Nyquist-Rate AD-Converters with Signal Dependent Sampling Rate

具有信号相关采样率的奈奎斯特速率 AD 转换器

• 批准号: 250702138
• 负责人: Professor Dr.-Ing. Dirk Killat
• 金额: --
• 依托单位: Lehrstuhl Mikroelektronik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/250702138?language=en
• 关键词: Nyquist; Rate; AD; Converters; Signal

The objective is to develop methods for dynamic sampling rates in Nyquist ADCs. The ambition are methods that do not increase the effort an power due to additional analog circuitry, like additional window comparators. Starting point is the characteristics of the output signal of the quantiser in ADCs with feedback DAC.The second objective is a mathematical description and model of the feedback loop and the processing of the asynchronous ADC. In doing so the functional blocks are combined and stability criteria are derived for rules and standards for asynchronous ADCs.In a third step the theoretical work is verified on a demonstrator (test chip). It is not the primary goal just to push the FOM, but to get a model kit for asynchronous ADCs. A modular concept of the test chip with various options for evaluation and the experience in 65nm-designs and ADC-designs significantly reduces the risk of the tape out.A key aspect of the evaluation is the matching of ideal and measured characteristics. Deviations from normal conditions due to parasitic effects should be implemented in the original model to achieve full understanding of the system.

目的是开发奈奎斯特adc动态采样率的方法。目标是不增加由于额外的模拟电路，如额外的窗口比较器的努力和功率的方法。起始点是带反馈DAC的数量器输出信号的特性。第二个目标是反馈回路和异步ADC处理的数学描述和模型。在此过程中，将功能块组合在一起，并为异步adc的规则和标准派生出稳定性标准。第三步，在一个演示器（测试芯片）上验证理论工作。主要目标不仅仅是推动FOM，而是获得异步adc的模型套件。具有各种评估选项的测试芯片的模块化概念以及65nm设计和adc设计的经验显着降低了胶带脱落的风险。评估的一个关键方面是理想特性和测量特性的匹配。由于寄生效应导致的对正常情况的偏差，应在原始模型中执行，以实现对系统的充分理解。

项目成果

A unary coded current steering DAC with sequential stepping of the thermometer coded register in 1 and 2 LSB steps

一元编码电流控制 DAC，以 1 和 2 LSB 步长顺序步进温度计编码寄存器

• DOI: 10.23919/mipro.2018.8400017
• 发表时间: 2018
• 期刊: 2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)
• 作者: S. Bramburger;P. Pitonak;D. Killat
• 通讯作者: D. Killat

Interpolation algorithm for asynchronous ADC-data

异步 ADC 数据的插值算法

• DOI: 10.5194/ars-15-163-2017
• 发表时间: 2017
• 期刊: Advances in Radio Science
• 影响因子: 0.4
• 作者: S. Bramburger;B. Zinke;D. Killat
• 通讯作者: D. Killat