Pierce crystal oscillator

This circuit is an op-amp based Pierce crystal oscillator designed to generate a stable 1 MHz signal. The quartz crystal (Y1) fixes the oscillation frequency, while capacitors C1 and C3 provide the necessary load for the crystal. Resistors R1, R2, and R4 set the biasing and feedback conditions required for sustained oscillation. This configuration is widely used due to its high frequency stability and simplicity.
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