This note describes the operational amplifier (op-amp) sine-wave oscillator, together with the criteria for oscillation to occur using RC components. It delineates the roles of phase shift and

the key to designing an oscillator is to insure that Aβ = –1 (called the Barkhausen criterion), or using complex math the equivalent expression is Aβ = 1∠–180°.

Sine wave circuits pose a significant design challenge because they represent a constantly controlled linear oscillator. Sine wave circuitry is required in a number of diverse areas, including audio

This circuit uses a quad channel op amp with ±2.5-V supplies to generate a 10kHz, low-distortion sine wave. The amplifiers buffer each RC filter stage, which yields a low-distortion output.

Easily Tuned Sine Wave Oscillators One approach to generating sine waves is to filter a square wave. This leaves only the sine wave fundamental as the output. Since a square wave is easily amplitude stabilized by clipping, the sine wave output is also amplitude stabilized. A clipping oscillator eliminates the problems encountered with

BUILD A THREE PHASE SINE WAVE GENERATOR WITH THE UAF42 By Johnnie Molina (602) 746-7592 FIGURE 1. Three Phase Quadrature Oscillator. ©1994 Burr-Brown Corporation AB-096 Printed in U.S.A. July, 1994 Figure 1 shows how a three phase sine wave oscillator can be built using one UAF42 state variable filter along with some resistors and diodes.

This circuit generates a sine wave by first generating a square wave, at the required frequency, with amplifier A1 that is configured as an astable oscillator with the frequency determined by R1 and C1.

This circuit uses a quad channel op amp with ±2.5-V supplies to generate a 10-kHz, low-distortion sine wave. The amplifiers buffer each RC filter stage, which yields a low-distortion output.

TI has a wide portfolio of clock buffers that support sine wave input for single ended, differential and configurable buffers. TI clock buffers covers all the logic levels from LVCMOS (LMK1C110x), LVDS (LMK1D1xxx), LVPECL (CDCLVP12xx), and Universal buffers that support all industry standard output and inputs formats (LMK0030x,

Please see this app note for a design you can use to build a Sine Wave Generator. I have also attached the Excel calculator referenced in the document you can use to compute passive values. You should try to select an OpAmp that have a BW 10x of …