the question is about the AD7903 http://www.analog.com/static/imported-files/data_sheets/AD7903.pdf
I have calculate the LSB with
u_LSB = u_in / 2^n
The input voltage (full scale) is u_in = +-5V when Ref=5V and resolution of 16 Bit.
=> u_LSB = +5V / 2^15 = +152,58uV
u_LSB = +10V / 2^16 = +152,58uV
But in the datasheet the u_LSB is 38.15uV:
Where is the mistake?
Thank you in advance.