ProVol is based on MAX5719A from MAXIM. Hopefully, This will the most easily programable voltage reference. Since the calibration of my voltage reference could be difficult to me and most of people. I may try my best to make this reference could be reliable for the 16&18 bits system.
The final version of ProVol will have the listed characteristics:
Shielded by a aluminium case
Internal temperature sense with TMP117(0.1℃ accuracy)
Controlled by an encoder
Large OLED/IPS LCD display
USB-C socket for the communication with PC.
I just finished the test board. The reference of the test boar is REF5040 from TI. I used the 4.096V in my code, but the real voltage is 4.0965V(24℃). I didn’t do any calibration or adjustment in my code. As you can see, the Initial accuracy of the MAX5719A is great.