Digital-to-analog converter circuit and electronic device including same and method for controlling same

A method of controlling a digital-to-analog converter (DAC) circuit, the method comprising:

• applying a first clock signal to a pseudo random number generation circuit generating random numbers in response to edges of an applied clock signal;
• transmitting different random numbers generated in response to different edges of the first clock signal from a pseudo random number generation circuit to a first switch circuit connected to a first multiplexer and a second switch circuit connected to a second multiplexer, respectively;
• and
• generating an analog signal based on a serial code comprising codes output from the first switch circuit and the second switch circuit, wherein the first switch circuit and the second switch circuit output different random number codes in parallel based on the different random numbers.

An electronic device that transmits and receives an RF (radio frequency) signal, the electronic device comprising:

• a digital-to-analog converter (DAC) circuit configured to convert a digital signal into an analog signal;
• and
• an antenna configured to output the analog signal as the RF signal,
• wherein the DAC circuit comprises:
• a serializer circuit comprising a plurality of multiplexers and configured to convert a parallel code in digital form into a serial code using the plurality of multiplexers;
• and
• a cell array comprising a plurality of unit cells and configured to output the analog signal based on the serial code, and
• wherein the serializer circuit comprises:
• a pseudo random number generation circuit configured to generate random numbers in response to edges of a first clock signal;
• a first switch circuit connected to a first multiplexer and a second switch circuit connected to a second multiplexer;
• and
• a random number circuit configured to transmit different random numbers generated by the pseudo random number generation circuit in response to different edges of the first clock signal to the first switch circuit and the second switch circuit, respectively, and
• wherein the first switch circuit and the second switch circuit output different random number codes in parallel based on the different random numbers.