I need to generate a 60-70 khz sine wave (or close to sine) for a project, it's a position sensor that uses the inductance of a coil at resonant frequency.. I've thought of a number of ways of doing this, from using a PIC microcontroller, crystal oscillator and divider, 555 timer, etc.
I've tested it with a square wave and it seems to work, I'm reading the amplitude of the peaks, as that is very closely related to the position of the sensor, so amplitude stability is important.. Other than that, I'm pretty open to any design ideas. Amplitude isn't really critical, but if I had 5V P-P and run through a decoupling capacitor that would probably work OK