@BratAttack Thanks for looking at the schematics and for the feedback!
Indeed, you are right that this would simplify the design. One of the goals was to make it possible to order everything in one go from Tayda. But there are four things that would be better to get from somewhere else:
- the voltage ref and logic level converter (as you suggest)
- the buck converter
- a vertical USB-B port
Any thoughts on requiring some parts to be ordered somewhere else, as long as they are fairly standard?
It is true that the chip runs at that voltage and I have tested it like that, but the catch is that the sampling rates scales with the supply voltage. This means, the chip only runs at 100k samples if it is supplied with 5V!
I don’t understand this. The CV inputs are grouped in pairs, and each pair uses one TL074. There is only one TL072 used to buffer the voltage references.
There is one cap on the Teensy and one on the ADC. The op-amps might like some caps as well, perhaps, but I’m not sure if they are really needed. Any thought?