The frequency-temperature characteristic of the reference clocks used in ultra-compact cellular base stations for home is required to reach a high accuracy of ±0.1×10^-6. Besides, the stability of the network infrastructure needs to achieve ±4.6×10^-6/20 years. Taitien’s VCTCXO compensates for the influence of temperature changes on the output frequency of the crystal resonator through a built-in temperature compensation circuit and compensation algorithm. The temperature stability can achieve 0.1 ppm. The short-term stability can reach 5E-10/s (under stable temperature with no EMI/EMC or other interference, tested after 10 minutes of power-on). The product offers excellent performance, low power consumption and meets the requirements of a stratum 3 clock. Commonly used frequencies include 10 MHz, 12.8 MHz, 19.2 MHz, 20 MHz, 25 MHz, 26 MHz, 38.88 MHz, 40 MHz and etc.