ADM800: uP Supervisor , Adjustable Reset and Watchdog Periods

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:

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.

ADM800 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)

ADM800 功能框图

ADM800 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADM800MARN	量产	16 ld SOIC	16	工业
ADM800MARNZ	量产	16 ld SOIC	16	工业
ADM800MARNZ-REEL	量产	16 ld SOIC	16	工业

ADM800 应用技术支持与电子电路设计开发资源下载

1. ADM800 数据手册DataSheet 下载 . PDF
2. ADI 模拟器件公司比较器产品选型指南 . PDF
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF