Tuesday, April 12, 2011

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Frequency Waveform Generator Circuit By MAX038

This circuit very useful to use waveform generator in electronic experiment and design. Using this circuit you can produce sine wave oscillation. Beside sine wave oscillation, you can also produce triangle or square wave function.
Frequency Waveform Generator Circuit By  MAX038




The MAX038 is at the heart of the waveform generator circuit. complementary function is given by the IC to build a generator waveform / function generator. To build a generator circuit complete waveform, you can give some modification like change the inputs of A0 and A1 to generate the other type of wave. Put A0=X and A1=1, you will generate sine wave using this circuit. Change both A0 and A1 into 0 will produce square wave nad if you put A0=1 and A1=1, you will get triangle wave. Using current, you can control the frequency. You can control the frequency using microcontroller or digital interface if you disconnect the 20K RIN from REF (pin 1) and connect it to a DAC. By controlling the current using a phase comparator output that compares the sync output (pin 14 of MAX038) and a reference clock from quartz crystal oscillator, you can even control the chip using a quartz crystal (PLL). Since this frequency generator can generates very wide operating frequency (0.1 Hz to 20MHz), it’s become very interesting.

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