INA253 Datasheet | Texas Instruments

Features - 1 Precision Integrated Shunt Resistor - Shunt Resistor: 2 mΩ - Shunt Inductance: 3 n H - 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 k Hz - Enhanced PWM rejection - Excellent CMRR - > 120-d B DC CMRR - 90-d B AC CMRR at 50 k Hz - Accuracy: - Gain: - Gain Error: 0.4% (Max) - Gain Drift: 45 ppm/°C (Max) - Offset: - Offset Current: ±15 m A (Max) - Offset Drift: 125 µA/°C (Max) - Wide mon-Mode Range: - 4 V to +80 V - Available Gains: 100 m V/A, 200 m V/A, and 400 m V/A - Quiescent Current: 2.4 m A (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 mon-mode range from - 4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 m V/A, 200 m V/A, and 400 m V/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 m A 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE...