Title :
An active balun for high-CMRR IC design
Author :
Centurelli, Francesco ; Luzzi, Raimondo ; Marietti, Piero ; Scotti, Giuseppe ; Tommasino, Pasquale ; Trifiletti, Alessandro
Author_Institution :
Dept. of Electron. Eng., Rome La Sapeinza Univ., Italy
Abstract :
A circuit topology that provides large bandwidth single-ended to differential conversion is presented. The proposed cell is based on a differential pair where feedback on common mode signal provides about 6 dB conversion gain increase, together with attenuation of common mode signal. Small-signal characterisation is presented, based on a block decomposition of the cell. Measurements on a SiGe test IC show more than 5 dB of gain improvement with respect to a simple differential pair.
Keywords :
Ge-Si alloys; active networks; baluns; integrated circuit design; network topology; semiconductor materials; SiGe; active balun; attenuation; block decomposition; circuit topology; common mode signal; differential conversion; high-CMRR IC design; Attenuation; Circuit topology; Differential amplifiers; Gain; Impedance matching; Optical attenuators; Optical feedback; Optical filters; Optical receivers; Optical signal processing;
Conference_Titel :
Gallium Arsenide and Other Semiconductor Application Symposium, 2005. EGAAS 2005. European
Conference_Location :
Paris
Print_ISBN :
88-902012-0-7
