Analog Devices ADM698
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.| Part No. | ADM698 |
|---|---|
| Datasheet | ADM698 Download |
| Manufacturer |  Analog Devices |
| Description | Microprocessor Supervisory Circuits |
| Buy | Stock & Price |
FEATURES
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 TemperatureAPPLICATIONS
Microprocessor Systems Computers Controllers Intelligent Instruments Automotive Systems Critical●P Power Monitoring VCC Microprocessor Supervisory Circuits ADM698/ADM699 FUNCTIONAL BLOCK DIAGRAM ADM698/ ADM699 RESET GENERATOR 4.65V RESET* RESET WATCHDOG INPUT WDI* WATCHDOG TRANSITION DETECTOR (1 sec) WATCHDOG OUTPUT WDO* *WDI (ADM699 ONLY) RESET (SOIC ONLY) WDO (ADM699 SOIC ONLY) TYPICAL APPLICATION CIRCUIT
GENERAL DESCRIPTION
+5V The ADM698/ADM699 supervisory circuits provide power supply monitoring and watchdog timing for microprocessor systems. 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.
