A widely tunable continuous-time LPF for a direct conversion DBS Tuner

摘要：

A continuous-time 7th-order Butterworfh Gm-C low pass filter (LPF) with on-chip automatic tuning circuit has been implemented for a direct conversion DBS tuner in a 0.35um SiGe BiCMOS technology. The filters -3dB cutoff frequency f0 can be tuned from 4MHz to 40MHz. A novel translinear transconductor (Gm) cell is used to implement the widely tunable and high linear filter. The filter has -0.5dB passband gain,28nV/Hz1/2 input referred noise,-2dBVrms passband IIP3,24dBVrms stopband IIP3. The I/Q LPFs with the tuning circuit draw 16mA (with f0)=20MHz) from 3.3 V supply,and occupy an area of 0.45 mm2.

作者: Bei Chen Fangxiong Chen Heping Ma Yin Shi Fa Foster Dai

作者单位: Institute of Semiconductors,Chinese Academy of Sciences.P.O.Box 912,Beijing,China Elec.& Computer Eng.Department,Auburn University,Auburn,AL 36849-5201,USA

会议类型: 国际会议

会议名称: 9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

会议地点: 北京

会议语种:英文

页码: 1737-1740

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）