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ADM708ARZ

更新时间： 2024-01-18 10:58:08
品牌 Logo 应用领域
亚德诺 - ADI 电源电路电源管理电路微处理器光电二极管监控输入元件PC
页数 文件大小 规格书
12页 333K
描述
Low Cost Microprocessor Supervisory Circuits

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ADM708ARZ 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.67
其他特性：MANUAL RESET OPTION可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G8
长度：4.9 mm信道数量：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified座面最大高度：1.75 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：3.15 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：3.9 mmBase Number Matches：1

ADM708ARZ 数据手册

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Low Cost Microprocessor  
Supervisory Circuits  
ADM705/ADM706/ADM707/ADM708  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
Guaranteed RESET valid with VCC = 1 V  
190 μA quiescent current  
WATCHDOG  
TRANSITION  
DETECTOR  
WATCHDOG  
INPUT (WDI)  
WATCHDOG  
TIMER  
WATCHDOG  
OUTPUT (WDO)  
Precision supply voltage monitor  
4.65 V (ADM705/ADM707)  
V
RESET AND  
WATCHDOG  
TIMEBASE  
CC  
4.40 V (ADM706/ADM708)  
250μA  
200 ms reset pulse width  
MR  
RESET  
Debounced TTL/CMOS manual reset input (MR)  
Independent watchdog timer (ADM705/ADM706)  
1.60 sec timeout (ADM705/ADM706)  
Active high reset output (ADM707/ADM708)  
Voltage monitor for power-fail or low battery warning  
Superior upgrade for MAX705 to MAX708  
RESET  
GENERATOR  
V
CC  
4.65V*  
ADM705/  
ADM706  
POWER-FAIL  
INPUT (PFI)  
POWER-FAIL  
OUTPUT (PFO)  
1.25V  
*
VOLTAGE REFERENCE = 4.65V (ADM705), 4.40V (ADM706)  
Figure 1. ADM705/ADM706  
APPLICATIONS  
Microprocessor systems  
Computers  
Controllers  
Intelligent instruments  
Critical microprocessor supply monitoring  
V
CC  
250μA  
RESET  
RESET  
MR  
RESET  
GENERATOR  
V
CC  
4.65V*  
1.25V  
ADM707/  
ADM708  
POWER-FAIL  
INPUT (PFI)  
POWER-FAIL  
OUTPUT (PFO)  
* VOLTAGE REFERENCE = 4.65V (ADM707), 4.40V (ADM708)  
Figure 2. ADM707/ADM708  
GENERAL DESCRIPTION  
The ADM705/ADM706/ADM707/ADM708 microprocessor  
supervisory circuits are suitable for monitoring 5 V power  
supplies/batteries and can also monitor microprocessor activity.  
The ADM705 and ADM706 are identical except for the reset  
threshold monitor levels, which are 4.65 V and 4.40 V, respectively.  
The ADM707 and ADM708 provide a similar functionality to  
the ADM705 and ADM706 and only differ in that a watchdog  
timer function is not available. Instead, an active high reset  
output (RESET) is available as well as the active low reset output  
The ADM705/ADM706 provide power-supply monitoring  
circuitry that generate a reset output during power-up, power-  
down, and brownout conditions. The reset output remains  
operational with VCC as low as 1 V. Independent watchdog  
monitoring circuitry is also provided. This is activated if the  
watchdog input has not been toggled within 1.60 seconds.  
RESET  
(
). The ADM707 and ADM708 are identical except for  
the reset threshold monitor levels, which are 4.65 V and 4.40 V,  
respectively.  
In addition, there is a 1.25 V threshold detector to warn of  
power-failures, to detect low battery conditions, or to monitor an  
additional power supply. An active low, debounced manual reset  
All parts are available in narrow 8-lead PDIP and 8-lead SOIC  
packages.  
MR  
input (  
) is also included.  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  
 
 
 
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ADM708ARZ 替代型号

型号 品牌 替代类型 描述 数据表
ADM708ARZ-REEL ADI

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