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Abstract
Abstract The paper describes a method of amplitude control in a sinusoidal RC-oscillator. The oscillator includes an amplifier of current with differential output and the amplitude control is achieved by insertion of a current splitter in the positive feedback path. The current splitter is realized as a bipolar transistor differential pair with control of emitter tail current splitting from an amplitude detector. The approach is suitable for design of RC-oscillators operating with a low voltage power supply (an example of the oscillator for a 3 V power supply is given).
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