ICS3726-12

www.DataSheet4U.com PRELIMINARY INFORMATION ICS3726-12 HIGH PERFORMANCE VCXO Description 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. This part 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. Features Packaged in 8-pin SOIC Operational frequency range of 20 MHz to 52 MHz Uses an inexpensive external crystal On-chip patented VCXO with pull range of 400 ppm VCXO tuning voltage of 0 to VDD Operating voltage of 3.3 V 12 mA output drive capability at TTL levels Works with surface mount crystal with CL=10 pF Advanced, low-power, sub-micron CMOS process Available in Pb (lead) free package Block Diagram VDD VIN X1 20 to 52 MHz Pullable Crystal X2 Voltage Controlled Crystal Oscillator 20 to 52 MHz Clock (R...