ADM809ZART-REEL7

Supervisors Overview

The ADM809ZART-REEL7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single-input power rails. It operates within a supply voltage range of 1 V to 5.5 V and features a push-pull output configuration. The device provides a reset threshold voltage of 2.32 V with an accuracy of 1.5% and an overvoltage threshold of 2.35 V. It includes a fixed reset delay time of 240 ms and consumes a typical operating supply current of 60 uA. The component lacks manual reset, watchdog timer, battery backup switch, and chip enable signals. It is housed in an SOT-23-3 package and supports surface-mount installation across an industrial temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Monitors a single voltage input rail with high precision using a dedicated threshold detection mechanism.
• Generates a system reset signal via a push-pull output interface upon detecting out-of-range conditions.
• Operates efficiently at low quiescent current levels suitable for battery-powered or energy-constrained applications.

Supervisors Applications

• Microprocessor power supply supervision
• Battery-operated electronic devices
• Portable instrumentation systems

Supervisors Procurement Notes

Verify the exact suffix designation during procurement, as the provided model differs from the documented ZARTZ variant which specifies RoHS compliance. Confirm availability status, as listings indicate limited distribution or discontinuation for certain variants in this series. Ensure the ordering information matches the specific threshold voltage requirements of the design, as the ADM809 family offers multiple threshold options.

Supervisors Selection Notes

Select this component when a precise 2.32 V reset threshold is required for low-voltage monitoring applications. Consider the 240 ms reset delay and 60 uA supply current against system timing and power budget constraints. Verify that the SOT-23-3 package fits the PCB layout and that the absence of manual reset or watchdog features aligns with the system architecture.

Supervisors Part Context

This part belongs to the ADM809 series of voltage supervisors from Analog Devices. The series provides various threshold voltages and packages, including SC-70-3 and SOT-23-3. These components are classified under PMIC - Power Management ICs and serve as simple reset generators for microprocessors and memory devices without requiring external components.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided documentation. Other ADM809 variants with different thresholds or packages may require circuit re-evaluation.