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MAX4081 PDF预览

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

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  

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