ADM691AN

Supervisors Overview

The ADM691AN is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range of 0 V to 5.5 V and features a threshold voltage of 4.65 V. The device monitors one input and provides an open-drain output. Key electrical parameters include a reset delay time of 200 ms, a maximum power dissipation of 842 mW, and a standby current of 100 uA. It supports overvoltage detection at 4.75 V and undervoltage detection at 4.5 V. The component is housed in a PDIP-16 package and is designed for through-hole mounting.

Supervisors Feature Summary

• Integrates complete single-chip solutions for power supply monitoring and battery control functions in microprocessor systems.
• Provides automatic battery backup power switching and fast onboard gating of chip enable signals.

Supervisors Applications

• Microprocessor Systems
• Computers
• Controllers

Supervisors Procurement Notes

Verify the specific suffix (e.g., ANZ) against the manufacturer's current product lineup, as legacy part numbers may have been superseded or discontinued. Confirm that the PDIP-16 through-hole package aligns with your PCB design requirements. Ensure the 4.65 V threshold meets your system's voltage supervision needs. Check for RoHS compliance status if required for your manufacturing process. Consult official distributor channels for availability and lead times.

Supervisors Selection Notes

Select this component when a low-power, precision voltage monitor with integrated watchdog and backup switching is required. The 200 ms reset delay suits applications tolerant of standard power-up sequences. Consider the PDIP-16 package for prototyping or high-reliability through-hole designs. Evaluate the 100 uA standby current for battery-backed systems. Compare against the MAX691A family for pin-compatible upgrades or feature variations.

Supervisors Part Context

The ADM691AN belongs to the ADM691A/ADM693A/ADM800L/ADM800M family of supervisory circuits from Analog Devices. This family offers comprehensive power management functions on a single chip, including µP reset, CMOS RAM write protection, and power-failure warning. The ADM691 series serves as an upgrade path for the earlier MAX691A/93A/800M products, maintaining compatibility while offering refined specifications.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include ADM691AARN and ADM691AARNZ. These variants share the same core functionality but differ in packaging or reel configuration. Verify pinout compatibility before substitution.