https://github.com/pgmmpk/beaglebone_pru_adc

Fast analog sensor capture for Beaglebone Black

https://oroboto.net/2014/03/30/beaglebone-black-analog-to-digital-converter/

7 channel ADC with 12-bit resolution
The most important thing to note is that the ADC inputs are 1.8V logic: do not exceed this or you’ll fry it.

200 KSPS according to following:

http://e2e.ti.com/support/embedded/starterware/f/790/p/392567/1445169