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MAX4081

更新时间： 2024-10-27 14:58:03
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
14页 1604K
描述
76V、高边、电流检测放大器，带有电压输出

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中文翻译

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MAX4081 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask about the production status of specific part numbers.  
MAX4080/MAX4081  
76V, High-Side, Current-Sense Amplifiers  
with Voltage Output  
General Description  
Benefits and Features  
● Ideal for High-Voltage Current Monitoring Applications  
• Wide 4.5V to 76V Input Common-Mode Range  
• Independent Operating Supply Voltage  
The MAX4080/MAX4081 are high-side, current-sense  
amplifiers with an input voltage range that extends from  
4.5V to 76V making them ideal for telecom, automotive,  
backplane, and other systems where high-voltage current  
monitoring is critical. The MAX4080 is designed for uni-  
directional current-sense applications and the MAX4081  
allows bidirectional current sensing. The MAX4081 sin-  
gle output pin continuously monitors the transition from  
charge to discharge and avoids the need for a separate  
polarity output. The MAX4081 requires an external refer-  
● High Accuracy and Low Quiescent Current Support  
Precision Application Requirements  
• ±0.1% Full-Scale Accuracy  
• Low 100μV Input Offset Voltage  
• Three Gain Versions Available  
- 5V/V (MAX4080F/MAX4081F)  
- 20V/V (MAX4080T/MAX4081T)  
- 60V/V (MAX4080S/MAX4081S)  
ence to set the zero-current output level (V  
The charging current is represented by an output voltage  
= 0V).  
SENSE  
• 75μA Supply Current (MAX4080)  
from V to V , while discharge current is given from  
REF  
to GND.  
CC  
● Flexible Current Sensing Supports Monitoring of  
Charge and Discharge of Batteries  
V
REF  
For maximum versatility, the 76V input voltage range  
applies independently to both supply voltage (V ) and  
common-mode input voltage (V  
monitoring does not interfere with the ground path of the  
load being measured, making the MAX4080/MAX4081  
particularly useful in a wide range of high-voltage sys-  
tems.  
• Bidirectional (MAX4081) or Unidirectional  
CC  
(MAX4080) I  
SENSE  
). High-side current  
RS+  
• Reference Input for Bidirectional OUT (MAX4081)  
● Minimizes Required Board Space  
• 8-Pin μMAX Package  
Ordering Information  
The combination of three gain versions (5V/V, 20V/V,  
60V/V = F, T, S suffix) and a user-selectable, external  
sense resistor sets the full-scale current reading and its  
proportional output voltage. The MAX4080/MAX4081  
offer a high level of integration, resulting in a simple, accu-  
rate, and compact current-sense solution.  
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
8 µMAX  
MAX4080FAUA+  
MAX4080FAUA/V+  
MAX4080FASA+  
MAX4080TAUA+  
MAX4080TAUA/V+  
8 µMAX  
8 SO  
8 µMAX  
The MAX4080/MAX4081 operate from a 4.5V to 76V sin-  
gle supply and draw only 75µA of supply current. These  
devices are specified over the automotive operating tem-  
perature range (-40°C to +125°C) and are available in a  
space-saving 8-pin µMAX® or SO package.  
8 µMAX  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
/V denotes an automotive qualified part.  
Ordering Information continued at end of data sheet.  
Selector Guide appears at end of data sheet.  
Applications  
● Automotive (12V, 24V, or 42V Batteries)  
● 48V Telecom and Backplane Current Measurement  
● Bidirectional Motor Control  
● Power-Management Systems  
● Avalanche Photodiode and PIN-Diode Current  
Monitoring  
Pin Configurations  
TOP VIEW  
+
+
RS+  
1
2
3
4
8
7
6
5
RS-  
RS+  
1
2
3
4
8
7
6
5
RS-  
V
N.C.  
V
REF1A  
REF1B  
OUT  
CC  
CC  
MAX4080  
MAX4081  
N.C.  
N.C. N.C.  
OUT GND  
● General System/Board-Level Current Sensing  
● Precision High-Voltage Current Sources  
GND  
µMAX/SO  
µMAX/SO  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
19-2562; Rev 6; 12/20  
1234567...14

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MAX4081FAUA-T MAXIM

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 		Operational Amplifier, 1 Func, 1200uV Offset-Max, BIPolar, PDSO8, MICROMAX-8
MAX4081SASA MAXIM

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MAX4081SASA+ MAXIM

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 		76V, High-Side, Current-Sense Amplifiers with Voltage Output
MAX4081SASA-T MAXIM

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