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Low-Distortion Sine Wave Oscillator with Precise RMS ...
https://www.analog.com/en/technical-articles/low-distortion-sine-wave-oscillator-with-precise-rms-amplitude-stability.html
The LT1632 high-speed low-distortion amplifier and its positive feedback RC network generate the oscillations. The amplitude, and amplitude stability, of the …
Ultra-Low Distortion Sinewave Oscillator
https://sound-au.com/project174.htm
Introduction. As discussed in the article ( Sinewave Generators ), although a sinewave is the simplest possible waveform, it is also one of the hardest to generate in pure form. Any impurity represents distortion, and that means added harmonics that make very low distortion measurements impossible. If an amplifier under test has a distortion of 0.01%, the oscillator …
An ultra low-distortion oscillator with THD below -140 dB
http://www.janascard.cz/PDF/An%20ultra%20low%20distortion%20oscillator%20with%20THD%20below%20-140%20dB.pdf
A low-distortion oscillator is necessary for testing today’s ADCs (analog-to-digital converters) that have resolution higher than 20 bits. Low-distortion amplifiers with THD (total-harmonic distortion) of -120 dB or less also need such an oscillator for …
Low Distortion Oscillator Performance - Analog Circuit Design
http://www.nanovolt.ch/resources/low_distortion_oscillators/pdf/low_distortion_oscillator_performance.pdf
my low distortion oscillator and the low distortion sine wave generator of the Audio Precision SYS-2722 audio analyzer. Both oscillators are measured at decadic frequencies between 10Hz and 100kHz, with amplitudes ranging from 20dBu to …
Low Distortion Signal Generator. Part 1. - renardson-audio.com
https://renardson-audio.com/gen.html
The oscillator has both sine and cosine outputs available, and if we square and add these voltages we in theory get a perfect constant voltage proportional to signal amplitude squared. (sin 2 wt + cos 2 wt = 1). Good low distortion analogue multipliers were and still are relatively expensive, but the LM13700 could be used. This is a 'dual operational transconductance' …
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