Compact 64.3 KB PDF application note for the XR2206 function generator chip from Exar. It is intended as a practical reference for how the IC is wired in a working oscillator: timing components that set frequency, waveform symmetry and distortion trimming, and output amplitude control. When an old function generator or audio test box produces a distorted or missing waveform, this kind of note helps trace the signal path, confirm the supply arrangement and identify which external resistors or capacitors to measure first.
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