ADM693AN

Supervisors Overview

The ADM693AN is a microprocessor supervisory circuit manufactured by Analog Devices, housed in a 16-pin PDIP package for through-hole installation. It monitors a single voltage input with a maximum supply voltage of 5.5 V and an operating range from 4.5 V to 5.5 V. Key electrical parameters include an overvoltage threshold of 4.48 V, an undervoltage threshold of 4.25 V, and a reset delay time of 70 ms. The device features power-fail detection, a programmable watchdog timer, and chip enable functionality. It operates within a temperature range of -40°C to +85°C and draws current consistent with its CMOS design.

Supervisors Feature Summary

• Integrates power-fail detection and programmable watchdog timer functions within a single supervisory circuit.
• Provides precise monitoring of voltage levels with defined overvoltage and undervoltage thresholds.
• Supports manual reset control via chip enable signal for flexible system integration.

Supervisors Applications

• Microprocessor system supervision
• Voltage monitoring in embedded systems
• Power management circuits requiring watchdog functionality

Supervisors Procurement Notes

Verify the specific suffix and package type when ordering, as Analog Devices offers multiple variants including SOIC and TSSOP packages with different electrical characteristics. Confirm availability status directly with authorized distributors or the manufacturer, as supply conditions may vary. Ensure the selected part matches the required thermal and electrical specifications for the target application environment.

Supervisors Selection Notes

Select the ADM693AN when a through-hole PDIP package is required for board layout constraints. Compare the 70 ms reset delay against other series variants that may offer longer delays. Consider the fixed threshold voltages relative to the system's nominal supply rail to ensure proper triggering. Evaluate the need for manual reset capability versus automatic-only supervision options available in other models.

Supervisors Part Context

The ADM693AN belongs to the ADM693A series of voltage supervisory circuits designed for robust microprocessor protection. It complements surface-mount variants like the ADM693ARZ by providing a through-hole alternative. The component integrates essential monitoring functions typically found in dedicated PMIC supervisory ICs, serving as a critical interface between power supplies and digital logic.

Supervisors Replacement Considerations

The MAX693ACWE+T serves as a functional equivalent from Analog Devices' Maxim Integrated line, offering similar supervisory capabilities in a surface-mount package. Verify pin compatibility and electrical parameter alignment before substitution. Other ADM693 series variants may differ in package type or reset delay times.