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MAX4080FAUV

更新时间： 2024-10-26 11:17:15
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
14页 326K
描述
76V, High-Side, Current-Sense Amplifiers with Voltage Output

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MAX4080FAUV 数据手册

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19-2562; Rev 4; 7/11  
76V, High-Side, Current-Sense Amplifiers with  
Voltage Output  
/MAX4081  
General Description  
Features  
o Wide 4.5V to 76V Input Common-Mode Range  
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 cur-  
rent monitoring is critical. The MAX4080 is designed for  
unidirectional current-sense applications and the  
MAX4081 allows bidirectional current sensing. The  
MAX4081 single output pin continuously monitors the  
transition from charge to discharge and avoids the  
need for a separate polarity output. The MAX4081  
requires an external reference to set the zero-current  
o Bidirectional or Unidirectional I  
SENSE  
o Low-Cost, Compact, Current-Sense Solution  
o Three Gain Versions Available  
5V/V (MAX4080F/MAX4081F)  
20V/V (MAX4080T/MAX4081T)  
60V/V (MAX4080S/MAX4081S)  
o
0.1% Full-Scale Accuracy  
o Low 100µV Input Offset Voltage  
o Independent Operating Supply Voltage  
o 75µA Supply Current (MAX4080)  
output level (V  
= 0V). The charging current is rep-  
SENSE  
resented by an output voltage from V  
to V , while  
CC  
REF  
to GND.  
discharge current is given from V  
o Reference Input for Bidirectional OUT (MAX4081)  
o Available in a Space-Saving, 8-Pin µMAX Package  
REF  
For maximum versatility, the 76V input voltage range  
applies independently to both supply voltage (V  
)
CC  
and common-mode input voltage (V  
). High-side  
RS+  
Ordering Information  
current 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 systems.  
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  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
8 µMAX  
8 µMAX  
8 SO  
MAX4080FAUA+  
MAX4080FAUA/V+  
MAX4080FASA+  
MAX4080TAUA+  
MAX4080TAUA/V+  
MAX4080TASA+  
MAX4080SAUA+  
MAX4080SAUA/V+  
MAX4080SASA+  
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,  
accurate, and compact current-sense solution.  
8 µMAX  
8 µMAX  
8 SO  
8 µMAX  
8 µMAX  
8 SO  
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  
temperature range (-40°C to +125°C) and are available  
in a space-saving 8-pin µMAX® or SO package.  
Ordering Information continued at end of data sheet.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
/V denotes an automotive qualified part.  
Applications  
Selector Guide appears at end of data sheet.  
Automotive (12V, 24V, or 42V Batteries)  
48V Telecom and Backplane Current  
Measurement  
Pin Configurations  
Bidirectional Motor Control  
Power-Management Systems  
TOP VIEW  
+
+
Avalanche Photodiode and PIN-Diode Current  
Monitoring  
RS+  
1
2
3
4
8
7
6
5
RS-  
RS+  
1
2
3
4
8
7
6
5
RS-  
V
N.C.  
N.C.  
V
CC  
REF1A  
REF1B  
OUT  
CC  
General System/Board-Level Current Sensing  
Precision High-Voltage Current Sources  
MAX4080  
MAX4081  
N.C.  
GND  
N.C.  
OUT GND  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
µMAX/SO  
µMAX/SO  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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