Modeling sigma-delta modulator non-idealities in SIMULINK(R)
Modeling sigma-delta modulator non-idealities in SIMULINK(R)
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DOI：
10.1109/iscas.1999.780739
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发表时间：
1999-05
期刊：
影响因子：
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通讯作者：
S. Brigati;F. Francesconi;P. Malcovati;D. Tonietto;A. Baschirotto;F. Maloberti
中科院分区：
文献类型：
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作者：
S. Brigati;F. Francesconi;P. Malcovati;D. Tonietto;A. Baschirotto;F. Maloberti
本文提出了一套完整的SIMULINK(R)模型，它允许对任何σ - δ调制器进行详尽的行为模拟。所提出的一组模型考虑了大多数σ - δ调制器的非理想性，如采样抖动、kT/C噪声和运算放大器参数（噪声、有限增益、有限带宽、自旋速率和饱和电压）。对于每个模型，我们都给出了考虑效果的描述以及所有实现细节。对一个二阶开关电容σ - δ调制器的仿真结果验证了所提模型的有效性。
This paper presents a complete set of SIMULINK(R) models, which allow exhaustive behavioral simulations of any sigma-delta modulator to be performed. The proposed set of models takes into account most of the sigma-delta modulator non-idealities, such as sampling jitter, kT/C noise and operational amplifier parameters (noise, finite gain, finite bandwidth, slew-rate and saturation voltages). For each model we present a description of the considered effect as well as all of the implementative details. Simulation results on a second-order switched-capacitor sigma-delta modulator demonstrate the validity of the models proposed.