High precision output single-chip microcomputer phase-locked loop rapid frequency source

Abstract

The invention discloses a high precision output single-chip microcomputer phase-locked loop rapid frequency source. The high precision output single-chip microcomputer phase-locked loop rapid frequency source is characterized by comprising a switch power source which is fixedly mounted on a phase-locked loop and a single-chip microcomputer and is used for supplying power for the phase-locked loop and the single-chip microcomputer, wherein the phase-locked loop and the single-chip microcomputer are substantially connected, the phase-locked loop comprises a phase discriminator, a loop filter, a voltage control oscillator VCO and an N frequency divider which are sequentially connected to form a loop. Precise output of radiofrequency signals is realized through the rapid frequency source controlled by the phase-locked loop, feedback signals are reliably transmitted through three buses, intelligent frequency locking for maintenance work is realized, and online work, high output frequency, good inhibition performance and good product stability are all realized.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a high-precision output single-chip phase-locked loop fast frequency source. Background technique [0002] At present, with the development of digital technology and the widespread application of microcontrollers in electronic systems, the traditional design methods have been changed to a large extent, and the application of single-chip phase-locked loop technology has become increasingly widespread. The fast frequency source of the single-chip microcomputer phase-locked loop is applied to the communication equipment, which makes the selection of the working frequency extremely simple and accurate. And with the rapid development of large-scale integrated circuit (LSI) technology and single-chip microcomputer technology, it has greatly promoted the improvement of the integration degree of the fast frequency source of the single-chip phase-locked loop and the reduction of the v...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional single-chip phase-locked loop fast frequency source related scheme is not perfect enough, and its accuracy and product stability need to be improved

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