ADM809RAKS-REEL

Supervisors Overview

The ADM809RAKS-REEL is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single-input power rails. It operates within a supply voltage range up to 5.5 V and features a push-pull output configuration. The device provides reset delay times of 840 ms and includes overvoltage detection capabilities with thresholds such as 2.66 V. Available threshold voltages include 2.5 V, 3 V, 3.3 V, and 5 V. It functions in an industrial temperature range from -40°C to +125°C with a typical operating current of 60 µA. The component is housed in an SC-70-3 package.

Supervisors Feature Summary

• Provides hardware-based supervision for microprocessor systems by monitoring a single voltage input rail.
• Generates a reset signal via a push-pull output when the monitored voltage falls below or exceeds specified thresholds.
• Includes built-in overvoltage detection to protect against power supply anomalies without requiring external components.

Supervisors Applications

• Microprocessor system reset generation
• Battery-powered equipment voltage monitoring
• Portable instrumentation power supervision

Supervisors Procurement Notes

Verify availability status directly with authorized distributors, as this specific reel variant may be subject to limited supply or discontinuation. Confirm the exact threshold voltage suffix matches design requirements, as the base part number covers multiple voltage options. Ensure the SC-70-3 package footprint aligns with PCB layout specifications before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a compact supervisory solution is required for low-power applications. The SC-70-3 package offers space efficiency compared to larger packages. Choose based on the specific threshold voltage needed (2.5 V, 3 V, 3.3 V, or 5 V) and confirm that the 840 ms reset delay meets system timing constraints. Verify compatibility with the target operating temperature range.

Supervisors Part Context

This part belongs to the ADM809 series of voltage supervisors from Analog Devices. The series is characterized by low quiescent current and small form factors suitable for portable electronics. The RAKS suffix indicates the specific package type and tape/reel packaging format, distinguishing it from other variants like JARTZ or SART which may differ in package style or threshold precision.

Supervisors Replacement Considerations

Check for ADM809JARTZ-REEL7 or ADM809SART-REEL7 if package changes are acceptable. Verify that alternative parts maintain compatible threshold voltages and reset delay characteristics. Ensure pinout compatibility between SC-70-3 and potential replacement packages like SOT-23-3.