A methodology for sinusoidal oscillator design to adjust for amplifier slew rate and bandwidth limitations

This work develops a methodology to position the oscillation frequency close to the maximum usable bandwidth of an operational amplifier. A practical example using the LF351 operational amplifier with an f/sub T/=4 MHz illustrates the methodology. A sinusoidal 440 kHz oscillator with a 1 V/sub p-p/ amplitude produced a total harmonic distortion of 1.33% and a phase noise of -65 dBc at 1 kHz offset.