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ADM698:  Microprocessor Supervisory Circuit

Product Details


The ADM698/ADM699 supervisory circuits provide power supply monitoring and watchdog timing for microprocessor systems.

The ADM698 monitors the 5 V VCC power supply and generates a RESET pulse during power up, power down and during low voltage "Brown Out" conditions. The RESET output is guaranteed to be functional (logic low) with VCC as low as 1 V.

The ADM699 features an identical monitoring circuit as in the ADM698 plus an additional watchdog timer input to monitor microprocessor activity. The RESET output is forced low if the watchdog input is not toggled within the 1 second watchdog timeout period.

Both parts are available in 8-pin plastic DIP and 16-lead SOIC packages. The 16-lead SOIC contains additional outputs RESET (without inversion) and Watchdog Output WDO (ADM699 only).

FEATURES and BENEFITS

  • Superior Upgrade for MAX698/MAX699
  • Guaranteed RESET Assertion with VCC = 1 V
  • Low 0.6 mA Supply Current
  • Precision 4.65 V Voltage Monitor
  • Power OK/Reset Time Delay
  • Watchdog Timer
  • Minimum Component Count
  • Performance Specified over Temperature

Functional Block Diagram for ADM698

Documentation

Title Content Type File Type
ADM698/ADM699: Microprocessor Supervisory Circuits Data Sheet (Rev 0, 10/2002) (pdf, 256 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
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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.

SampleSample & Buy

Price, packaging, availability

ADM698 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM698AN Status: Production 8 ld PDIP 8 Ind Tube, 50 $1.87 $1.59 N  Material Info PCN Purchase
ADM698ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $1.62 $1.37 Y  Material Info PCN Purchase Sample
ADM698AR Status: Last Time Buy 16 ld SOIC - Wide 16 Ind Tube, 47 $2.05 $1.75 N  Material Info PCN/PDN Purchase
ADM698ARZ Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $1.77 $1.52 Y  Material Info PCN Purchase Sample
ADM698ARZ-REEL Status: Production 16 ld SOIC - Wide 16 Ind Reel, 1000 - $1.52 Y  Material Info PCN 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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