Title :
Inductorless AGC amplifier for 10GBase-LX4 ethernet in 0.18 μm CMOS
Author :
Aznar, F. ; Celma, S. ; Calvo, B. ; Digón, D.
Author_Institution :
Univ. of Zaragoza, Zaragoza
Abstract :
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.
Keywords :
CMOS digital integrated circuits; amplifiers; automatic gain control; bandwidth allocation; buffer circuits; local area networks; telecommunication channels; 10GBase-LX4 Ethernet; CMOS process; automatic gain control; bandwidth-enhancement buffer; compact inductorless design; cutoff frequency; inductorless AGC amplifier; noise figure 6 dB; power 55 mW; power consumption; voltage 1.8 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080099
