Electronic system with current-steering digital-to-analog converter using conversion cells capable of glitch elimination and skew alignment

Abstract

An electronic system with a current-steering digital-to-analog converter using conversion cells capable of glitch elimination and skew alignment is shown. In a conversion cell, a differential switch pair is controlled by an input signal and an inverted input signal, to couple a current source to a positive output terminal and a negative output terminal of a differential analog output port. A cascode pair is coupled between the differential switch pair and the differential analog output port. A glitch elimination pair is controlled by the input signal and the inverted input signal to eliminate glitches at the differential analog output port. The glitch elimination pair is coupled to the differential analog output port without passing through the cascode pair. At the differential analog output port, the parasitic capacitance due to the glitch elimination pair is relatively small. The glitch elimination performance is thereby improved.

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