Title :
A low power Mobile TV tuner baseband for CMMB application
Author :
Yuan, Fang ; Ma, Heping ; Yan, Jun ; Shi, Yin ; Foster Dai, Fa
Author_Institution :
Suzhou-CAS Semicond. Integrated Technol. Res. Center, Suzhou, China
Abstract :
A mobile TV tuner baseband for the newly established China Mobile Multimedia Broadcasting (CMMB) is presented. The baseband VGA achieves more than 40 dB gain tuning with temperature compensation. The baseband filter provides 0.5 dB passband ripple and 35 dB attenuation at 6 MHz with the cutoff frequency at 4 MHz. In addition, the calibration of filter is reported to achieve the bandwidth accuracy of 3%. A DC offset cancellation circuit is also introduced to remove the offset from layout and self-mixing, and the remaining offset voltage and current consumption are only 6 mV and 412 ¿A respectively. Implemented in a 0.35 ¿m SiGe technology with 1.1 mm2 die size, this tuner baseband achieves OIP3 of 25.5 dBm and consumes 16.4 mA under 2.8-V supply.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; amplifiers; band-pass filters; calibration; circuit tuning; compensation; low-power electronics; mobile television; television broadcasting; CMMB application; China Mobile Multimedia Broadcasting; DC offset cancellation circuit; SiGe; bandwidth accuracy; baseband VGA; current 16.4 mA; current 412 muA; current consumption; cutoff frequency; filter calibration; frequency 4 MHz; frequency 6 MHz; low power mobile TV tuner baseband filter; offset voltage; passband ripple; silicon germanium BiCMOS technology; size 0.35 mum; temperature compensation; voltage 2.8 V; voltage 6 mV; Band pass filters; Baseband; Circuit optimization; Digital multimedia broadcasting; Gain; Mobile TV; Multimedia communication; TV broadcasting; Tuners; Tuning;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734870
