Title :
A 2.5-V ΣΔ modulator in 0.25-μm CMOS for ADSL
Author :
Río, R. Del ; Medeiro, F. ; de la Rosa, J.M. ; Verdú, B. Pérez- ; Vázquez, A. Rodríguez-
Author_Institution :
Inst. de Microelectron. de Sevilla, CNM-CSIC, Seville, Spain
Abstract :
This paper presents a dual-quantization cascade SC ΣΔ modulator intended for A/D conversion in ADSL applications. The modulator combines a low oversampling ratio with 3-bit resolution in the last stage, to achieve 14bit@4.4MS/s (16×) and 15bit@2.2MS/s (32×) with no need of correction/calibration mechanisms. It consumes 66 mW from a single 2.5-V supply and has been implemented in 0.25-μm CMOS technology.
Keywords :
CMOS integrated circuits; digital subscriber lines; sigma-delta modulation; switched capacitor networks; ΣΔ modulator; 0.25 micron; 2.5 V; 66 mW; ADSL; CMOS; dual-quantization cascade SC modulator; oversampling ratio; Bandwidth; CMOS technology; Delta modulation; Energy consumption; Frequency; Internet; Quantization; Robustness; Sampling methods; Signal resolution;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010220
