Hybrid return-to-zero voltage-mode DAC driver

Abstract

A voltage-mode digital-to-analog converter (DAC) includes multiple bit processing circuits to generate an output voltage responsive to a binary input. Each of the multiple bit processing circuits includes a first switch circuit and a second switch circuit. The first switch circuit is to selectively couple one of multiple reference voltages to a first output load in response to receiving a first input bit during a first bit time. The first output load has a value proportional to d. The second switch circuit is to selectively couple one of the multiple reference voltages to a second output load in response to receiving a second input bit during a second bit time. The second output load has a value corresponding to the first output load. The first and second output loads are disposed in parallel, and serially couple to a third output load having a value proportional to (1-d).

Dependencies are inferred from the claim text.