McClure, Qualey & Rodack, LLP
Sigma-delta modulators with high speed feed-forward architecture
A sigma-delta modulator is provided for generating a digital output signal. The sigma-delta modulator is used to generate a digital output signal. The sigma-delta modulator includes a multi-stage loop filter and a quantizer. The multi-stage loop filter receives an analog input signal and generates an integrated output signal according to the analog input signal. The quantizer is coupled to the multi-stage loop filter. The quantizer receives the integrated output signal and quantizes the integrated output signal to generate the digital output signal. Different feed-forward paths of the sigma-delta modulator are available for different frequency bands.
MediaTek Inc.
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Yu-Hsin Chen-Yen Hung-Chieh
Lin Ho Tsai