Features; Quick-Start Setup And Use; Current Input - Texas Instruments INA253EVM User Manual

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2.2

Features

The INA253EVM provides basic functional evaluation of this device family. The fixture layout is not
intended for electromagnetic compatibility (EMC) testing.
The INA253EVM PCB provides the following features:
• All INA253 devices are provided
• Easy access to all pins
• Board layout and construction that supports ±15-A current through the device across the full –40°C to
+85°C temperature range (see
• Place holders on the PCB for configurations other than the default configuration
For comprehensive information about this family of current sense amplifiers, refer to the INA253 data
sheet (SLOS954).
2.3

Quick-Start Setup and Use

Follow these procedures to setup and use the INA253EVM:
1. Connect an external dc supply voltage between 2.7 V and 5.5 V to the VS test point, and connect the
ground reference of that supply to the GND test point.
2. Connect a current source across the IS+ and IS– test points, to provide current flowing through the
integrated shunt resistor. The common-mode voltage on the IS+ and IS– pins must be between –4 V
and +80 V (referenced to the GND pin).
3. The OUT pin quiescent voltage level is midsupply, and increases or decreases when there is a current
load flowing through IS+ and IS–, as set up in the previous step.
2.4

Current Input

The current flowing across the IS+ and IS– pins develops a differential voltage across the 2-mΩ shunt and
is amplified by the current shunt amplifier. The current flowing across this integrated shunt is multiplied by
the current gain of the INA253A1 (100 mV/A), INA253A2 (200 mV/A), or INA253A3 (400 mV/A). Do not
use this integrated shunt resistor as a stand-alone component. See the Integrated Shunt Resistor section
of the INA253 data sheet (SLOS954) for more information.
SBOU194 – May 2018
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Section 3.2 )
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INA253EVM