i expan a 10ns pulse to 1uS using a simple RC circuit
my application tries to measure a 1uS wide capacitive discharging curve amplitude immediately after occurance of pulse
input Range : 0-2.5V
i wanted to use a simplest ADC with immediate parallel outputs so i have stopped at ADC08L060, up on a edge detection i would immediately take the pulse amplitude of the discharging curve, any how the input takes 500ns to come to half the amplitude in this i want to measure amplitude approximately
my doubt is how to configure the ADC for measuring the full scale range of 0-2.5V, i have seen the ADC being biased using 3V source, what is the best way to use this for measuring digital equivalent of signal varying 0-2.5V
i see the datasheet saying range of ADC is between VRT and VRB, VRT can be max VA which is 3V, and VRB can be minimum VRT-0.5, so i feel i can easily measure 0-2.5V with this, can i do small changes of connecting VRT to 3V and VRB to GND in fig30 of datasheet ?
should i have to take care of any protection at inputs
kindly suggest me the Value of VRT and VRM and VRB to be maintained to cover this range, or should i have to half the voltage before and i have to dc shift above the reference voltage and then only can i measure ?