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A Stable 4th-Order Delta-Sigma Modulator with an FIR predictor

Toshiyuki Okamoto, Y. Maruyama, A. Yukawa

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Abstract

A novel approach for a stable high-order delta-sigma modulator is presented. The modulator provides 16 bit resolution at 20kHz bandwidth using 4th-order noise shaping structure at an oversampling ratio of 64. The modulation loop is completely stabilized by an FIR prediction technique. The architecture inherently has less sensitivity to component mismatch. The total hardware is much the same as the noise shaping integrators.

About this research paper

What this paper is about

A novel approach for a stable high-order delta-sigma modulator is presented. The modulator provides 16 bit resolution at 20kHz bandwidth using 4th-order noise shaping structure at an oversampling ratio of 64. The modulation loop is completely stabilized by an FIR prediction technique. The architecture inherently has less sensitivity to component mismatch. The total hardware is much the same as the noise shaping integrators.

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OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A novel approach for a stable high-order delta-sigma modulator is presented. The modulator provides 16 bit resolution at 20kHz bandwidth using 4th-order noise shaping structure at an oversampling ratio of 64. The modulation loop is completely stabilized by an FIR prediction technique. The architecture inherently has less sensitivity to component mismatch. The total hardware is much the same as the noise shaping integrators.

Key concepts: Oversampling, Delta-sigma modulation, Integrator, Noise shaping, Delta modulation, Modulation (music), Bandwidth (computing), Finite impulse response

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