Ultrahigh-speed burst mode clock restoring circuit based on gate-control oscillator
A technology of burst mode and clock recovery, applied in the direction of electrical components, automatic power control, etc., can solve the problems of excessive use, poor clock phase noise characteristics, etc., and achieve the effect of low power consumption, high speed, and low cost
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[0037] The invention provides an ultra-high-speed burst mode clock recovery technology and circuit.
[0038] Describe the present invention in detail below in conjunction with accompanying drawing, the improved high-speed burst clock recovery circuit such as image 3As shown, it includes: gated oscillator X1, 4 frequency divider X2, frequency discriminator X3, charge pump X4, low-pass filter X5, internal clock buffer X6 and half-rate data recovery circuit X7. and figure 2 Compared with the clock recovery circuit of the gated oscillator method shown, the circuit of the present invention only contains a gated oscillator X1 based on XOR / XOR gates. The improved gated oscillator X1 has no transition between stop and oscillation state, and the oscillation frequency is half of the data rate, that is, 5GHz, which makes the improved oscillator more suitable for high-speed digital signal transmission; the improved gated oscillator Device X1, 4 frequency divider X2, frequency discrimin...
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