The ICS3726-12 is a low cost, low-jitter, high-performance 3.3 volt VCXO designed to replace expensive discrete VCXOs modules. The ICS3726-12 offers a wider operating frequency range and improved power supply noise rejection. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3.3 V input voltage. Using ICS' patented VCXO techniques, the device uses an inexpensive external pullable crystal in the range of 20 to 52 MHz to produce a VCXO output clock at that same frequency.