Semiconductor circuit

A semiconductor circuit comprising:

• a signal processing circuit that includes a first signal processor performing predetermined signal processing on an input signal to provide a change to at least one of the characteristic values thereof, and a second signal processor provided in the subsequent stage of the first signal processor and performing predetermined signal processing on an output signal from the first signal processor to provide a change to a characteristic value thereof, wherein an amount of change provided to the characteristic value of the signal by one of the first and second signal processors is dependent on a power supply voltage, and an amount of change provided to the characteristic value of the signal by the other of the first and second signal processors is configured to be adjustable;
• and
• a control circuit that monitors a power supply voltage supplied to said one of the first and second signal processors and adjusts in accordance with the power supply voltage the amount of change provided to the characteristic value of the signal by the said other of the first and second signal processors.