Digital-to-analog conversion arrangement with power range dependent D/A converter selection

A digital-to-analog conversion arrangement for converting a digital input signal, the digital-to-analog conversion arrangement comprising:

• a first digital-to-analog converter configured to convert a first subset of bits of a digital input signal;
• a second digital-to-analog converter configured to convert a second subset of bits of the digital input signal, the second subset at least partially overlapping with the first subset;
• a power information provider configured to provide a digital input signal power of the digital input signal;
• and
• a comparator configured to compare the digital input signal power with a threshold and further configured to generate a comparison result with a value depending on whether the digital input signal is above or below the threshold;
• wherein the digital-to-analog conversion arrangement is configured to merge a first analog signal and a second analog signal, the first analog signal being based on a first analog output signal of the first digital-to-analog converter, and the second analog signal being based on a second analog output signal of the second digital-to-analog converter, and
• wherein the comparison result is configured to activate the first digital-to-analog converter if the digital input signal is below the threshold, and wherein the comparison result activates the second digital-to-analog converter if the digital input signal is above the threshold.

A digital-to-analog conversion arrangement for converting a digital input signal, the digital-to-analog conversion arrangement comprising:

• a first means for converting the digital input signal to an analog signal using a first subset of bits of the digital input signal;
• a second means for converting the digital input signal to an analog signal using a second subset of bits of the digital input signal;
• a means for selecting the first means for converting if the digital input signal has a power in a first power range, and for selecting the second means for converting if the digital input signal has a power in a second power range;
• and
• a means for merging a first analog signal and a second analog signal, the first analog signal being based on a first analog output signal of the first means for converting and the second analog signal being based on a second analog output signal of the second means for converting.

A method for digital-to-analog conversion of a digital input signal, the method comprising:

• determining in which of a plurality of power ranges the digital input signal currently resides;
• selecting one digital-to-analog converter from a plurality of digital-to-analog converters depending on the determined power range;
• converting the digital input signal to a first analog output signal using the selected digital-to-analog converter;
• and
• merging a first analog signal with at least one further analog signal, the first analog signal being based on the first analog output signal of the selected digital-to-analog converter and the at least one further analog signal being based on at least one further analog output signal of at least one further digital-to-analog converter of the plurality of digital-to-analog converters.

A computer readable digital storage non-transitory medium having stored thereon a computer program having a program code for performing, when running on a computer, a method for digital-to-analog conversion of a digital input signal, the method comprising:

• determining in which of a plurality of power ranges the digital input signal currently resides;
• selecting one digital-to-analog converter from a plurality of digital-to-analog converters depending on the determined power range;
• converting the digital input signal to a first analog output signal using the selected digital-to-analog converter;
• and
• merging a first analog signal with at least one further analog signal, the first analog signal being based on the first analog output signal of the selected digital-to-analog converter and the at least one further analog signal being based on at least one further analog output signal of at least one further digital-to-analog converter of the plurality of digital-to-analog converters.