参数资料
型号: ADM6823RYRJZ-RL7
厂商: Analog Devices Inc
文件页数: 1/12页
文件大小: 0K
描述: IC SUPERVISOR W/MR 2.63V SOT23-5
标准包装: 1
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: 2.63V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
其它名称: ADM6823RYRJZ-RL7DKR

Low Voltage Supervisory Circuits with
Watchdog and Manual Reset in 5-Lead SOT-23
ADM6821/ADM6822/ADM6823/ADM6824/ADM6825
FEATURES
Precision low voltage monitoring
FUNCTIONAL BLOCK DIAGRAM
9 reset threshold options: 1.58 V to 4.63 V
140 ms (min) reset timeout
ADM6823
V CC
Watchdog timer with 1.6 sec timeout
Manual reset input
V CC
V REF
RESET
GENERATOR
RESET
Reset output stages
Push-pull active-low
Open-drain active-low
MR
DEBOUNCE
WATCHDOG
DETECTOR
Push-pull active-high
Low power consumption (7 μA)
Guaranteed reset output valid to V CC = 1 V
Power supply glitch immunity
Specified from ? 40°C to +125°C
5-lead SOT-23 package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
GENERAL DESCRIPTION
GND
WDI
Figure 1.
The ADM682x are supervisory circuits that monitor power
supply voltage levels and code execution integrity in
microprocessor-based systems. As well as providing power-on
reset signals, an on-chip watchdog timer can reset the
microprocessor if it fails to strobe within a preset timeout
period. A reset signal can also be asserted by means of an
external push-button through a manual reset input. The parts
Each part is available in nine reset threshold options, ranging
from 1.58 V to 4.63 V. The reset and watchdog timeout periods
are fixed at 140 ms (min) and 1.6 sec (typ), respectively.
The ADM682x are available in 5-lead SOT-23 packages and
typically consume only 7 μA, making them suitable for use in
low power, portable applications.
feature different combinations of watchdog input and manual
reset input and output stage configurations, as shown in Table 1.
Table 1. Selection Table
Output Stage
Part No.
ADM6821
ADM6822
ADM6823
ADM6824
ADM6825
Watchdog Timer
Yes
Yes
Yes
Yes
-
Manual Reset
Yes
Yes
Yes
-
Yes
RESET
-
Open-Drain
Push-Pull
Push-Pull
Push-Pull
RESET
Push-Pull
-
-
Push-Pull
Push-Pull
Rev. 0
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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
registered trademarks are the property of their respective owners.
Fax: 781.461.3113
? 2005 Analog Devices, Inc. All rights reserved.
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