Title page for etd-0713104-153009


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URN etd-0713104-153009
Author Tzung-Je Lee
Author's Email Address No Public.
Statistics This thesis had been viewed 5351 times. Download 3593 times.
Department Electrical Engineering
Year 2003
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Low-Variation 1 MHz Clock Generator,High Sensitivity Linear Voltage-to-Frequency Converter,and High-PSR Bias Circuit for NTSC SYNC Separation
Date of Defense 2004-06-16
Page Count 71
Keyword
  • NTSC SYNC separation
  • PSR
  • VFC
  • voltage-to-frequency converter
  • power supply rejection
  • clock generator
  • Abstract This thesis includes three topics. The first topic is a low-variation 1 MHz clock generator. The second one is a high sensitivity linear voltage-to-frequency converter. The last one is a high-PSR bias circuit for NTSC SYNC separation. All of the circuits can be applied to related consumer electronic products.
    The low-variation 1 MHz clock generator includes a bias circuit which automatically compensates the drifting caused by temperature variations. Furthermore, the circuit contains neither BJTs nor diodes to reduce the area cost. The frequency variation is measured to be less than 2.55\% in the range of 0℃~90℃.
    The high sensitivity linear voltage-to-frequency converter is mainly constructed by a window comparator[11]. We analyze and improve the performance of accuracy to achieve both high accuracy and high sensitivity. The accuracy error is less than 1% and sensitivity is 84 KHz/V in the voltage range of 0.1V~0.8V.
    The high-PSR bias circuit for NTSC SYNC Separation is implemented by a bandgap reference which is controlled by a feedback loop to reduce the interference of the environment. The measurement variation of the bandgap reference is less than 1\% when the variation of power supply is 10\%. The sensitivity of the bandgap reference to temperature is measured to be 0.0006V/℃.
    Advisory Committee
  • Sying-Jyan Wang - chair
  • Shen-Fu Hsiao - co-chair
  • Jihching Chiu - co-chair
  • Chua-Chin Wang - advisor
  • Files
  • etd-0713104-153009.pdf
  • indicate access worldwide
    Date of Submission 2004-07-13

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