ICS84427

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS84427 CRYSTAL-TO-LVDS INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER FEATURES Six LVDS outputs Crystal oscillator interface Output frequency range: 77.76MHz to 625MHz Crystal input frequency: 19.44MHz, 25MHz or 25.5MHz RMS phase jitter at 155.52MHz, using a 19.44MHz crystal (12kHz to 20MHz): 3.4ps (typical) Phase noise: Offset Noise Power 100Hz ................. -95 dBc/Hz 1kHz ............... -110 dBc/Hz 10kHz ............... -120 dBc/Hz 100kHz ............... -121 dBc/Hz 3.3V supply voltage 0°C to 70°C ambient operating temperature Industrial temperature information available upon request Available in both standard and lead-free RoHS-compliant packages GENERAL DESCRIPTION The ICS84427 is a Crystal-to-LVDS Frequency Synthesizer/Fanout Buffer and a member of the HiPerClockS™ HiPerClockS™ family of High Performance Clock Solutions from ICS. The output frequency can be programmed using the frequency select pins. The low phase noise characteristics of the ICS84427 make it an ideal clock source for 10 Gigabit Ethernet, 10 Gigabit Fibre Channel, OC3 and OC12 applications. IC S FUNCTION TABLE Inputs F_XTAL X 19.44MHz 19.44MHz 19.44MHz 19.44MHz 25MHz 25MHz 25MHz 25MHz 25.5MHz MR 1 0 0 0 0 0 0 0 0 0 F_SEL2 X 1 1 1 1 0 0 0 0 0 F_SEL1 F_SEL0 X 0 0 1 1 0 0 1 1 0 X 0 1 0 1 0 1 0 1 1 Output Frequency F_OUT LOW 77.76MHz 155.52MHz 311.04MHz 622.08MHz 78.125MHz 156.25MHz 312.5 MHz 625MHz 159.375MHz ...