I'm trying to use a Data acquisition unit (Microcontroller maybe) to measure a voltage difference between two cell of a battery (the battery is about 400V). The Data acquisition Unit and battery are connected in ground (this is call ground coupled, right?), I'm thinking of using a differential Amp- AD629 (which can measure ±270V) to measure the voltage differences between two cells. How should I connect it? Is there a high voltage virtual ground chip I can use?
datasheet for AD629
http://www.analog.com/static/imported-files/data_sheets/AD629.pdf
I'll probably use a ±15V DC power supply to power it.
Is there a differential Amp that can measure ±400V and up?
datasheet for AD629
http://www.analog.com/static/imported-files/data_sheets/AD629.pdf
I'll probably use a ±15V DC power supply to power it.
Is there a differential Amp that can measure ±400V and up?