31.3: A 10‐bit CMOS Digital‐to‐Analog Converter with Logarithmic Time Interpolation

A 10-bit logarithmic time interpolation digital-to-analog converter (DAC) which consists of a 7-bit resistor string, a 7-bit two-step decoder, a 2-bit logarithmic time interpolator, and a buffer amplifier is proposed for data-driver integrated circuits of active-matrix liquid crystal display systems. It occupies 57% of the area of the conventional 10-bit resistor-string DAC. The DNL and INL of the implemented 10-bit DAC were +0.29/-0.30 and +0.47/-0.36 LSB, respectively, where 1 LSB is equal to about 4.5 mV.

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