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A low voltage low power sigma delta modulator was presented. A sigma delta modulator architecture which was very adapt to low voltage low power applications was proposed. With the advantage of both unity gain sigma delta modulator and traditional sigma delta modulator, it relaxed the requirement of the OTA performance and decreased the complex of the circuit. For lower power consumption as soon as...
With high resolution ADC has been widespread used in communication and multimedia, oversampling Sigma-Delta ADC becomes the main path of implementing high resolution ADC. Oversampling Sigma-Delta ADC is composed of two basic blocks: a noise shaping sigma delta modulator and a digital signal processing block for filtering and decimation. This paper mainly discuss noise shaping sigma delta modulation...
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