Abstract
A 25-Gb/s optical receiver front-end is presented in standard 65 nm CMOS technology. It consists mainly of a trans-impedance amplifier (TIA), a single-ended to differential-ended converter, and a limiting amplifier (LA). The TIA uses an FCG topology to reduce the input impedance and then increase the bandwidth. The third-order interleaving active feedback technique is employed for the LA to increase bandwidth and reduce gain peaking. From a single voltage supply of 1.2 V, simulation results show that with photodiode capacitance of 80 fF, the trans-impedance gain of 78 dB, the −3 dB bandwidth of 20 GHz and the input-referred noise current of 36.5 pA/sqrt (Hz) at 25 GHz are achieved and 42.5 mW is consumed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
