Dissertation > Excellent graduate degree dissertation topics show

Σ △ ADC digital filter circuit and jitter circuit design

Author: ShengKaiYi
Tutor: XuJun；ZengXiaoJun
School: Fudan University
Course: Electronics and Communication Engineering
Keywords: Σ △ ADC Oversampling Noise shaping Digital decimation filter Shake Platform area
CLC: TN792
Type: Master's thesis
Year: 2010
Downloads: 162
Quote: 0
Read: Download Dissertation

Abstract


Multiple ADC implementation methods , Σ △ ADC based on high resolution , good linearity , and the advantage of easy integration with digital systems are widely used in the field of audio and electronic measurement . Traditional Nyquist - type ADC in a standard CMOS process , the conversion accuracy can be achieved is limited by the matching of the component accuracy is difficult to obtain high accuracy. Σ △ ADC uses the oversampling technique , and for shaping the quantization noise , and can effectively attenuate the output signal of the in-band quantization noise, and to improve the signal - to - noise ratio in the output band , makes use of low-accuracy converter mold with high accuracy A / D conversion possible. Compared with Nyquist type ADC , Σ △ ADC reduce the higher requirements of precision components match and try to improve the accuracy of the pressure shifted to the digital processing chain , to take full advantage of faster and faster declining cost of digital circuits development trend. Σ △ ADC mainly of a modulating portion and a digital decimation filter consisting of two parts . Σ △ ADC basic principle on the basis of the study design of the digital decimation filter , and select the structure of the battery measured . Taking into account the design requirements for battery measurement system : ( 1) multi-channel monitoring : voltage channel temperature channel and the current channel ; ( 2 ) low-cost , low-power , high-precision ; (3 ) channel input approximate DC signal. Smaller cost consideration in the design , add jitter (Dither) technology to effectively reduce the near - DC signal measurement platform area (flat-zone) phenomenon . Σ △ ADC voltage channel , this design temperature channel measurement range is 0 ~ 5V, the accuracy is 12 ; measuring range of the current channel is - 64mv - 64mv accuracy is 14 . The chip tapeout Vangard 0.5um process chip test results show that the performance of the ADC to achieve the design is expected indicators .

Related Dissertations

  1. Design and Application of Scope Anti-Shake System,TH743
  2. Study of Acoustical Signal Transmitter Which Based on Sigma-Delta Modulation,TN761
  3. A High-Performance Audio ∑△ ADC in 65nm CMOS Process,TN792
  4. IP-based DiffServ Scheduling Algorithm,TN915.09
  5. SSL protocol used in network conference system improvement and research,TP393.08
  6. Millimeter wave detector signal analysis and processor design,TN911.6
  7. The FRC algorithm TFT-LCD and Implementation,TN873.93
  8. A Design and Analyse for the High-powered Modulator of the Fourth Order Sigma-Delta,TN761
  9. Based on sigma-delta modulation , low noise , high efficiency buck DC-DC converter with,TM46
  10. Algorithm Research on Image Coregistration of SAR,TN957.52
  11. Non-invasive Detection System for Metallic Foreign Body,TH776
  12. An Existential Approach to Saul Bellow’s Dangling Man,I712
  13. PVDF sensors and detection methods for driving health monitoring study,TP212
  14. Digital Phase-locked Detection System Based on FPGA,TN911.8
  15. Design of Continuous-time Sigma-Delta Modulator,TN761
  16. A 14 Bit Sigma-Delta ADC Using Feed-Forward Structure,TN792
  17. Analysis of Nonlinear Motion Behavior of Coupled Heave-pitch Motion for the Deep Sea Spar Platform,U674.381
  18. Research and Implementation of Network Measurement for Streaming Media Transmission,TP393.06
  19. Delta-sigma modulator used in audio bandwidth low-power adjustable,TN761
  20. Research on High Precision Embedded Digital Power Regulator Applied to High Temperature Vacuum Kettle,TQ164
  21. Ultra-precision micro- macro motion and drive designs,TM301.2

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Digital circuits > Digital-analog , digital to analog conversion circuit
© 2012 www.DissertationTopic.Net  Mobile