diego.fan
Member level 3
Hi all, could you please give me some hint?
I'd like to realise subtraction on differential signals. My purpose is to cancel common mode signal and to amplify differential mode signal.
How to make subtraction on voltage?
1. Because the frequency is lower than 100Mhz, I cannot use inductors.
2. Because the peak to peak of differential signals is from 0 to Vdd. It means after subtraction, the range will be from Vdd to -Vdd. Which kind of circuit can realise this large output range?
Thanks.
I'd like to realise subtraction on differential signals. My purpose is to cancel common mode signal and to amplify differential mode signal.
How to make subtraction on voltage?
1. Because the frequency is lower than 100Mhz, I cannot use inductors.
2. Because the peak to peak of differential signals is from 0 to Vdd. It means after subtraction, the range will be from Vdd to -Vdd. Which kind of circuit can realise this large output range?
Thanks.