Title :
A 400-MHz 6-bit ADC with a partial analog equalizer for coaxial cable channels
Author :
Hadji-Abdolhamid, Amir ; Johns, David A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
High-speed high-resolution analog-to-digital converters (ADC) are one of the major bottlenecks in digital communication systems. This work investigates the ADCs bit requirements for wired communication applications and presents an efficient partial analog equalization approach to improve the performance of the front-end ADC by 2-3 bits. The proposed partial analog equalizer along with a 6-bit 400-MHz flash ADC consumes 106 mW of power with 34-dB SNDR in a 0.18-/spl mu/m CMOS process. For a 400-Mb/s data transmission over a 240-m coaxial channel, experimental results show an error performance improvement equivalent to an 8-bit ADC system.
Keywords :
CMOS analogue integrated circuits; analogue-digital conversion; coaxial cables; digital communication; equalisers; 0.18 microns; 106 mW; 400 MHz; 400 Mbit/s; 6-bit ADC; 6-bit flash ADC; 8-bit ADC system; CMOS process; coaxial cable channels; coaxial channel; digital communication systems; efficient partial analog equalization approach; error performance improvement; front-end ADC; high-resolution analog-to-digital converters; high-speed analog-to-digital converter; partial analog equalizer; wired communication applications; Additive noise; Application software; Bit error rate; CMOS process; CMOS technology; Coaxial cables; Data communication; Decision feedback equalizers; Digital communication; Quantization;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257116
