D/A CONVERTER AND JITTER FREQUENCY CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a D/A converter that reduces effects of noise on electronic components.SOLUTION: The D/A converter includes: a sampling circuit 160 having a sample-and-hold section 150b for sampling an input signal based on a digital signal input by a digital section 150c and holding and transferring the sampled signal, and a continuous section 150a for outputting the signal transferred by the sample-and-hold section as an analog signal; a clock signal generation section 143 for generating a clock signal &phgr;1' supplied to the sample-and-hold section 150b and a clock signal &phgr;2 supplied to the continuous section 150a; a jitter generation section 141 for generating jitter added to at least the clock signal &phgr;1'; and a jitter frequency control circuit 171 for controlling the frequency of the jitter generated by the jitter generation section 141.