2016-02-22

4x AD7190 + Arduino Nano
See also The ultra low noise 24-bit ADC: AD7190

This board implements a 4 channel, ultra low noise, simultaneous sampling, 24 bit ADC. It has a dedicated oscillator and the sync line is conneted to all 4 ADCs. Its indended use is to read out 4 strain gauge weighing cells.

But with an external reference voltage it can be used for direct voltage measurements too.

The digital part is supplied by the USB, and the analog part must be supplied seperately from an ultra low noise 5V power supply (see Ultra Low Noise Linear Power Supply, using LT3042).

On each ADC only one out of two differential channels is used. See also Mehrkanal Delta-Sigma ADCs und das Abtasttheorem.