Hello, I am considering to use CN0335 (data aquisition PMOD) with spartran-6 Digilent FPGA board. I have following questions in this regard 1. Will the board come with the resistor values which are mentioned in the datasheet ?. If so, how can I change the value of resistors to accommodate different input range ? For instance, are there some empty slots where I can place additional resistors to change their original values. Or, I will have to remove the original resistors and solder the new ones. 2. Is anybody awar of similar data acquisition PMODS but with higher accuracy of ADC ? Hoping for an prompt response from your side. Thanks very much in advance, Kind regards Saurabh Agarwal
The CN0335 comes ready to use out of the box with a +/-10 full scale input range. The attenuation network (resistors, capacitors, and amplifier) ensures the voltage seen by the ADC is not outside its full scale range. (which is only 2.5V) So yes the resistors will be populate on the board when you order it.
You asked about higher resolution ADC PMODs. There are several which you may find that fit your design requirements. 16-bit might be something like the AD7980 or the AD7688, 18-bit might be the AD7984 or the AD7690. All 4 of those have PMOD boards which can be found in the ordering section.
Hope this is helpful.