Title :
A 200-MHz IF 11-bit fourth-order bandpass /spl Delta//spl Sigma/ ADC in SiGe
Author :
Maurino, Roberto ; Mole, Peter
Author_Institution :
Analog Devices, Newbury, UK
fDate :
7/1/2000 12:00:00 AM
Abstract :
This paper demonstrates the design of an integrated fourth-order bandpass sigma-delta converter, which is capable of digitizing a 200-kHz band at 200 MHz with 11-bit accuracy. The converter has been successfully fabricated in a 50-GHz SiGe bipolar technology, and the modulator consumes 21 mA at 3 V. The converter is aimed at the digitization of wireless signals at a high first intermediate frequency with a wide dynamic range.
Keywords :
Ge-Si alloys; bipolar integrated circuits; digital radio; semiconductor materials; sigma-delta modulation; 11 bit; 200 MHz; 21 mA; 3 V; 50 GHz; SiGe; bipolar technology; dynamic range; first intermediate frequency; fourth-order bandpass sigma-delta ADC; wireless signal digitization; Band pass filters; Clocks; Delta modulation; Digital communication; Digital filters; Frequency conversion; Germanium silicon alloys; Receivers; Silicon germanium; Switched capacitor circuits;
Journal_Title :
Solid-State Circuits, IEEE Journal of
