ADM693A Microprocessor Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.4V Threshold Voltage, 250mA Output Current
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.
Power-on reset output during power-up, power-down and brownout conditions. The circuitry remains operational with VCC as low as 1 V.
Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic.
A reset pulse if the optional watchdog timer has not been toggled within a specified time.
A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.
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:
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)
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Data Sheets
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| ADM693AANZ Production | 16 ld PDIP | OTH 25 | -40 to 85C | 2.32 | 1.85 | Y |
| ADM693AARN Production | 16 ld SOIC | OTH 48 | -40 to 85C | 2.68 | 2.13 | N |
| ADM693AARNZ Production | 16 ld SOIC | OTH 48 | -40 to 85C | 2.32 | 1.85 | Y |
| ADM693AARNZ-REEL Production | 16 ld SOIC | REEL 2500 | -40 to 85C | 0 | 1.85 | Y |
| ADM693AARW Last Time Buy | 16 ld SOIC - Wide | OTH 47 | -40 to 85C | 2.68 | 2.13 | N |
| ADM693AARWZ Production | 16 ld SOIC - Wide | OTH 47 | -40 to 85C | 2.32 | 1.85 | Y |
| ADM693AARWZ-REEL Production | 16 ld SOIC - Wide | REEL 1000 | -40 to 85C | 0 | 1.85 | Y |
Reference Materials
