Input Offset Voltage: 1.5mV max at 5V enhances accuracy in precision circuits.
• Integrated Latch: Enables stable output states for synchronous systems.
• Low Bias Current: 5µA max input bias current reduces loading effects on signal sources.
• 500µV Hysteresis: Prevents output chatter near threshold voltages.
• Wide Supply Range: Supports both single and dual supplies for versatile deployment.
• Through-Hole Mounting: Simplifies prototyping and legacy system integration.

AD790JN Applications

The AD790JN excels in applications requiring fast, reliable signal comparison:

• Threshold Detection: Ideal for overvoltage/undervoltage monitoring in power supplies.
• Analog-to-Digital Interfaces: Acts as a front-end comparator for ADCs in data acquisition systems.
• Industrial Control Systems: Used in PLCs and motor control for real-time decision-making.
• Instrumentation: Precision measurement equipment benefiting from its low offset and hysteresis.
• Legacy System Maintenance: Suitable for repairing or upgrading older electronics due to its through-hole package.

Conclusion of AD790JN

The AD790JN stands out for its speed, precision, and versatility, despite its obsolete status. Its high noise immunity, latch functionality, and wide supply range make it a reliable choice for critical comparison tasks. While newer alternatives exist, the AD790JN remains valuable for legacy designs, prototyping, and applications demanding proven performance. Engineers seeking a balance of speed, accuracy, and robustness in a through-hole package will find this comparator a compelling solution.