ADM708SAN

Supervisors Overview

The ADM708SAN is a microprocessor supervisory circuit designed for monitoring power supplies and battery levels. It features a precision voltage monitor with a threshold of 4.40 V, ensuring reliable operation in 5 V systems. The device provides an active high reset output with a fixed pulse width of 200 ms. It includes a debounced manual reset input and operates within a supply voltage range of 1 V to 5.5 V. The quiescent current is typically 190 μA, supporting low-power applications across an industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides precise supervision of 5 V power supplies with a guaranteed valid reset signal down to 1 V supply voltage.
• Features an active high reset output with a fixed 200 ms pulse width to ensure adequate reset time for microprocessors.
• Includes a debounced manual reset input compatible with TTL and CMOS logic levels.

Supervisors Applications

• Microprocessor system power monitoring
• Critical microprocessor supply supervision
• Controllers and intelligent instruments

Supervisors Procurement Notes

Verify the specific suffix 'SAN' against official Analog Devices documentation to confirm package type and temperature grade. Confirm end-of-life status and last-time-buy dates as this component series may be discontinued. Ensure compatibility with existing PCB footprints and electrical requirements before procurement.

Supervisors Selection Notes

Select this component when an active high reset output is required for 5 V systems. Compare the 4.40 V threshold against other variants like the ADM705/ADM707 (4.65 V) or ADM706 (4.40 V but different output polarity). Verify that the 200 ms reset pulse width meets the target microprocessor's timing specifications.

Supervisors Part Context

The ADM708 belongs to the ADM705-ADM708 family of low-cost microprocessor supervisory circuits from Analog Devices. These devices are engineered to replace older generations such as the MAX705-MAX708 series. The family offers various thresholds and output polarities to suit different system architectures.

Supervisors Replacement Considerations

MAX708CSA+ and MAX708SESA+T are functionally similar supervisory circuits from Analog Devices/Maxim Integrated with comparable thresholds and packages.