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INA180A2IDBVT 数据表(PDF) 21 Page - Texas Instruments

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部件名 INA180A2IDBVT
功能描述  INAx180 Low- and High-Side Voltage Output, Current-Sense Amplifiers
PDF  51 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

INA180A2IDBVT 数据表(HTML) 21 Page - Texas Instruments

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Power Supply, VS
2.7 V to 5.5 V
ADC
Microcontroller
Bus Voltage
±0.2 V to +26 V
RSENSE
GND
VS
Load
IN±
IN+
OUT
+
±
CBYPASS
0.1 µF
Single-Channel
TI Device
21
INA180, INA2180, INA4180
www.ti.com
SBOS741G – APRIL 2017 – REVISED APRIL 2020
Product Folder Links: INA180 INA2180 INA4180
Submit Documentation Feedback
Copyright © 2017–2020, Texas Instruments Incorporated
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The INAx180 amplify the voltage developed across a current-sensing resistor as current flows through the
resistor to the load or ground.
9.1.1 Basic Connections
Figure 45 shows the basic connections of the INA180. Connect the input pins (IN+ and IN–) as closely as
possible to the shunt resistor to minimize any resistance in series with the shunt resistor.
NOTE: For best measurement accuracy, connect analog-to-digital converter (ADC) reference or microcontroller
ground as closely as possible to the INAx180 GND pin, and add an RC filter between the output of the INAx180 and
the ADC. See Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using ZOUT for more details.
Figure 45. Basic Connections for the INA180
A power-supply bypass capacitor of at least 0.1 µF is required for proper operation. Applications with noisy or
high-impedance power supplies may require additional decoupling capacitors to reject power-supply noise.
Connect bypass capacitors close to the device pins.



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