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A low power, high resolution two-step hybrid delta-sigma/pipelined modulator (HDSP) is presented. The feedback architecture of the HDSP modulator is modified to allow higher orders of noise shaping. The pipelined quantizer is simplified. Finally, the input signal range of the HDSP modulator is extended beyond the supply voltage. The prototype chip is implemented in a 0.18/im CMOS process. With a 1...
A hybrid delta-sigma/pipelined modulator is presented in this paper. The proposed modulator takes advantage of the high resolution and distributed pipelined quantization, and combines it with the noise shaping property of a delta-sigma modulator. As a result, gain, swing, and slew requirements of the integrators are significantly reduced. The modulator also makes use of the latency in the pipelined...
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