Because each comparison is done at a different point in time, it is very important that the analog sample does not change over that time, or the resulting number would be invalid. This is the purpose of the Sample and Hold circuit, which is essentially a switch and a capacitor to store ...
图2比较了ADC的奈奎斯特操作、过采样方案和Σ-Δ调制(也是过采样)方案。图2. Nyquist comparison 图2a...
图2比较了ADC的奈奎斯特操作、过采样方案和Σ-Δ调制(也是过采样)方案。图2. Nyquist comparison 图2a...
低电压高分辨率二阶sigmadelta型ADC的研究、设计与实现
ADC有很多自身的有点例如对器件匹配的要求较低能够达到高于 14bit的精度等等 本论文的设计内容为18V16bit精度90dBA 信噪比的二阶 sigma-delta过采样ADC完成了模拟调制器部分的电路设计和数字滤波 器部分的编码并对实际电路进行了仿真 本文首先对各种类型的Sigma-DeltaADC进行了研究接着按照给出 ...
Comparison of a discrete-time-based and a continuous-time-based signal chain. Image courtesy ofAnalog Devices Disadvantages of a CTSD With switched-capacitor circuits, we can adjust the circuit dynamics by changing the clock frequency. That’s why a DTSD can generally support a wide range of sa...
Table 4. SDADC versus SAR ADC feature comparison Feature Maximum sampling rate Resolution Input mode Embedded gains Number of channels Number of instances Automatic offset calibration Analog watchdog Trigger sources for regular conversion Trigger sources for injected conversion Input range Reference voltage ...
Although an exact comparison is difficult, the SC nature of a sampled-input ADC does necessi- tate higher-speed amplifiers than does a CT∑Δ implementation, leading to higher power dissipation for a pipeline or DT∑Δ ADC in general. The lack of a need for high-speed settling in CT∑Δ...
高速宽带连续型SigmaDelta调制器的研究与设计 华中科技大学 硕士学位论文 高速宽带连续型SigmaDelta调制器的研究与设计 姓名：许金波 申请学位级别：硕士 专业：微电子学与固体电子学 指导教师：陈晓飞 2011-01-17
economic comparisonThis chapter discusses the design of the analog-to-digital converter (ADC) of a precision smart temperature sensor. This ADC converts the voltages V BE and Δ V BE(generated using the techniques...doi:10.1007/1-4020-5258-8_4Michiel A.P. Pertijs...