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 in a 6-wire configuration.

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

The digital part is supplied by the USB-port, and the analog part must be supplied seperately from a 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.

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