Abstract
This paper design and produce a phase-locked loop allows stable imaging of scanning micromirror circuit. Successfully demonstrated the use of phase-locked loop output via high-voltage amplifier to drive scanning micromirror and sensed that micromirror of the resonance frequency. The measured results show that the phase-locked loop has locked in a certain bandwidths and this feature will be available in different environments or process error, the images will stable. That a phase-locked loop mentioned above have certain bandwidths can be locked, voltage operation at 5V, current of 2.56mA and a phase-locked loop bandwidth is 42.5-46.5KHz. This chip area size is 2x2 mm2. Fast scan axis scanning micromirror its resonant frequency of 45.6KHz. PLL that analog and digital design as the research framework, mainly by the phase detector (Phase Detector), voltage-controlled oscillator (VCO), divider (÷ N) and the low pass filter formed. Keywords: phase-locked loop, scanning micromirror