An 8-bit a/d converter has vref- = -1.2 v and vref+ = 4.1 v. the analog input signal vin has a frequency range of 200 hz to 8 khz. a) if vin = 5 v, what is the binary value on the a/d output pins? b) if vin = -2v, what is the binary value on the a/d output pins? c) if vin = .5 v, what is the binary value on the a/d output pins? d) what is the minimum sampling rate of the a/d converter to get an accurate digital version of the analog signal? e) extra credit: if this were a 12-bit a/d converter, what would be the answer to part c)?