I would like to use AD7946.
But, the output of Voltage follower(AD8629) before the ADC oscillated.
So, I have three questions.
#1 Is a capacitor(2.7nF) necessary? Is it possible to reduce the value or not to use a capacitor?(In Figure.25)
i urgently need to find an ADC reference which answer to this need:
- Resolution >12bits
- Number of channels >1
- SPI interface with daisy chain mode
- SPICLK 10Mhz tolerant
I have already found the AD7946, but it seems to not tolerate…
I would like to digitally calibrate for static non-linearities and low order nonlinearities in 14 bit SAR ADC converter. It has INL in the range +/-1LSB. Signals of interest are pre-filtered in very low biomedical frequency (0-30Hz). Procedures…