DAC using current source driving main resistor string

  

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DAC using current source driving main resistor string

Invention: DAC using current source driving main resistor string

Year    Description
2000Invention patented by Ka Y. Leung and Douglas R. Holberg on September 24th, 2000. Abstract: An digital-to-analog converter having main DAC resistor strings and sub-DAC resistor strings for converting MSB and LSB portions of a digital word into corresponding analog voltages. The main DAC resistor strings are driven by constant current sources to improve the linearity of the conversion process. The constant current sources present a high impedance to the main DAC resistor strings, thereby providing a more linear change in resistance during the conversion process, and reducing second-order harmonic nonlinearity.
Source: selected by the editor from original sources.

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