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ADM9690 - Power Supply and Watchdog Timer Monitoring Circuit

General Description

The ADM9690 contains a voltage monitoring comparator and a watchdog timer monitor.

It is designed to monitor the 5 V power supply to a microprocessor and the microprocessor operation via a watchdog function.

The voltage monitoring comparator monitors the voltage on VMON.

Key Features

  • Precision Voltage Monitor (4.31 V) Watchdog Timeout Monitor Selectable Watchdog Timeout.
  • 0.75 ms, 1.5 ms, 12.5 ms, 25 ms Two RESET Outputs.

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Datasheet Details

Part number ADM9690
Manufacturer Analog Devices
File Size 76.38 KB
Description Power Supply and Watchdog Timer Monitoring Circuit
Datasheet download datasheet ADM9690 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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a FEATURES Precision Voltage Monitor (4.31 V) Watchdog Timeout Monitor Selectable Watchdog Timeout—0.75 ms, 1.5 ms, 12.5 ms, 25 ms Two RESET Outputs APPLICATIONS Microprocessor Systems Computers Printers Controllers Intelligent Instruments Power Supply and Watchdog Timer Monitoring Circuit ADM9690 FUNCTIONAL BLOCK DIAGRAM VCC VMON 4.31V ADM9690 OSC SEL1 OSC SEL2 WATCHDOG TIMEBASE RESET(1) TIMER RESET(2) TIMER RESET(1) RESET(2) WATCHDOG INPUT (WDI) WATCHDOG TRANSITION DETECTOR GND GENERAL DESCRIPTION The ADM9690 contains a voltage monitoring comparator and a watchdog timer monitor. It is designed to monitor the 5 V power supply to a microprocessor and the microprocessor operation via a watchdog function. The voltage monitoring comparator monitors the voltage on VMON.