Digital analog converter

摘要

Embodiments of a digital-to-analog conversion system that utilizes a specialized clock signal to reshape an analog impulse response of a digital-to-analog converter (DAC) are disclosed. Preferably, a shape of the specialized clock signal is such that Nyquist images resulting from digital-to-analog conversion are controlled in a desired manner. In one embodiment, the digital-to-analog conversion system includes a DAC that converts a digital input signal into an analog output signal. A specialized clock signal is applied to the analog output signal of the DAC such that an analog impulse response of the DAC is reshaped according to a shape of the specialized clock signal, thereby providing a modified analog output signal. The specialized clock signal reshapes the analog impulse response of the DAC such that Nyquist images resulting from digital-to-analog conversion are controlled in a desired manner.

主权项

1. A method of operation of a system, comprising:
converting a digital input signal into an analog output signal via a digital-to-analog converter;and applying a specialized clock signal to the analog output signal to provide a modified analog output signal; wherein applying the specialized clock signal to the analog output signal reshapes an analog impulse response of the digital-to-analog converter such that one or more Nyquist images of the digital input signal that result from digital-to-analog conversion of the digital input signal by the digital-to-analog converter are controlled in a desired manner.