Using circuits from Analog Devices, this circuit does not need a symmetrical power supply. It is also offset adjustable and is based on the LT1498 and LT1167 op amps.
In the figure we have a current source whose intensity is given by the formula next to the...
Twin- T oscillators can be used to produce sinusoidal signals in the audio track with good...
We found this circuit in 2005 Linear Technology documentation. The integrated circuit is LT1787...