ICS44002I-01

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS844002I-01 FEMTOCLOCKS™ CRYSTAL-TOLVDS FREQUENCY SYNTHESIZER FEATURES Two LVDS outputs Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input Supports the following output frequencies: 156.25MHz, 125MHz, 62.5MHz VCO range: 560MHz - 680MHz RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.41ps (typical) Full 2.5V supply mode -40°C to 85°C ambient operating temperature Available in both, standard and RoHS/Lead-Free compliant packages GENERAL DESCRIPTION The ICS844002I-01 is a 2 output LVDS Synthesizer optimized to generate Ethernet HiPerClockS™ reference clock frequencies and is a member of the HiPerClocks T M family of high performance clock solutions from ICS. Using a 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL[1:0]): 156.25MHz, 125MHz and 62.5MHz. The ICS844002I-01 uses ICS’ 3 rd generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Ethernet jitter requirements. The ICS844002I-01 is packaged in a small 20-pin TSSOP package. IC S FREQUENCY SELECT FUNCTION TABLE F_SEL1 F_SEL0 0 0 1 1 0 1 0 1 M Divider Value 25 25 25 Not Used N Divider Value 4 5 10 Output Frequency (MHz) (25MHz Reference) 156.25 125 62.5 Not Used PIN ASSIGNMENT nc VDDO Q0 nQ0 MR nPLL_SEL nc VDDA F_SEL0 VDD 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDDO ...