A New Noise Shaping Approach for Sigma-Delta Modulators Using Two-Stage Feed-Forward Delays and Hybrid MASH-EFM

Sigma-delta modulators use a noise-shaping technique to curtail the noise power in band of interest during digital-to-analog conversion. Error feedback modulator employs an efficient transfer function for time varying inputs than any other sigma-delta modulators. However, efficiency conventional degrades and quantizer saturation issue provokes when input signal reaches full scale. This work proposes new which is combination functions two-stage Feed-forward delays novel Hybrid multi-stage shaping-error modulator. The mitigates concern saturation. offered by architecture provides sustainable solutions limit cycles idle tones. simulation concludes that proposed approach obtains comparatively high signal-to-quantization ratio error Other performance parameters like spurious-free dynamic range, effective number bits signal-to-noise plus distortion are also significantly improved.