High-performance quadrature sine wave type oscillator circuit

Many RC oscillators use the advanced circuits in the phase shift unit. They use the voltage feedback amplifier, and the gain of the voltage feedback amplifier will reduce sharply in the high frequency, and gain will stop, when it has not reached the high frequency. The difference of the voltage feedback amplifier phase characteristic is the reason. The high frequency

IC HA5025, which contains four current feedback amplifiers, is used to make the RC oscillator, thus four quadrature sine waves will be formed, as shown in the picture.

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