Title :
ADC resolution enhancement by an analog decorrelator
Author :
Hadji-Abdoeharnid, A. ; Johns, David A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Downsview, Ont., Canada
Abstract :
High speed and high resolution ADCs are one of the major blocks in digital communication systems. In this paper, it is shown that by reducing the correlation between the ADC input samples, with the use of a simple analog decorrelator filter, the performance of the ADC is considerably enhanced. For an application of 600 Mb/s data transmission over coaxial cable, this technique shows 2.5 bits improvement. Finally, two circuit architectures are presented for the implementation of the decorrelator in 0.25 μm CMOS technology with 2.5 V supply
Keywords :
CMOS analogue integrated circuits; active filters; analogue processing circuits; analogue-digital conversion; current-mode circuits; decorrelation; 0.25 micron; 2.5 V; 600 Mbit/s; ADC input samples; ADC resolution enhancement; CMOS technology; analog decorrelator; circuit architectures; coaxial cable; data transmission; decorrelator filter; CMOS technology; Circuits; Coaxial cables; Decorrelation; Digital communication; Digital filters; Finite impulse response filter; Intersymbol interference; Neck; Quantization;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.856090
