ADM706SAR

Supervisors Overview

The ADM706SAR is a microprocessor supervisory circuit designed for monitoring 5 V power supplies and batteries. It features a precision voltage monitor with a threshold of 4.40 V and an independent watchdog timer with a 1.60-second timeout. The device provides a debounced manual reset input and guarantees a valid RESET signal down to VCC = 1 V. It operates with a quiescent current of 190 μA and includes a push-pull active low output.

Supervisors Feature Summary

• Integrates an independent watchdog timer with a fixed 1.60-second timeout interval for system reliability.
• Provides a debounced manual reset input compatible with TTL and CMOS logic levels.
• Ensures valid reset signals are generated even at supply voltages as low as 1 V.

Supervisors Applications

• Microprocessor systems requiring critical supply monitoring
• Computers and controllers needing battery backup supervision
• Intelligent instruments demanding reliable power-fail detection

Supervisors Procurement Notes

Verify the specific revision level, such as REV. C, against design requirements. Confirm package compatibility for the SOIC-8 surface mount configuration. Check for lead-free status if RoHS compliance is mandatory for the assembly process. Ensure the active low output polarity matches the target microprocessor reset pin requirements.

Supervisors Selection Notes

Select this component when a fixed 4.40 V threshold and a 1.60-second watchdog timeout are required. It serves as a direct upgrade for MAX705/MAX708 series applications. Consider the 190 μA quiescent current for low-power designs. Verify that the active low output type suits the system architecture compared to active high alternatives.

Supervisors Part Context

This part belongs to the ADM705/ADM706/ADM707/ADM708 family of voltage monitoring circuits. These devices are engineered for 5 V systems but can monitor lower voltage rails. The ADM706 variant specifically combines voltage supervision with an independent watchdog function in a compact SOIC-8 package.

Supervisors Replacement Considerations

The ADM706SARZ is the lead-free equivalent of the ADM706SAR. Designers upgrading from Maxim Integrated MAX706 devices should verify pinout compatibility and output polarity differences between legacy and current Analog Devices versions.