Patent ID: 8604959
Filing Date: 2013-12-10
Classification: H03M

Abstract:
1. A device for converting a digital input signal to an analog signal, the device comprising: 2M+1 groups of N digital-to-analog converters, DACs, per group, each group receiving the digital input signal, M being an integer greater than or equal to zero and N being an integer greater than 1, each of the N DACs in a group being electrically in parallel and having a corresponding DAC input and DAC output, each DAC being clocked by a clock that differs in phase by 1/N of a clock period that clocks a preceding DAC of the N DACs in a group; 2M+1 groups of N multipliers, one multiplier for each of the N DACs in a group, each multiplier multiplying the DAC input to a corresponding DAC by a corresponding filter coefficient; and a combiner, the combiner combining the DAC outputs to produce the analog signal.