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

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 vo...

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Bibliographic Details
Main Authors: Shi, C., Wu, Y., Elwan, H.O., Ismail, M.
Format: Conference Proceeding
Language:English
Subjects:
Baseband
Broadband amplifiers
Cutoff frequency
Differential amplifiers
Low pass filters
Mobile communication
Multiaccess communication
Total harmonic distortion
Voltage
Wideband
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Summary: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//spl radic/(Hz).
DOI:10.1109/ISCAS.2000.856281