Hello .... I have an old MAX038 IC. I wanted to build a simple signal generator. One of the pins in the IC datasheet accepts +/- voltages to adjust the frequency at the output. I was wondering if anyone can give me some tips on how I can build a voltage source that has one adjustable output that can range from -2.5V to +2.5V.
I was originally thinking of using two voltage regulators with adjustable positive and negative outputs. I could then switch between the two if I wanted to adjust my frequency up or down from the nominal value, but I figured it'd be more interesting to build just one circuit that has one output that goes from negative to positive.
I appreciate schematics, but what I really want is a resource that explains to me how each part of it works and the concepts behind it. I'm still learning. Thanks!