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ADM692A:  Microprocessor Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.4V Threshold Voltage, Active Low Reset and 250mA Output Current

Product Details

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 mP reset, backup battery switchover, watchdog timer, and power failure warning.

The ADM690A/ADM692A/ADM802L/M/ADM805L/M are available in 8-pin packages and provide:

  • Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains opera-tional with VCC as low as 1 V.
  • Battery backup switching for CMOS RAM, CMOS microprocessor or other low power devices.
  • A reset pulse if the optional watchdog timer has not been toggled within 1.6 seconds.
  • A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.

On the ADM690A/ADM802L/ADM805L the reset voltage threshold is 4.65 V. On the ADM692A/ADM802M/ ADM805M, the reset voltage threshold is 4.40 V.

The ADM802L/ADM802M guarantee power fail accuracies to ±2%.


  • Precision Supply Voltage Monitor
  • 4.65 V ADM690A/ADM802L/ADM805L
  • 4.40 V ADM692A/ADM802M/ADM805M
  • Reset Assertion Down to 1 V VCC
  • Reset Timeout—200 ms
  • Watchdog Timer—1.6 s
  • 100 mA 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)

Functional Block Diagram for ADM692A


Title Content Type File Type
ADM690A/ADM692A/ADM802/ADM805: Microprocessor Supervisory Circuit Data Sheet (Rev 0, 09/2002) (pdf, 329 kB) Data Sheets PDF
Supervisory Devices Complementary Parts Guide for Altera FPGAs  (pdf, 664 kB) Product Selection Guide PDF
Supervisory Devices Complementary Parts Guide for Xilinx FPGAs  (pdf, 661 kB) Product Selection Guide PDF
Voltage Monitoring Products Applications Guide  (pdf, 1808 kB) Solutions Bulletins PDF
Voltage Monitoring and Sequencing (2009/2010)  (pdf) Overview PDF
Voltage Monitoring Products 2008  (pdf, 3930 kB) Overview PDF
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Supervisor Parametric Search
Narrow down the thousands of available supervisors using parameters applicable to your application.
ADIsim Design/Simulation Tools HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADM692A Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADM692AANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $2.10 $1.68 Y  Material Info PCN Purchase Sample
ADM692AARN Status: Production 8 ld SOIC 8 Comm. Tube, 98 $2.44 $1.94 N  Material Info Notify Me Purchase
ADM692AARN-REEL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 - $1.94 N  Material Info Notify Me Purchase
ADM692AARNZ Status: Production 8 ld SOIC 8 Comm. Tube, 98 $2.10 $1.68 Y  Material Info Notify Me Purchase Sample
ADM692AARNZ-REEL Status: Production 8 ld SOIC 8 Comm. Reel, 2500 - $1.68 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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