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A low-power high-linearity CMOS baseband filter for wideband CDMA applications

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4 Author(s)
Shi, C. ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Yue Wu ; Elwan, H.O. ; Ismail, M.

In this paper, the design and performance of a CMOS fifth-order low-pass anti-aliasing filter for baseband mobile communication are presented. Based on a differential difference amplifier (DDA), a novel fully-differential Sallen-Key filter is realized. This fifth-order filter operates at a supply voltage of 3 V and has a cutoff frequency of 19 MHz. It provides up to 1 V differential output with 0.03% total harmonic distortion (THD) and dissipates only 4.5 mW. The input IP3 is +39 dBm, and the input-referred noise in the passband is 60 nV/√(Hz)

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Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on  (Volume:2 )

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