INA253 - Texas Instruments

INA253 Current-Shunt Monitor

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 zer.

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.