Product Details
●The ADM691A/ADM693A/ADM800L/ADM800M 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, CMOS RAM write protection, and power-failure warning. The family of products provides an upgrade for the MAX691A/93A/800M family of products.
●All parts are available in 16-pin DIP and SO packages. The ADM691A is also available in a space-saving TSSOP package. The following functionality is provided:
● 1. Power-on reset output during power-up, power-down and brownout conditions. The circuitry remains operational with VCC as low as 1 V.
● 2. Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic.
● 3. A reset pulse if the optional watchdog timer has not been toggled within a specified time.
● 4. A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.
●### Features and Benefits
● Low Power Consumption
● Precision Voltage Monitor
● ±2% Tolerance on ADM800L/M
● Reset Time Delay—200 ms, or Adjustable
● 1 µA Standby Current
● Automatic Battery Backup Power Switching
● Fast Onboard Gating of Chip Enable Signals
● Also Available in TSSOP Package (ADM691A)
