A 1-V 3.5-mW CMOS switched-opamp quadrature IF circuitry for Bluetooth receivers

V.S.-L Cheung,Wing-Hung Ki Wing-Hung Ki,H.C Luong

doi:10.1109/vlsic.2002.1015067

A 1-V 3.5-mW CMOS switched-opamp quadrature IF circuitry for Bluetooth receivers

V.S.-L Cheung, Wing-Hung Ki Wing-Hung Ki + Show 1 more

https://doi.org/10.1109/vlsic.2002.1015067

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Publication Date: Jun 13, 2002

Citations: 2

Affiliation: Hong Kong University of Science and Technology, University of Hong Kong

#IF Circuitry #Quadrature IF + Show 8 more

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Abstract

Based on only half-delay switched-capacitor integrators, a 7/sup th/-order IF-filter and a 3/sup rd/-order /spl Sigma//spl Delta/ modulator using a novel noise-shaping extension technique are implemented for a Bluetooth receiver in a 0.35-/spl mu/m CMOS process. At a 1-V supply, the quadrature IF circuitry achieves a measured IIP3 of -3 dBm at a nominal gain of 24 dB through a 48-dB variable-gain control with a power dissipation of 3.5 mW.

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