| 摘要 |
PROBLEM TO BE SOLVED: To cancel power supply noise.SOLUTION: In an embodiment, a power supply noise cancellation circuit includes a generator, a first multiplier, a subtractor, and a digital to analog converter. The generator generates a sinusoidal wave signal. The first multiplier generates a first digital product signal by multiplying a digital input signal by the sinusoidal wave signal. The subtractor generates a digital difference signal by subtracting the first digital product signal from the digital input signal. The digital to analog converter obtains an analog output signal by performing digital to analog conversion for the digital difference signal. |
