ADM698AR

Supervisors Overview

The ADM698AR is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It monitors the 5 V VCC power supply and generates a RESET pulse during power-up, power-down, and low voltage brown-out conditions. The device features a watchdog timer with a reset delay time of 200 ms. It operates within a supply voltage range of 3 V to 5.5 V, with a threshold voltage of 4.65 V and an overvoltage threshold of 4.73 V. The operating supply current is 1.95 mA. It utilizes a push-pull output type and lacks manual reset or chip enable signals. The component is housed in a 16-pin SOIC package.

Supervisors Feature Summary

• Provides power supply monitoring for microprocessor systems
• Integrates watchdog timing functionality
• Generates reset pulses during brown-out conditions

Supervisors Applications

• Microprocessor system supervision
• Power supply monitoring circuits
• Watchdog timer implementations

Supervisors Procurement Notes

Verify the specific suffix AR indicates the 16-pin SOIC package variant when sourcing. Confirm availability status as distribution channels may list limited stock or end-of-life status. Ensure the required threshold voltage of 4.65 V aligns with the target 5 V system design. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Supervisors Selection Notes

Select this component when a dedicated supervisor with integrated watchdog is required for 5 V logic systems. The 16-pin SOIC package suits surface mount applications requiring more pins than standard DIP variants. Consider the 200 ms reset delay for system stability requirements. Verify that the 1.95 mA supply current fits the power budget constraints of the application.

Supervisors Part Context

The ADM698 belongs to the ADM698/ADM699 series of supervisory circuits designed for robust power management in digital systems. These devices combine voltage monitoring and timing functions into a single monolithic solution. The AR suffix specifically denotes the plastic small outline package (SOIC) form factor, distinguishing it from through-hole alternatives like the ANZ variant.

Supervisors Replacement Considerations

The ADM698ANZ serves as a direct pin-compatible alternative in a PDIP-8 package, though pin count differs. Cross-reference with ADM699 variants if different threshold characteristics are needed. Verify package dimensions and thermal dissipation capabilities when substituting with other SOIC supervisors.