The M2 series (D110) Voltage Controlled Oscillators (VCO) directly oscillate in the frequency range of 4 to 30 MHz. The M2 series VCO use a piezoelectric single crystal with high electromechanical coupling coefficient (LiTaO3: lithium tantalate) for stable and wide variable frequency width. Excellent S/N and jitter characteristic due to high Q of lithium tantalate can realize high quality playback sound and picture, especially in PLL circuit of digital audio and video equipments.