The INA253 is a voltage-output, current sense
amplifier with an integrated shunt resistor of 2 mΩ.
The INA253 is designed to monitor bidirectional
currents over a wide common-mode range from
–4 V to +80 V, independent of the supply voltage.
Three fixed gains are available: 100 mV/A, 200 mV/A,
and 400 mV/A. The integration of the precision
resistor with a zero-drift chopped amplifier provides
calibration equivalent measurement accuracy, ultralow
temperature drift performance of 15 ppm/°C, and
an optimized Kelvin layout for the sensing resistor.
The INA253 is designed with enhanced PWM
rejection circuitry to suppress large (dv/dt) signals
that enable real-time continuous current
measurements. The measurements are critical for inline
current measurements in a motor-drive
application, and for solenoid valve control
applications.
This device operates from a single 2.7-V to 5.5-V
power supply, drawing a maximum of 3 mA of supply
current. All gain versions are specified over the
extended operating temperature range (–40°C to
+125°C), and are available in a 20-pin TSSOP
package.INA253A1IPW
INA253A1IPWR
INA253A2IPW
INA253A2IPWR
INA253A3IPW
INA253A3IPWR
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