论文信息 - Novel self-calibrated high-speed D/A converter using trimmable current sources

Novel self-calibrated high-speed D/A converter using trimmable current sources

In this paper, a high-speed 14-bit D/A converter based on. Binary weighted current sources is presented. A full-scale output current of 10-20 mA allows 50/spl Omega/ loads to be driven directly. Matching of small MOSFETs at the low LSB current level allows-only 5-bits accuracy. However, 14-bit accuracy is achieved by the novel architecture which uses digitally-controlled trimmable current sources and one of two self-calibration schemes to automatically adjust the current sources after power-up or when triggered by an external signal.<<ETX>>

Christofer Toumazou | Andrew T. K. Tang

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