| 摘要 |
A monotonic digital-to-analog converter (DAC) for converting a digital input signal into an analog output signal comprises: an input node for receiving the digital input signal having at least M+L bits, an output node for delivering the analog output signal corresponding to the received digital input signal, a coarse conversion block comprising current sources and first switching means for converting M more significant bits of the digital input signal into a coarse block output current, a fine conversion block comprising a current divider and second switching means for converting L less significant bits of the digital input signal into a corresponding current value, the fine conversion block having means for receiving current from a first unselected current source of the coarse conversion block, and a first cascode means for active cascoding the coarse block output current, a second cascode means, for active cascoding the current from the first unselected current source. A method for converting a digital input signal into an analog output signal is also provided.
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