1 Features

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
  • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C6
• Pinout Optimized for External Filtering
• Wide Common-Mode Range: –16 V to +80 V
• Accuracy:
  • CMRR: 120 dB
  • ±2.5-mV Offset (Maximum)
  • ±1% Gain Error (Maximum)
  • 20-μV/°C Offset Drift (Maximum)
  • 55-ppm/°C Gain Drift (Maximum)
• Bandwidth: Up to 130 kHz
• Two Gain Options Available:
  • 14 V/V (INA270A-Q1)
  • 20 V/V (INA271A-Q1)
• Quiescent Current: 900 μA (Maximum)
• Power Supply: 2.7 V to 18 V
• Packages: SOIC-8

2 Applications

• Electric Power Steering (EPS) Systems
• Body Control Modules
• Brake Systems
• Electronic Stability Control (ESC) Systems

3 Description

The INA270A-Q1 and INA271A-Q1 (INA27xA-Q1) family of current-shunt monitors with voltage output can sense voltage drops across current shunts at common-mode voltages from –16 V to +80 V, independent of the supply voltage. The INA27xA-Q1 pinouts readily enable filtering.

The INA27xA-Q1 devices are available with two output voltage scales: 14 V/V and 20 V/V. The 130-kHz bandwidth simplifies use in current-control loops.

The INA27xA-Q1 operates from a single 2.7-V to 18-V supply, drawing a maximum of 900 μA of supply current. They are specified over the extended operating temperature range of –40°C to +125°C and are offered in an SOIC-8 package.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic