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ICS844051CGILF Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS844051CGILF Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 11 page 844051CGI www.icst.com/products/hiperclocks.html REV. A NOVEMBER 23, 2005 1 Integrated Circuit Systems, Inc. ICS844051I FEMTOCLOCKS™ CRYSTAL-TO- LVDS CLOCK GENERATOR PRELIMINARY GENERAL DESCRIPTION The ICS844051I is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM family of high performance devices from ICS. The ICS844051I can synthesize 10 Gigabit Ethernet, SONET, or Serial ATA reference clock frequencies with the appropriate choice of crystal and output divider. The ICS844051I has excellent phase jitter perfor- mance and is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. FEATURES • One Differential LVDS output • Crystal oscillator interface designed for 18pF parallel resonant crystals (18.125MHz - 23.4375MHz) • Output frequency range: 145MHz - 187.5MHz and 72.5MHz - 93.75MHz • VCO range: 580MHz - 750MHz • RMS phase jitter @156.25MHz (1.875MHz - 20MHz): 0.45ps (typical) • 3.3V or 2.5V operating supply • -40°C to 85°C ambient operating temperature • Available in both standard and lead-free RoHS-compliant packages HiPerClockS™ ICS ICS844051I 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View VDDA GND XTAL_OUT XTAL_IN 1 2 3 4 VDD Q nQ FREQ_SEL 8 7 6 5 BLOCK DIAGRAM OSC Phase Detector VCO 0 ÷4 (default) 1 ÷8 ÷32 (fixed) XTAL_IN XTAL_OUT Q nQ FREQUENCY TABLE PIN ASSIGNMENT FREQ_SEL s t u p n I y c n e u q e r F t u p t u O ) z H M ( ) z H M ( y c n e u q e r F l a t s y r CL E S _ Q E R F 1 0 6 1 4 1 . 0 20 2 1 8 2 3 1 . 1 6 1 1 0 6 1 4 1 . 0 21 6 0 4 6 6 5 . 0 8 5 2 1 3 5 . 9 10 5 2 . 6 5 1 5 2 1 3 5 . 9 11 5 2 1 . 8 7 4 4 . 9 10 2 5 . 5 5 1 4 4 . 9 11 6 7 . 7 7 5 7 . 8 10 0 5 1 5 7 . 8 11 5 7 Pulldown 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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