Samsung patents circuit that adds random noise to digital-to-analog conversion
Samsung has been granted a patent for a digital-to-analog converter (DAC) circuit that uses a pseudo-random number generator to create varied signals. The design includes specific switch circuits and multiplexers that process these random numbers to help convert digital data into an analog signal.
In the filing’s own words
A digital-to-analog converter (DAC) circuit is provided. The DAC circuit includes: a serializer circuit including 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 including a plurality of unit cells and configured to output an analog signal based on the serial code. The serializer circuit includes: 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; 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.
What exactly they claim (claim 1)
1. A digital-to-analog converter (DAC) circuit comprising: 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 an 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; 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, wherein the first switch circuit and the second switch circuit output different random number codes in parallel based on the different random numbers.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Digital-to-analog converter circuit and electronic device including same and method for controlling same
- Patent number
- US12738955B2
- Application number
- 18741403
- Filed
- Jun 12, 2024
- Granted
- Sep 15, 2026
- Inventors
- 6
- Claims
- 20
Classified under
H03M 1/66 Electricity & electronicsH03K 3/84 Electricity & electronicsMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.