AD790JNZ

Overview

The AD790JNZ is a fast, precision voltage comparator manufactured by Analog Devices Inc. It operates from a single 5 V or dual ±15 V supply and features a maximum propagation delay of 45 ns. The device includes an onboard latch for synchronous operation and offers CMOS or TTL compatible outputs. It is housed in an 8-lead plastic dual in-line package (PDIP) with a commercial temperature rating of 0°C to 70°C.

Feature Summary

• Features a low-glitch output stage that minimizes current spikes and reduces power supply disturbances to prevent unwanted oscillations.
• Incorporates built-in hysteresis and a wide input voltage range to handle both slow, low-level signals and fast, large-amplitude signals effectively.
• Includes a latching function that retains the comparator decision at the output when triggered, suitable for synchronous applications.

Applications

• Zero-Crossing Detectors
• Overvoltage Detectors
• Pulse-Width Modulators
• Precision Rectifiers
• Discrete A/D Converters

Procurement Notes

Verify the specific ordering suffix to confirm the package type and compliance status. The 'Z' suffix indicates a RoHS compliant part. Confirm the temperature grade matches the application requirements, as the J variant is rated for commercial temperatures. Ensure the datasheet version aligns with the manufacturing date code for accurate electrical specifications.

Selection Notes

Select this component for general-purpose analog signal processing where speed and precision are balanced. It is suitable for data acquisition systems requiring a versatile comparator with low power dissipation relative to its speed class. Consider the onboard latch if synchronous sampling is required. Verify supply voltage compatibility, as it supports both single and dual supply configurations.

Part Context

The AD790 series consists of fast, precise voltage comparators fabricated using Analog Devices' Complementary Bipolar process. The AD790JNZ specifically denotes the commercial grade version available in an 8-lead PDIP package. This family is designed for high versatility, offering unique capabilities such as ground-referred inputs in single-supply mode and handling large differential voltages in dual-supply mode.

Replacement Considerations

Direct replacement parts within the same package and temperature range include the AD790JN. For surface mount applications, the AD790JR or AD790JRZ variants offer equivalent performance in an SOIC package. Higher performance grades like the AD790K or AD790S provide industrial or military temperature ratings respectively.