II-type sub-sampling phase-locked loop circuit with wide loop bandwidth
The invention discloses an II-type sub-sampling phase-locked loop circuit with a wide loop bandwidth, and relates to the technical field of integrated circuits. The circuit comprises a sub-sampling phase discriminator, a transconductance amplifier, a low-pass filter, a preset-stage ring oscillator a...
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Main Authors | , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.05.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses an II-type sub-sampling phase-locked loop circuit with a wide loop bandwidth, and relates to the technical field of integrated circuits. The circuit comprises a sub-sampling phase discriminator, a transconductance amplifier, a low-pass filter, a preset-stage ring oscillator and a slope generator which are connected in sequence, the sub-sampling phase discriminator determines an input voltage based on a high-frequency signal fed back by the circuit and transmits the input voltage to the transconductance amplifier; the transconductance amplifier is used for converting the voltage difference between the input voltage and the reference voltage into a current signal based on the amplification gain of the transconductance amplifier and outputting the current signal to the low-pass filter; the low-pass filter is used for generating ring oscillator control voltage based on the current signal and filtering high-frequency interference on the ring oscillator control voltage; the ring oscillator i |
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Bibliography: | Application Number: CN202410059443 |