1 / 13

A Power Efficient 6-Bit TIQ ADC Design for Portable Applications

A Power Efficient 6-Bit TIQ ADC Design for Portable Applications. Professor : Da- Huei Lee Student : Zong -You He MA230203 何宗侑. outline. Introduction TIQ Comparator Reference. INTRODUCTION. 奈奎氏取樣率 ( Nyquist -Rate) 超 取樣 (Oversampling) TIQ Comparator.

mindy
Download Presentation

A Power Efficient 6-Bit TIQ ADC Design for Portable Applications

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. A Power Efficient 6-Bit TIQ ADC Design for Portable Applications Professor : Da-Huei Lee Student : Zong-You He MA230203 何宗侑

  2. outline • Introduction • TIQ Comparator • Reference

  3. INTRODUCTION • 奈奎氏取樣率(Nyquist-Rate) • 超取樣(Oversampling) • TIQComparator

  4. 奈奎氏取樣率(Nyquist-Rate)ADC • 在訊號取樣時(Sampling),會造成失真的現象(aliasing),為避免訊號失真,信號在取樣時所使用的頻率,必須要為原訊號頻率的二倍以上,即為奈奎斯特取樣定理(Nyquist Sampling Theorem),而此取樣頻率則稱為奈奎斯特頻率(Nyquist frequency)或稱為奈奎斯特率(Nyquist rate)。

  5. 超取樣(Oversampling) • 超取樣類比數位轉換器通常操作在20倍到512倍的輸入奈奎氏率,藉由濾除頻帶以外的量化雜訊,以提高輸出訊號的雜訊比(Signal to Noise Ratio:SNR),等於是利用頻寬換精確度。

  6. flash adc

  7. Tiq(threshold inverting quantization) flash adc

  8. Four cascaded inverters are used as TIQ comparator circuit

  9. 3bit TIQ

  10. Tiq Simulation

  11. Different schemasADC

  12. REFERENCE • Mishra, S.N., Arif, W.,Mehedi, J.,Baishya, S., “A Power Efficient 6-Bit TIQ ADC Design for Portable Applications,” Consumer Electronics ?? Berlin ICCEBerlin2013. IEEE Third International Conference on, pp.235-239,  Sept. 2013 • 侯岳宏,民國97年6月,切換電流式三角積分調變器設計與實作碩士論文,台北:台北科技大學電機工程系碩士班。

  13. THANK YOU END

More Related