Signal smaller than the ADC’s input range

Question

My signal is smaller than the ADC&rsquo;s input range. Should I gain up the signal to match the full input range?

aine · Accepted Answer

S et the signal chain gain so that the amplifiers' total noise is the same or a bit less than the ADC's. 
 Any higher gain makes the ADC driver work harder without helping the system SNR. 
 Don't feel obligated to gain the signal up to match the ADC's full input range unless that helps system SNR)

Electronic Design Services - PartnerZone

Signal smaller than the ADC’s input range

Top Replies