Hi;
On the ADS8910B datasheet page-22, you have:
FSR=+/-Vref
I will interpret it as:
FSR = Vref -(-Vref) = 2*Vref
So this matches the 1LSB formula on page-23
1LSB = (2*Vref)/(2^18) = Vref/2^17
Now, if I connect 2.5V reference voltage to REFIN(pin-3) and connect REFM pin to ground, then I will get 1LSB voltage as following.
If Vref = 2.5V, then 1LSB = 19.07uV
Is my understanding correct? Please confirm. Thanks so much!
Wen
