Sine wave generating circuit

摘要: There is disclosed a sine wave generating circuit including counter (11) for counting clocks (CLK) to provide count results (B0 B4), control timing (12) converting the B4) into switching signals (D0 D10), synchronous (13) adjusting of D10) (Q0 Q10), weighted resistor voltage-dividing (14) potentials V D2 and S2 by means resistors transmit divided sequentially low pass filter (15) in accordance with Q10) given from (13), formed switched capacitor having transmission zero point which frequency (fCLK) clock (CLK). Since are set such that values wave, has high accuracy distortion factor. characteristics variable depending on frequency, good effects suppressing high-frequency components achieved.