ADM691A
The ADM691A/ADM693A/ADM800 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:
- 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.
ADM691A 特点
- Low Power Consumption
- Precision Voltage Monitor
- ±2% Tolerance on ADM800L/M
- Reset Time Delay-200 ms, or Adjustable
- 1 uA Standby Current
- Automatic Battery Backup Power Switching
- Fast Onboard Gating of Chip Enable Signals
- Also Available in TSSOP Package (ADM691A)
ADM691A 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADM691AAN | 量产 | 16 ld PDIP | 16 | 工业 |
| ADM691AANZ | 量产 | 16 ld PDIP | 16 | 工业 |
| ADM691AARN | 量产 | 16 ld SOIC | 16 | 工业 |
| ADM691AARN-REEL | 量产 | 16 ld SOIC | 16 | 工业 |
| ADM691AARN-REEL7 | 量产 | 16 ld SOIC | 16 | 工业 |
| ADM691AARNZ | 量产 | 16 ld SOIC | 16 | 商业 |
| ADM691AARNZ-REEL | 量产 | 16 ld SOIC | 16 | 商业 |
| ADM691AARNZ-REEL7 | 量产 | 16 ld SOIC | 16 | 商业 |
| ADM691AARU | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADM691AARU-REEL | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADM691AARUZ | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADM691AARW | 量产 | 16 ld SOIC - Wide | 16 | 工业 |
| ADM691AARWZ | 量产 | 16 ld SOIC - Wide | 16 | 工业 |