Wide-Band Continuous-Time Σ∆ Modulator With VCO Quantizer
نویسندگان
چکیده
A methodology for the design of Continuous-Time (CT) Sigma-Delta (Σ∆) modulators with VCO-based quantizer is proposed. The coefficients of the CT Σ∆ modulator are accurately calculated such that the noise transfer function of the modulator is exactly the same as a Discrete-Time (DT) Σ∆ modulator of the same order. Several design examples for different modulator orders and feedback DAC signal shapes are given to validate the proposed methodology.
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