융합신호처리학회논문지 (Journal of the Institute of Convergence Signal Processing)
- 제9권3호
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- Pages.224-229
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- 2008
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- 2765-1134(pISSN)
Application of Constraint Algorithm for High Speed A/D Converters
- Nguyen, Minh Son (School of Electrical Engineering, University of Ulsan) ;
- Yeo, Soo-A (School of Electrical Engineering, University of Ulsan) ;
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Kim, Man-Ho
(School of Electrical Engineering, University of Ulsan) ;
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Kim, Jong-Soo
(School of Electrical Engineering, University of Ulsan)
- 발행 : 2008.07.30
초록
In the paper, a new Constraint algorithm is proposed to solve the fan-in problem occurred in the encoding circuitry of an ADC. The Flash ADC architecture uses a Double-Base Number System(DBNS). The DBNS has been known to represent the Multidimensional Logarithmic Number System (MDLNS) used for implementing the multiplier accumulator architecture of FIR filter in Digital Signal Processing (DSP) applications. The authors use the DBNS with the base 2 and 3 in designing ADC encoder circuits, which is called as Double Base Integer Encoder(DBIE). A symmetric map is analyzed first, and then asymmetric map is followed to provide addition ready DBNS for DSP circuitry. The simulation results of the DBIE circuits in 6-bit and 8-bit ADC show the effectiveness of the Constraint algorithm with