ADM695SQ

Supervisors Overview

The ADM695SQ is a microprocessor supervisory circuit from Analog Devices, designed for complete single-chip power supply monitoring and battery control. It features a precision voltage monitor with a threshold of 4.65 V and an overvoltage threshold of 5 V. The device operates within a supply voltage range up to 5.5 V and includes a watchdog timer, backup battery switchover, and CMOS RAM write protection. It utilizes open collector outputs and offers a reset delay time of 50 ms. The component supports through-hole mounting in a CDIP-8 package and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates microprocessor reset, backup battery switchover, and watchdog timer functions on a single chip
• Provides precision voltage monitoring with specified thresholds for power failure warning
• Supports automatic battery backup power switching with low switch-on resistance
• Includes CMOS RAM write protection capabilities for data integrity

Supervisors Applications

• Microprocessor systems requiring comprehensive power supervision
• Computers and controllers needing reliable reset mechanisms
• Intelligent instruments demanding precise voltage monitoring
• Automotive systems operating under varying environmental conditions

Supervisors Procurement Notes

Verify availability status as the part may be subject to limited supply or factory special orders. Confirm that the CDIP-8 through-hole package meets mechanical design requirements. Ensure the operating temperature range aligns with system specifications. Check RoHS compliance details if required by regulatory standards. Validate pinout compatibility during integration planning.

Supervisors Selection Notes

Select this component when integrated supervisory functions including watchdog and backup switching are required. Consider the CDIP-8 package for through-hole assembly needs. Evaluate the 50 ms reset delay against system timing constraints. Verify that the open collector output type suits the logic interface. Assess the 1.7% accuracy specification for monitoring precision requirements.

Supervisors Part Context

The ADM695SQ belongs to the ADM690–ADM695 family of supervisory circuits manufactured by Analog Devices. This family provides complete single-chip solutions for power supply monitoring and battery control in microprocessor systems. The SQ suffix typically denotes a military-grade or extended temperature variant within the product line, offering enhanced reliability compared to commercial versions.

Supervisors Replacement Considerations

The MAX695SQ is a public confirmed substitute part number within the same functional family. Both components share similar supervisory capabilities and pin configurations. Verify electrical parameter compatibility before substitution.