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ICS84427CMLFT Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS84427CMLFT Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 13 page 84427CM www.icst.com/products/hiperclocks.html REV. D NOVEMBER 30, 2005 1 Integrated Circuit Systems, Inc. ICS84427 CRYSTAL-TO-LVDS INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER PRELIMINARY GENERAL DESCRIPTION The ICS84427 is a Crystal-to-LVDS Frequency Synthesizer/Fanout Buffer and a member of the 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. BLOCK DIAGRAM PIN ASSIGNMENT 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 HiPerClockS™ ICS Q0:Q5 ICS84427 24-Lead, 300-MIL SOIC 7.5mm x 15.33mm x 2.3mm body package M Package Top View Q0 nQ0 Q1 nQ1 Q2 nQ2 Q3 nQ3 Q4 nQ4 Q5 nQ5 1 2 3 4 5 6 7 8 9 10 11 12 VDD F_SEL0 F_SEL1 MR XTAL_IN XTAL_OUT F_SEL2 VDDA VDD PLL_SEL GND VDD PLL 6/ Feedback Divider OSC 6/ Output Divider 0 1 XTAL_IN XTAL_OUT F_SEL2 PLL_SEL MR F_SEL0 nQ0:nQ5 24 23 22 21 20 19 18 17 16 15 14 13 F_SEL1 FUNCTION TABLE s t u p n I t u p t u O y c n e u q e r F L A T X _ FR M2 L E S _ F1 L E S _ F0 L E S _ FT U O _ F X1 X X X W O L z H M 4 4 . 9 10 1 0 0 z H M 6 7 . 7 7 z H M 4 4 . 9 10 1 0 1 z H M 2 5 . 5 5 1 z H M 4 4 . 9 10 1 1 0 z H M 4 0 . 1 1 3 z H M 4 4 . 9 10 1 1 1 z H M 8 0 . 2 2 6 z H M 5 20 0 0 0 z H M 5 2 1 . 8 7 z H M 5 20 0 0 1 z H M 5 2 . 6 5 1 z H M 5 20 0 1 0 z H M 5 . 2 1 3 z H M 5 20 0 1 1 z H M 5 2 6 z H M 5 . 5 20 0 0 1 z H M 5 7 3 . 9 5 1 The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice. |
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