The analog side of a sigma-delta converter (a 1-bit ADC) is very simple. The digital side, which is what makes the sigma-delta ADC inexpensive to produce, is more complex. It performs filtering and decimation. To understand how it works, you must become familiar with the concepts of ove...
Enter an ADC reference voltage in the lower input field. The ADC will convert input voltages that fall between +/- VREF. The demo will output all ones for a +VREFinput and all zeros for a -VREF. input. However a real ADC would use internal scaling to limit the allowed ones and zeroes...
Delta-Sigma ADC ,也有称为Sigma-Delta ADC、ΔΣ ADC、ΣΔ ADC。 Delta-Sigma ADC 的应用非常广泛,特别是对于低频、高分辨率的信号处理场景,我们可能在不经意之间就使用到了 Delta-Sigma ADC,比如音频 Codec、生理监测、环境/过程控制,还有树莓派扩展板 “ADC Pi” 中的MCP3424也是一颗 Delta-Sigma ADC。 然...
之前在介绍 Σ-Δ ADC(称为 Sigma-Delta 或 Delta-Sigma ADC,顺序混用) 的时候,提到过 Noise Shaping(噪声整形)的概念,有网友表示希望展开讲讲。 我检索了一番,在 TI《How Delta-Sigma ADCs Work》 与 ADI 《Sigma-Delta ADCs Tutorial》经典系列中确实有提及,讲的很专业,但也许过于“专业”,以至于让一些朋...
4.Pipeline型 这种类型的ADC,结合了Flash型和SAR型,先用分压电阻比较法,快速判断输入电压落入的范围,然后用逐次逼近法在此范围内取得精确的转换结果。此类型ADC很少在单片机中采用。 参考资料: ADI: The Data Conversion Handbook ADI: Sigma-Delta ADC Tutorial...
4.Pipeline型 这种类型的ADC,结合了Flash型和SAR型,先用分压电阻比较法,快速判断输入电压落入的范围,然后用逐次逼近法在此范围内取得精确的转换结果。此类型ADC很少在单片机中采用。 参考资料: ADI: The Data Conversion Handbook ADI: Sigma-Delta ADC Tutorial...
4.Pipeline型 这种类型的ADC,结合了Flash型和SAR型,先用分压电阻比较法,快速判断输入电压落入的范围,然后用逐次逼近法在此范围内取得精确的转换结果。此类型ADC很少在单片机中采用。 参考资料: ADI: The Data Conversion Handbook ADI: Sigma-Delta ADC Tutorial...
这种类型的ADC,结合了Flash型和SAR型,先用分压电阻比较法,快速判断输入电压落入的范围,然后用逐次逼近法在此范围内取得精确的转换结果。此类型ADC很少在单片机中采用。 参考资料: ADI: The Data Conversion Handbook ADI: Sigma-Delta ADC Tutorial 本站仅提供存储服务,所有内容均由用户发布,如发现有害或侵权内容,...
ADC Architectures III Sigma-Delta ADC Basics教材.pdf,MT-022 TUTORIAL ADC Architectures III: Sigma-Delta ADC Basics by Walt Kester INTRODUCTION The sigma-delta (Σ-Δ) ADC is the converter of choice for modern voiceband, audio, and high- resolution precis
However, since the frequency-domain is global in nature, one has sometimes difficulties in determining transient characteristics, such as attack time, or in understanding the nature of spurs and disturbances which appear at ADC output for certain input signals. In this tutorial paper, we perform ...