ICL8038 signal generator chip is manufactured by Intersil. It can be used to produce three types of waveforms, sine, square and triangle. The frequency, amplitude and duty cycle can be varied, and selection of waveform is done digitally. To further reduce the complexity, a 3-to-1 switch may be used in place of the digital selection circuitry. Digital selection mechanism may be used as switches available on the market are prone to dirt accumulation and poor contact quality.
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