ICS3726-12

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 of the ICS3726-12 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.

This part of the ICS3726-12 is ideal for Set-Top Box, multimedia clock synthesizers and ADSL/VDSL applications. The frequency of the on-chip VCXO is adjusted by an external control voltage input into pin VIN. Because VIN is a high-impedance input, it can be driven directly from an PWM RC integrator circuit. Frequency output increases with VIN voltage input. The usable range of VIN is 0 to VDD.