ADM8690AN

Supervisors Overview

The ADM8690AN is a microprocessor supervisory circuit manufactured by Analog Devices Inc. in an 8-pin DIP package. It provides power supply monitoring and battery control functions, including µP reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The device features a reset threshold voltage of 4.65V, operates within a temperature range of -40°C to +85°C, and consumes low power with a standby current of 400 nA.

Supervisors Feature Summary

• Integrates complete single-chip solutions for power supply monitoring and battery control in microprocessor systems
• Provides automatic battery backup power switching with high current drive capability
• Includes a configurable watchdog timer with multiple timeout options
• Features extremely fast gating of chip enable signals

Supervisors Applications

• Microprocessor Systems
• Computers
• Controllers
• Intelligent Instruments
• Automotive Systems

Supervisors Procurement Notes

Verify the specific suffix 'AN' indicates the plastic DIP-8 package variant when sourcing replacements. Confirm RoHS compliance status as indicated by the 'Z' suffix in related part numbers like ADM8690ANZ. Ensure the application requires the fixed 4.65V threshold voltage characteristic of this specific model variant.

Supervisors Selection Notes

Select this component for designs requiring integrated power supervision without external discrete components. Consider the DIP-8 package constraint for through-hole assembly requirements. Evaluate the 4.65V reset threshold against the system's operating voltage rails to ensure proper triggering during brown-out conditions.

Supervisors Part Context

This part belongs to the ADM8690–ADM8695 family of supervisory circuits designed as upgrades for earlier models like the ADM690. The family offers various configurations to satisfy microprocessor system requirements, combining reset generation, watchdog functionality, and battery management into a single compact solution.

Supervisors Replacement Considerations

Direct substitutes include other members of the ADM869x family such as ADM8691 or ADM8692, provided their specific reset thresholds match the design requirements. Cross-reference with MAX690 series equivalents if pin compatibility is critical.