搜索结果: 1-6 共查到“Sigma-delta”相关记录6条 . 查询时间(0.046 秒)
On Incremental Sigma-Delta Modulation with Optimal Filtering
Sigma-Delta (Σ∆ ) incremental A/D converter optimal filter Σ∆ transfer function time-domain analysis
2015/8/12
The paper presents a quantization-theoretic framework for studying incremental Σ∆ data conversion systems. The framework makes it possible to efficiently compute the quantization intervals and h...
数字滤波器在sigma-delta ADC芯片中占据了大部分芯片面积,该文提出了一种数字滤波器结构,这种结构滤波器采用一个控制单元和一个加法器取代了Hogenauer结构滤波器中差分器的多个加法器,从而减小数字电路的面积。一个采用这种结构的4阶的数字滤波器在CYCLONE II FPGA芯片中被实现,耗费的硬件资源比Hogenauer结构的滤波器减少近29%。
高精度音频多位sigma-delta调制器设计
sigma-delta调制器 开关电容积分器 高精度 多位
2011/1/20
设计一个内部采用4位量化器的二阶单环多位sigma-delta调制器。为解决反馈回路中多位DAC元件失配导致的信号谐波失真问题,该sigma-delta调制器采用CLA(Clocked averaging algorithm)技术提高多位DAC的线性度,同时采用动态频率补偿技术增加积分器的稳定性。调制器信号频率带宽为24 kHz,过采样率(OSR)为128,采用尺寸为0.5 µm的CM...
Sigma-Delta Voltage to Frequency Converter With Phase Modulation Possibility
Sigma-Delta Voltage Frequency Converter Phase Modulation Possibility
2009/7/28
Voltage to frequency converter (VFC) is an oscillator whose frequency is linearly proportional to control voltage. There are two common VFC architectures: the current steering multivibrator and the ch...
A New Approach to Design Low Power Continues-Time Sigma-Delta Modulators
Sigma-delta modulator Current-mode Nonlinear Transconductance
2010/2/2
This paper presents the design of a low power
second-order continuous-time sigma-delta modulator for low power
applications. The loop filter of this modulator has been implemented
based on the nonl...