Computer Graphics & The Design of 10-bit 200MS/s CMOS Parallel Pipeline A/D Converter


The KIPS Transactions:PartA, Vol. 11, No. 2, pp. 195-202, Apr. 2004
10.3745/KIPSTA.2004.11.2.195,   PDF Download:

Abstract

This paper introduces the design of parallel pipeline high-speed analog-to-digital converter(ADC) for the high-resolution video applications which require very precise sampling. The overall architecture of the ADC consists of 4-channel parallel time-interleaved 10-bit pipeline ADC structure allowing 200MSample/s sampling speed which corresponds to 4-times improvement in sampling speed per channel. Key building blocks are composed of the front-end sample-and-hold amplifier(SHA),the dynamic comparator and the 2-stage full differential operational amplifier. The 1-bit DAC,comparator and gain-2 amplifier are used internally in each stage and they were integrated into single switched capacitor architecture allowing high speed operation as well as low power consumption. In this work,the gain of operational amplifier was enhanced significantly using negative resistance element. In the ADC,a delay line is designed for each stage using D-flip flops to align the bit signals and minimize the timing error in the conversion. The converter has the power dissipation of 280mW at 3.3V power supply. Measured performance includes DNL and INL of 0.7 / -0.6 LSB, 0.9 / -0.3 LSB.


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Cite this article
[IEEE Style]
J. G. Min, "Computer Graphics & The Design of 10-bit 200MS/s CMOS Parallel Pipeline A/D Converter," The KIPS Transactions:PartA, vol. 11, no. 2, pp. 195-202, 2004. DOI: 10.3745/KIPSTA.2004.11.2.195.

[ACM Style]
Jeong Gang Min. 2004. Computer Graphics & The Design of 10-bit 200MS/s CMOS Parallel Pipeline A/D Converter. The KIPS Transactions:PartA, 11, 2, (2004), 195-202. DOI: 10.3745/KIPSTA.2004.11.2.195.