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This paper describes a 6-bit full-swing CMOS current-steering digital-to-analog converter (D/A converter, DAC). Conventionally, current-steering DAC does not have a full swing analog signal, because they have an inevitable voltage drop with the output current cell. To overcome the drawbacks, a new scheme of adaptive output current cell composed of both nMOS and pMOS is proposed. Using a pMOS current...
In this paper, a low-noise CMOS Image Sensor (CIS) based on a 14-bit Two-Step Single-Slope ADC (TS SS ADC) and a column self-calibration technique is proposed. The TS SS ADC is good for the video system which requires fast operation because its conversion speed is faster than the Single Slope ADC (SS ADC) by more than 10 times. However, there are a lot of errors in the circuit operation on the connection...
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