Charan Meenakarn

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This paper describes the design and implementation of a ROMless sine-output direct digital frequency synthesiser by using a polynomial approximation, which provides a maximum error less than Ze-4 for phase values between 0 to XI2. The full-period sinewave is generated by using a quadrant-decode technique. This yields a very high spectral purity sinewave(More)
This paper describes the design and implementation of a single-chip digitally synthesized 0-35 MHz agile function generator. The chip comprises an integrated direct digital synthesizer (DDS) with a 10-bit onchip digital-to-analog converter (DAC) using an n-well single-poly triple-metal 0.5-μm CMOS technology. The main features of the chip include maximum(More)
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