ADM691AR-REEL

Supervisors Overview

The ADM691AR-REEL is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range up to 5.5 V and monitors a single input with a threshold of 4.65 V. The device features an open-drain output, a watchdog timer, and battery backup switching capabilities. It provides a reset delay time of 200 ms and includes power-failure detection. The component is housed in a SOIC-16 package for surface-mount installation and functions across an operating temperature range from -40°C to +85°C.

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.
• Includes CMOS RAM write protection and power-failure warning capabilities.

Supervisors Applications

• Microprocessor Systems
• Computers
• Controllers
• Automotive Systems

Supervisors Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm exact packaging and tolerance specifications. Ensure the selected variant matches the required thermal and electrical parameters for the target application environment. Cross-reference datasheet revisions to confirm feature availability and pinout compatibility before procurement.

Supervisors Selection Notes

Select this component when a low-power supervisory circuit with integrated watchdog and battery backup is required. Consider the ±2% tolerance on reset thresholds and the specific reset delay characteristics. Evaluate the SOIC-16 package constraints and ensure the open-drain output configuration aligns with the system logic requirements.

Supervisors Part Context

This part belongs to the ADM691A/ADM693A/ADM800L/ADM800L family of supervisory circuits designed as upgrades for the MAX691A/93A/800M series. These devices offer comprehensive power management functions including µP reset, backup-battery switchover, and watchdog timers in a compact form factor suitable for space-constrained designs.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.