What the title says . Good analogue front end, low noise, many bits ADC. None of that ARM rubish :)

What the title says . Good analogue front end, low noise, many bits ADC. None of that ARM rubish :)

Where did the load caps come from? They look low in value to me.
If the 32.768kHz xtal is cut for 3.7pF, then assuming a pin/track value of something like 1.5pF (if you keep it compact and close to the pins), 5.6pF might work better. (5.6pF+1.5pF)/2 = 3.55pF