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ADCMP671-1YUJZ-RL7

更新时间： 2024-11-22 07:18:47
品牌 Logo 应用领域
亚德诺 - ADI 监视器
页数 文件大小 规格书
16页 295K
描述
Low Power, Adjustable UV and OV Monitor

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ADCMP671-1YUJZ-RL7 数据手册

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Low Power, Adjustable UV and OV Monitor  
with 400 mV, 0ꢀ.275 ꢁeꢂerenꢃe  
Data Sheet  
ADCMP621  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
DD  
Window monitoring with minimum processor I/O  
Individually monitoring N rails with only N + 1 processor I/O  
400 mV, 0.275% threshold at VDD = 3.3 V, 25°C  
Supply range: 1.7 V to 5.5 V  
ADCMP671  
PWRGD  
INH  
UV  
Low quiescent current: 17 μA maximum at 125°C  
Input range includes ground  
400mV  
OV  
Internal hysteresis: 9.2 mV typical  
OV  
Low input bias current: 2.5 nA maximum  
Open-drain outputs  
INL  
Power good indication output  
Designated over voltage indication output  
Low profile (1 mm), 6-lead TSOT package  
GND  
Figure 1.  
APPLICATIONS  
Supply voltage monitoring  
Li-Ion monitoring  
Portable applications  
Handheld instruments  
GENERAL DESCRIPTION  
404  
402  
400  
398  
396  
394  
392  
390  
388  
386  
The ADCMP671 voltage monitor consists of two low power, high  
accuracy comparators and reference circuits. It operates on a  
supply voltage from 1.7 V to 5.5 V and draws 17 μA maximum,  
making it suitable for low power system monitoring and portable  
applications. The part is designed to monitor and report supply  
undervoltage and overvoltage fault. The low input bias current  
and voltage reference allows resistor adjustable UV and OV  
threshold down to 400 mV. The ADCMP671 has two open-  
drain outputs: the PWRGD output indicates that the supply is  
INH1  
INL1  
INH2  
INL2  
RISING INPUT  
FALLING INPUT  
OV  
within the UV and OV window, and the  
output indicates  
TWO TYPICAL PARTS  
COMPARATOR A AND COMPARATOR B  
that the supply is overvoltage. This output combination allows  
users to window monitor N supplies with an N + 1 processor  
input/output (I/O). Each output is guaranteed to sink greater  
than 5 mA over temperature.  
V
= 5V  
DD  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
Figure 2. Comparator Thresholds vs. Temperature  
The ADCMP671 is available in 6-lead TSOT package. The  
device operates over the −40°C to +125°C temperature range.  
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 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  
©2011 Analog Devices, Inc. All rights reserved.  
 
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