INA225-Q1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community INA225-Q1 SBOS728 – FEBRUARY 2015 INA225-Q1 Automotive-Grade, 36-V Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift, High-Speed Current-Shunt Monitor 1 Features 1 AEC-Q100 Qualified: – Temperature Grade 1: –40°C to +125°C – HBM ESD Classification 2 – CDM ESD Classification C4B Wide Common-Mode Range: 0 V to 36 V Offset Voltage: ±150 μV (Max, All Gains) Offset Voltage Drift: 0.5 μV/°C (Max) Gain Accuracy, Over Temperature (Max): – 25 V/V, 50 V/V: ±0.15% – 100 V/V: ±0.2% – 200 V/V: ±0.3% – 10-ppm/°C Gain Drift Bandwidth: 250 kHz (Gain = 25 V/V) Programmable Gains: – G1 = 25 V/V – G2 = 50 V/V – G3 = 100 V/V – G4 = 200 V/V Quiescent Current: 350 μA (Max) Package: VSSOP-8 2 Applications Automotive Lighting Body Control Module Motor Control Valve Control Cluster Central Control Module 3 Description The INA225-Q1 is a voltage-output, current-sense amplifier that senses drops across current-sensing resistors at common-mode voltages that vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, current-shunt monitor that allows an external reference to be used to measure current flowing in both directions across a currentsensing resistor. Four discrete gain levels are selectable using the two gain-select terminals (GS0 and GS1) to program gains of 25 V/V, 50 V/V, 100 V/V, and 200 V/V. The low-offset, zero-drift architecture...