Byungjoon Song, Hwi-Cheol Kim, Youngdon Choi, Wonchan Kim
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A 50% power reduction scheme for CMOS relaxation oscillator
In this paper, a CMOS relaxation oscillator is presented. The proposed oscillator has only one tail current source unlike the emitter coupled multivibrator. All the tail current flows through the timing capacitor and thus the charging slope of the timing capacitor is doubled. This enhances the operating speed without increasing the power consumption. The oscillator is fabricated in a standard 0.8 /spl mu/m CMOS process. The maximum operating frequency is 923 MHz at a 3.3 V single supply, while the oscillator draws 6 mA.