Abstract
Sawtooth wave generator which has very steep down-slope and little amplitude and oscillation frequency error, is proposed. Because the down-slope is achieved by switching two triangular waves exclusively, the shape of the down-slope becomes very steep. The proposed method realizes not only the steep down-slope but also less amplitude error and less oscillation frequency error compared with conventional method. Spectre simulations are performed by using 0.18µm CMOS process and transient simulation results show the proposed circuit has quite less amplitude and frequency error for 5MHz oscillation compared with the conventional method.
