Features: Precision Supply Voltage Monitor4.65 V ADM690A/ADM802L/ADM805L4.40 V ADM692A/ADM802M/ADM805MReset Assertion Down to 1 V VCCReset Timeout-200 msWatchdog Timer-1.6 s100 mA Quiescent Supply CurrentAutomatic Battery Backup Power SwitchingVoltage Monitor for Power Fail62% Power Fail Accuracy ...
ADM690A: Features: Precision Supply Voltage Monitor4.65 V ADM690A/ADM802L/ADM805L4.40 V ADM692A/ADM802M/ADM805MReset Assertion Down to 1 V VCCReset Timeout-200 msWatchdog Timer-1.6 s100 mA Quiescent Supply C...
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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 warnin The ADM690A/ADM692A/ADM802L/M/ADM805L/M are available in 8-pin packages and provide:
1. 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.
2. Battery backup switching for CMOS RAM, CMOS microprocessor or other low power devices.
3. A reset pulse if the optional watchdog timer has not been toggled within 1.6 seconds.
4. 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 theADM692A/ADM802MADM805M, the reset voltage threshold is 4.40 V.
The ADM690A/ADM692A/ADM802L/M/ADM805L/M guarantee power fail accuracies to ±2% and provide an active high reset output, RESET instead of RESET.
The ADM690A/ADM692A/ADM802L/M/ADM805L/M family of products is fabricated using an advanced epitaxial CMOS process combining low power consumption and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. They provide a pin-compatible upgrade for the MAX690A/MAX692A/MAX802L/MAX802M/MAX805L All parts are available in 8-pin DIP and SOIC packages. ADM690A is also available in a new space-saving microSOICpackage.