发明名称 |
DIGITAL/ANALOG CONVERTER USING NEW DEGLITCH ENERGY CIRCUIT AND NEW TWO-DIMENSIONAL CURRENT CELL SWITCHING ORDER TO IMPROVE CAPACITY FOR FREQUENCY AND SATISFY STATIC AND DYNAMIC CHARACTERISTICS |
摘要 |
PURPOSE: A digital/analog converter using a new deglitch energy circuit and a new two-dimensional current cell switching order to improve capacity for frequency and satisfy static and dynamic characteristics is provided to prevent deterioration of capacity for frequency due to glitch energy at a high-speed operation by restraining the glitch energy. CONSTITUTION: An upper bit thermometer decoder(110) is used for receiving upper bits of digital binary data to thermometer codes in order to reduce glitch energy and enhance a monotone increasing property. A delay element(140) delays lower bits as much as an operating period of the upper bit thermometer decoder. A first deglitch energy circuit(130) delays an output signal of the upper bit thermometer decoder and converts the delayed signal in order not to generate a glitch. A second deglitch energy circuit(160) delays an output signal of the delay element and converts the delayed signal in order not to generate the glitch. A binary weighted current source for lower bit is used for converting a digital value to an analog value by changing an output signal of the second deglitch energy circuit to the current. A thermometer code current source matrix is used for converting a digital value to an analog value by changing an output signal of the first deglitch energy circuit to the current.
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申请公布号 |
KR20040099887(A) |
申请公布日期 |
2004.12.02 |
申请号 |
KR20030032017 |
申请日期 |
2003.05.20 |
申请人 |
INHA UNIVERSITY |
发明人 |
CHO, HYEON HO;YOON, GWANG SEOP |
分类号 |
H03M1/00;(IPC1-7):H03M1/00 |
主分类号 |
H03M1/00 |
代理机构 |
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