| 摘要 |
The digital signal processor is for correcting a DC output at an output terminal of an internal circuit of an analog circuit device. The digital signal processor includes a digital register for storing a digital value, a D/A converter for converting the digital value stored in the digital register into an analog voltage and applying the converted analog voltage to the output terminal as the DC output, a polarity determining circuit which outputs a first signal when an analog DC voltage at a reference correction point different from the output terminal in the internal circuit is higher than a predetermined threshold value and otherwise outputs a second signal, and an updating function configured to monotonously increase or decrease the digital value stored in the digital register while a predetermined one of the first and second signals is outputted from the polarity determining circuit.
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