An integrated wide-tunable sine oscillator
F. Doorenbosch · IEEE Journal of Solid-State Circuits · 1976
Describes a two-integrator sine oscillator which features independent control of frequency and damping and a lack of spurious responses and is integrable as a monolithic IC. The circuitry of this oscillator is discussed. The following experimental results were found: electronical, continuous tunability over four frequency decades, frequency shifting over at least one decade without amplitude deviation even with slow automatic volume control (AVC), about 1 percent distortion and an upper frequency limit of 200 kHz.