Dear Precision ADC Forum,
I'm designing an electronic load for my lab. The load voltage is sensed with a standard resistor divider, and the load current is sensed across a shunt resistor so that the voltage across it can be sensed in single-ended fashion. I have LT6230-based amplifiers for each sensed value to adapt them to the inputs of an ADC. My system is limited to a maximum of 100 ksps. It would be easiest for to power the ADC's with 5V, but I can generate other voltages if needed.
There are so many different two-channel ADC's available that I'm feeling overwhelmed. I'm not sure if a simultaneous sampling device is worthwhile, and I don't know how many bits are truly needed. I also don't know if a differential input ADC is worthwhile, even though I would use it as single-ended (GND-referenced).
If it helps, I would like to use a 16-bit DAC, because the maximum load voltage is 430VDC and the maximum current is 30.0A. As I understand, this would allow me to program with precisions of:
430V / 2^16 = 6.6 mV
30A / 2^16 = 0.45 mA
[edited by: @skowalik at 2:09 PM (GMT 0) on 26 Feb 2020]