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ADM690A - Microprocessor Supervisory Circuits

General Description

The ADM690A/ADM692A/ADM802L/M/ADM805L/M family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems.

These functions include µP reset, backup battery switchover, watchdog timer, and power failure warning.

Key Features

  • Precision Supply Voltage Monitor 4.65 V ADM690A/ADM802L/ADM805L 4.40 V ADM692A/ADM802M/ADM805M Reset Assertion Down to 1 V V CC Reset Timeout.
  • 200 ms Watchdog Timer.
  • 1.6 s 100 ␮ A Quiescent Supply Current Automatic Battery Backup Power Switching Voltage Monitor for Power Fail ؎ 2% Power Fail Accuracy on ADM802L/M Space-Saving MicroSOIC Package (ADM690A).

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Other Datasheets by Analog Devices

Part Number Description
ADM690 Microprocessor Supervisory Circuits
ADM691 Microprocessor Supervisory Circuits
ADM691A Microprocessor Supervisory Circuits
ADM692 Microprocessor Supervisory Circuits
ADM692A Microprocessor Supervisory Circuits

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 Microprocessor Supervisory Circuits ADM690A/ADM692A/ADM802L/M/ADM805L/M FUNCTIONAL BLOCK DIAGRAM VBATT BATTERY SWITCHOVER VCC VOUT FEATURES Precision Supply Voltage Monitor 4.65 V ADM690A/ADM802L/ADM805L 4.40 V ADM692A/ADM802M/ADM805M Reset Assertion Down to 1 V V CC Reset Timeout—200 ms Watchdog Timer—1.6 s 100 ␮ A Quiescent Supply Current Automatic Battery Backup Power Switching Voltage Monitor for Power Fail ؎ 2% Power Fail Accuracy on ADM802L/M Space-Saving MicroSOIC Package (ADM690A) APPLICATIONS Microprocessor Systems Computers Controllers Intelligent Instruments 4.65V* RESET GENERATOR RESET (RESET) WATCHDOG INPUT (WDI) WATCHDOG TRANSITION DETECTOR (1.6s) POWER FAIL INPUT (PFI) 1.25V ADM690A ADM692A ADM802L ADM802M ADM805L ADM805M POWER FAIL OUTPUT (PFO) *4.