今天这篇紧接着上一篇,更加具体阐述了time-based ADC的一些要点,现存的相关研究工作。 对于time-based ADC而言,VCO是一个非常重要的组件,继而VCO中存在的噪声和失真问题需要被仔细解决,否则会对系统性能产生很大影响。对于最典型的VCO中存在的非线性,可以使用适合的前馈和反馈结构来解决。对于噪声和jitter问题,可以做...
NS-SAR ADC将过采样技术和噪声整形技术引入到SAR ADC中,在SAR结构低功耗的基础上大大提高模数转换器的精度,是近年来国内外研究的热点。NS-SAR主要分为两种结构,一种是级联积分器前馈结构,采用FIR和IIR滤波器级联,可以实现较为理想的噪声整形效果[1-2]。2012 年,FREDENBURG J A等人首次将该结构用于传统的SAR ADC...
SAR ADCVCO-based comparatorThis paper proposes a technique that uses the number of oscillation cycles (NOC) of a VCO-based comparator to set multiple adaptive bypass windows in a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC).The analysis of the number of bit...
本发明采用两级量化结构,其第一级由粗量化的SAR ADC结构构成,第二级由细量化的VCO‑based ADC结构构成,即利用VCO‑based ADC的固有噪声整形特性对SAR ADC量化后的剩余量进行细量化。在整体上完成10位量化精度的功能,本发明实施例结合了SAR ADC和VCO‑based ADC的优点,在提升量化精度的同时大大减小了功耗和...
本发明采用两级量化结构,其第一级由粗量化的SAR ADC结构构成,第二级由细量化的VCO‑based ADC结构构成,即利用VCO‑based ADC的固有噪声整形特性对SAR ADC量化后的剩余量进行细量化。在整体上完成10位量化精度的功能,本发明实施例结合了SAR ADC和VCO‑based ADC的优点,在提升量化精度的同时**减小了功耗和面积...
Two hybrid, highly digital [equation]ADCs are presented in this work. A SAR+VCO 0-1 MASH architecture is used for a 12-bit scaling friendly ADC which does not require VCO nonlinearity correction...doi:10.1007/978-3-319-61285-0_4Arindam SanyalState...
A 12-bit 30-MS/s VCO-based SAR ADC with NOC-assisted multiple adaptive bypass windows This paper proposes a technique that uses the number of oscillation cycles (NOC) of a VCO-based comparator to set multiple adaptive bypass windows in a 12-... X Pan,X Zhou,S Chang,... - 《半导体...
Table 30. Register 0x11, Successive Approximation Register (Default 0x07FFFF) Bit Type Name Width Default Description 18:0 R SAR error magnitude counts 19 219 to 1 SAR error magnitude counts 19 R SAR error sign 10 SAR error sign 0 = error is positive 1 = error is negative GENERAL-...
A 4th Order Continuous-Time ∆Σ ADC with VCO-Based Integrator and Quantizer by Matthew Jeremiah Park B.S. in Electrical Engineering and Computer Science Massachusetts Institute of Technology, 2004 M.Eng. in Electrical Engineering and Computer Science Massachusetts Institute of Technology, 2005 ...
An analog-to-digital converter (“ADC”) includes an input terminal configured to receive an analog input signal. A first ADC circuit is coupled to the input terminal and includes a V