Rahul_K
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Posts: 9
India
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Hello Everyone, I want to design an Fully Differential High Pass Filter which can give pass-band gain of 10dB at 5GHz, for some high speed circuit. I have a Fully Differential Op-Amp with proper UGB, but the problem is the capacitor used for HPF, which comes at the input of an OPAmp is blocking the DC common mode voltage which needs to be maintained at the inputs. Can you suggest an HPF architecture which will remove capacitor from signal path. There are architectures like, Servo Feedback, which removes Capacitor frm signal path but they are more suitable for single ended architecture and fails for Differential i/p-o/p. I don't want to use Inductor as it makes circuit bulky.
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