ICS844003I-01

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS844003I-01 FEMTOCLOCKS™CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER FEATURES Three LVDS outputs on two banks, A Bank with one LVDS pair and B Bank with 2 LVDS output pairs Using a 19.53125MHz or 25MHz crystal, the two output banks can be independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input VCO range: 490MHz to 680MHz RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz): 0.56ps (typical) 3.3V output supply mode -40°C to 85°C ambient operating temperature GENERAL DESCRIPTION The ICS844003I-01 is a 3 differential output LVDS Synthesizer designed to generate Ethernet referHiPerClockS™ ence clock frequencies and is a member of the HiPerClocks™ family of high performance clock solutions from ICS. Using a 19.53125MHz or 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (DIV_SEL[A1:A0], DIV_SEL[B1:B0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz. The 844003I-01 has 2 output banks, Bank A with 1 differential LVDS output pair and Bank B with 2 differential LVDS output pairs. ICS The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The ICS844003I-01 uses ICS’ 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet...