Hi，
I want to measure votage of -5V 2A,I see the datasheet says the "common mode" votage is -0.3~40V. So,can I connect -5V to the VIN- pin to measure current ? and connect -5V to the GND measure the -5V votage(but AGND and DGND both is GND )? or convert the -5V to 5V then measure the 5V votage? see figure. Is that ture? or can you recommend a chip that can be used? Thanks
Hello user4542993,
Thanks for considering to use Texas Instruments in your design. The configuration you have posted above will still violate the common mode absolute max specifications at the IN+ and IN- pins. The configuration below should help you achieve what you want. In this configuration the INA260's ground is set to the lowest system potential of -5V while the supply pin is set to ground. To ensure that the downstream circuitry can handle the output, you will need to cascade a digital isolator at the output. Our selection of digital isolators can be found here.
