ADM823SYKS-R7

Supervisors Overview

The ADM823SYKS-R7 is a supervisory circuit manufactured by Analog Devices Inc., designed to monitor power supply voltage levels and ensure system integrity. It operates within a supply voltage range of 1.8 V to 5.5 V and features a fixed reset threshold voltage of 2.62 V. The device provides a push-pull active-low output with a typical reset delay time of 200 ms. It is housed in a compact SC-70-5 package, suitable for space-constrained applications, and supports an operating temperature range from -40 °C to +125 °C.

Supervisors Feature Summary

• Monitors power supply voltage levels to detect under-voltage conditions
• Provides manual reset capability for system recovery
• Features a fixed reset threshold voltage for precise monitoring
• Delivers an active-low push-pull reset output signal

Supervisors Applications

• Portable equipment requiring low-power supervision
• Battery-powered systems needing voltage monitoring
• Microprocessor and microcontroller reset circuits
• Automotive electronics operating in harsh environments

Supervisors Procurement Notes

Verify the specific suffix 'SY' confirms the 2.62 V threshold voltage, as other variants in the ADM823 family offer different thresholds. Confirm the 'R7' suffix indicates tape-and-reel packaging if reel handling is required. Ensure the SC-70-5 package dimensions match your PCB footprint constraints. Check current availability status, as this component may be subject to limited supply or obsolescence notices from the manufacturer.

Supervisors Selection Notes

Select this component when a fixed 2.62 V reset threshold is required for single-supply monitoring. Consider the SC-70-5 package size against available board space. Evaluate the 200 ms reset delay against system startup timing requirements. Compare power consumption and operating temperature range (-40 °C to +125 °C) against application environmental conditions. Verify compatibility with the target microprocessor's reset input requirements.

Supervisors Part Context

The ADM823SYKS-R7 belongs to the ADM823/ADM824/ADM825 family of supervisory circuits from Analog Devices. These devices are engineered to monitor power supplies and code execution integrity. The ADM823 variant specifically includes manual reset functionality. This family is widely used in embedded systems where reliable power management and system reset are critical for stable operation.

Supervisors Replacement Considerations

Direct substitutes include ADM823SZKS-R7 (2.63 V threshold) and ADM823TYKSZ-R7 (3.08 V threshold), provided the threshold voltage matches the design requirement. Other ADM823 variants with different thresholds may require circuit redesign. Verify pinout compatibility and package dimensions before substitution.