ADM690SQ

Supervisors Overview

The ADM690SQ is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range of up to 5.5 V and features a threshold voltage of 4.65 V. The device provides a reset delay time of 50 ms and includes an integrated watchdog timer with battery backup switch functionality. It utilizes open collector output type and monitors one input channel. The component is housed in a CDIP-8 package designed for through-hole installation. It supports an operating temperature range from -40 C to +85 C with an accuracy of 1.7%. The maximum power dissipation is specified at 400 mW, and the typical working supply current is 1 mA.

Supervisors Feature Summary

• Integrates a watchdog timer for system reliability monitoring
• Includes battery backup switch capability for data retention
• Provides precise voltage monitoring with defined threshold levels
• Features open collector output for flexible interface compatibility

Supervisors Applications

• Microprocessor reset circuits
• Battery backup systems
• CMOS RAM write protection
• Power failure warning applications

Supervisors Procurement Notes

Verify availability status as distribution channels may indicate limited supply or discontinuation. Confirm RoHS compliance details, as some records indicate non-compliance. Ensure the CDIP-8 through-hole package matches design requirements. Validate that the specific suffix SQ corresponds to the intended temperature grade and packaging format before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a dedicated supervisory circuit with integrated watchdog timing is required. The fixed 4.65 V threshold suits standard 5 V logic systems. Consider the through-hole CDIP-8 package if PCB layout constraints favor manual assembly or high mechanical stability over surface mount alternatives. Verify that the open collector output aligns with the target microprocessor reset input specifications.

Supervisors Part Context

The ADM690 belongs to the ADM690 series of supervisory circuits designed for complete power supply management. It serves as a specialized IC for ensuring system stability during power transitions. The SQ suffix typically denotes a specific temperature range and package variant within the Analog Devices portfolio, distinguishing it from other commercial or industrial grade options in the same functional family.

Supervisors Replacement Considerations

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