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Inductorless AGC amplifier for 10GBase-LX4 ethernet in 0.18 μm CMOS

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4 Author(s)
F. Aznar ; Univ. of Zaragoza, Zaragoza ; S. Celma ; B. Calvo ; D. Digon

A new differential automatic gain control post-amplifier for 10GBase-LX4 Ethernet realised in a 0.18 mum CMOS process is presented. Based on a very compact inductorless design, it comprises three cascaded digitally programmable gain stages followed by a bandwidth-enhancement buffer. Results show an overall -3 dB cutoff frequency above 3 GHz over a - 3 to 33 dB linear-in-dB controllable gain range in 6 dB steps with 55 mW power consumption from a 1.8 V single supply.

Published in:

Electronics Letters  (Volume:44 ,  Issue: 6 )