Design of Continuous Time Multibit Sigma Delta ADC for Next Generation Wireless Applications

Abstract

This paper presents the design of CT ΣΔ modulator which can provide high DR and SNR over a 20 MHz signal bandwidth. So far all the CT SDM uses either feedback or feedforward loop filter architecture. The proposed topology is a 3rd order low-pass sigma-delta modulator, which employs a combination of feedforward and feedback schemes. Loop filter is designed… (More)

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