参数资料
型号: ADM811SART-REEL7
厂商: Analog Devices Inc
文件页数: 1/12页
文件大小: 0K
描述: IC SUPVSR W/RESET 2.93V SOT-143
标准包装: 3,000
类型: 简单复位/加电复位
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 低有效
复位超时: 最小为 140 ms
电压 - 阀值: 2.93V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: TO-253-4,TO-253AA
供应商设备封装: SOT-143
包装: 带卷 (TR)
其它名称: ADM811SART-REEL7-ND
ADM811SART-RL7TR

Microprocessor Supervisory
Circuit in 4-Lead SOT-143 with DSP
Data Sheet
FEATURES
Superior upgrade for MAX811/MAX812
FUNCTIONAL BLOCK DIAGRAM
ADM811/ADM812
Specified over temperature
Low power consumption: 5 μA typical
Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options
Reset assertion down to 1 V CC
Power-on reset: 140 ms minimum
V CC
MR
V REF
RESET
GENERATOR
DEBOUNCE
RESET/RESET
GND
Logic low RESET output (ADM811)
Logic high RESET output (ADM812)
Built-in manual reset
APPLICATIONS
Microprocessor systems
Controllers
Intelligent instruments
Automotive systems
Safety systems
Portable instruments
GENERAL DESCRIPTION
The ADM811/ADM812 are reliable voltage monitoring devices
Figure 1.
suitable for use in most voltage monitoring applications. The
ADM811/ADM812 are designed to monitor six different
voltages, each allowing a 5% or 10% degradation of standard
V CC
ADM811
V CC
MICROPROCESSOR
SYSTEM
PSU voltages before a reset occurs. These voltages have been
selected for the effective monitoring of 2.5 V, 3 V, 3.3 V, and 5 V
MR
RESET
GND
100k?
RESET
GND
supply voltage levels.
Included in this circuit is a debounced manual reset input.
Reset can be activated using an electrical switch (or an input
from another digital device) or by a degradation of the supply
voltage. The manual reset function is very useful, especially if
the circuit in which the ADM811/ADM812 are operating enters
into a state that can only be detected by the user. Allowing the
user to reset a system manually can reduce the damage or
danger that could otherwise be caused by an out-of-control
or locked system.
Figure 2. Typical ADM811 Operating Circuit
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ?2013 Analog Devices, Inc. All rights reserved.
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