ADM691AARU

Supervisors Overview

The ADM691AARU is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for microprocessor monitoring applications. It operates within a supply voltage range up to 5.5 V and features a threshold voltage of 4.65 V with an overvoltage threshold of 4.75 V. The device monitors one input and provides open drain and push-pull output types. It includes a watchdog timer, battery backup switching, and power failure detection capabilities. The reset delay time is specified at 280 ms, and the chip enable signal supports active control. Operating temperatures range from -40 C to +85 C, with a typical operating current of 100 uA.

Supervisors Feature Summary

• Integrated watchdog timer for system reliability
• Battery backup switching functionality
• Power failure detection capability
• Chip enable signal support

Supervisors Applications

• Microprocessor reset circuits
• CMOS RAM write protection
• Battery backup systems

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential obsolescence status. Confirm package integrity and pin alignment against TSSOP-16 specifications. Review datasheet revisions for any functional updates or environmental compliance changes prior to integration into production designs.

Supervisors Selection Notes

Select this component when precise voltage supervision is required for single-input systems. Consider the specific reset delay and output drive requirements against system timing constraints. Evaluate thermal performance within the specified operating temperature range and ensure compatibility with existing CMOS process technologies used in the target application design.

Supervisors Part Context

Part of the ADM691A series, this supervisory circuit complements other power management ICs from Analog Devices. It shares functional similarities with MAX691 variants but differs in packaging and specific electrical characteristics. The series targets embedded systems requiring robust power monitoring without manual reset inputs.

Supervisors Replacement Considerations

MAX691AMJE serves as a verified substitute offering similar supervisory functions in a CDIP-Narrow-16 package. Verify pinout compatibility and electrical parameter alignment before substitution.