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INA253
SLOS954A – JULY 2018 – REVISED DECEMBER 2018
INA253 High Voltage, Bidirectional, Zero-Drift, Current-Shunt Monitor With Integrated, 2-mΩ, Precision, Low Inductive Shunt Resistor
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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA253
TSSOP (20)
6.50 mm × 4.40 mm
(1) For all available packages, see the package option addendum at the end of the data sheet.
Typical Application
Up To 80 V
2.7-V to 5.5-V Supply
VS
IN+ +
REF2 INA253 OUT
±
IN± GND
REF1
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
INA253
SLOS954A – JULY 2018 – REVISED DECEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History................