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INA253 데이터시트(Datasheet) 13 Page - TI store

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부품명 INA253
상세내용  High Voltage, Bidirectional, Zero-Drift, Current-Shunt Monitor with Integrated 2-mΩ Precision Low Inductive Shunt Resistor
PDF  24 Pages
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 13 page
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+
±
REF2
REF1
VS
GND
OUT
PWM
Rejection
50k
50k
IS+
IS-
IN+
IN-
SH+
SH-
2mO
0.1%
R1
R2
ADC
+
-
+
±
REF2
REF1
VS
GND
OUT
PWM
Rejection
50k
50k
IS+
IS-
IN+
IN-
SH+
SH-
2mO
0.1%
REF5025
2.5±V
Reference
13
INA253
www.ti.com
SLOS954 – MAY 2018
Product Folder Links: INA253
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
Device Functional Modes (continued)
8.4.6 Output Set to Mid-External Reference
In this example, an external reference is divided by two by connecting one REF pin to ground and the other REF
pin to the reference, as shown in Figure 9.
Figure 9. Mid-External Reference Output
8.4.7 Output Set Using Resistor Divide
The INA253 REF1 and REF2 pins allow for the midpoint of the output voltage to be adjusted for system circuitry
connections to analog to digital converters (ADCs) or other amplifiers. The REF pins are designed to be
connected directly to supply, ground, or a low-impedance reference voltage. The REF pins can be connected
together and biased using a resistor divider to achieve a custom output voltage. If the amplifier is used in this
configuration, as shown in Figure 10, use the output as a differential signal with respect to the resistor divider
voltage. Use of the amplifier output as a single-ended signal in this configuration is not recommended because
the internal impedance shifts can adversely affect device performance specifications.
Figure 10. Setting the Reference Using a Resistor Divider




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