Zero-drift current-shunt monitor with low bias current

17th September 2019
Posted By : Sponsored Post
Zero-drift current-shunt monitor with low bias current

The INA191 is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier) that is commonly used for overcurrent protection, precision-current measurement for system optimisation, or in closed-loop feedback circuits. This device can sense drops across shunts at common-mode voltages from -0.2 to +40V, independent of the supply voltage. 

The low input bias current of the INA191 permits the use of larger current-sense resistors, and thus provides accurate current measurements in the µA range. Five fixed gains are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement, and allows for smaller sense resistors with lower power loss while still providing accurate current measurements.

The INA191 operates from a single 1.7 to 5.5V power supply, drawing a maximum of 65µA of supply current when enabled and only 100nA when disabled. The device is specified over the operating temperature range of -40 to +125°C, and offered in a DSBGA-6 package.

To find out more, click here.

You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Connected World Summit 2019
22nd October 2019
United Kingdom The Business Design Centre, London
Hotspots Specials 2019
24th October 2019
Germany Böblingen, Germany
IoT Solutions World Congress 2019
29th October 2019
Spain Barcelona
Maintec 2019
30th October 2019
United Kingdom NEC, Birmingham
NOAH Conference 2019
30th October 2019
United Kingdom Old Billingsgate, London