Self-calibration for high-speed, high-resolution D/A converters

This paper proposes the use of digitally-controlled trimmable current sources and self-calibration to obtain a high-speed, high-resolution CMOS D/A converter. An accuracy of 14-bits has been targeted, and simulation results have shown a 15ns settling time to 0.5LSB. A full-scale output current of 10-20 mA allows 50 Omega loads to be driven directly. The DAC can be fabricated using a standard digital CMOS process; no special analogue options are required.<
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