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1 Features

1? Precision Integrated Shunt Resistor

– Shunt Resistor: 2 mΩ

– Shunt Inductance: 3 nH

– Shunt Resistor Tolerance: 0.1% (Max)

– ±15 A Continuous from –40°C to +85°C

– 0°C to 125°C Temperature Coefficient:

10 ppm/°C

? High Bandwidth: 350 kHz

? Enhanced PWM rejection

? Excellent CMRR

– > 120-dB DC CMRR

– 90-dB AC CMRR at 50 kHz

? Accuracy:

– Gain:

– Gain Error: 0.4% (Max)

– Gain Drift: 45 ppm/°C (Max)

– Offset:

– Offset Current: ±15 mA (Max)

– Offset Drift: 125 μA/°C (Max)

? Wide Common-Mode Range: –4 V to +80 V

? Available Gains: 100 mV/A, 200 mV/A,

and 400 mV/A

? Quiescent Current: 2.4 mA (Max)

2 Applications

? Solenoid and Valve Controls

? Transmission control

? Motor Controls

? Actuator Controls

? DC/DC Converters

? Remote I/O Link Control

3 Description

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.