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ICS841S012DI Datasheet(PDF) 1 Page - Integrated Device Technology |
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ICS841S012DI Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 22 page  Crystal-to-0.7V Differential HCSL/ LVCMOS Frequency Synthesizer ICS841S012DI DATA SHEET ICS841S012DKI REVISION A JULY 20, 2009 1 ©2009 Integrated Device Technology, Inc. GENERAL DESCRIPTION The ICS841S012DI is an optimized PCIe, sRIO and Gigabit Ethernet Frequency Synthesizer and a member of HiperClock s™family of high perfor- mance clock solutions from IDT. The ICS841S012DI uses a 25MHz parallel resonant crystal to generate 33.33MHz - 200MHz clock signals, replac- ing multiple oscillators and fanout buffer solutions. The device supports ±0.25% center-spread, and -0.5% down-spread clock- ing with two spread select pins (SSC[1:0]). The VCO operates at a frequency of 2GHz. The device has three output banks: Bank A with two 100MHz – 250MHz HCSL outputs; Bank B with seven 33.33MHz – 200MHz LVCMOS/ LVTTL outputs; and Bank C with one 33.33MHz – 200MHz LVCMOS/LVTTL output. All Banks A, B and C have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The low jitter character istic of the ICS841S012DI makes it an ideal clock source for PCIe, sRIO and Gigabit Ethernet applications. Designed for networking and industrial applications, the ICS841S012DI can also drive the high-speed clock inputs of communication processors, DSPs, switches and bridges. HiPerClockS™ ICS FEATURES • Two 0.7V differential HCSL outputs (Bank A), configurable for PCIe (100MHz or 250MHz) and sRIO (100MHz or 125MHz) clock signals Eight LVCMOS/LVTTL outputs (Banks B/C), 18 Ω typical output impedance Two REF_OUT LVCMOS/LVTTL clock outputs, 23 Ω typical output impedance • Selectable crystal oscillator interface, 25MHz, 18pF parallel resonant crystal or one LVCMOS/LVTTL single-ended reference clock input • Supports the following output frequencies: HCSL Bank A: 100MHz, 125MHz, 200MHz and 250MHz LVCMOS/LVTTL Bank B/C: 33.33MHz, 50MHz, 66.67MHz, 100MHz, 125MHz, 133.33MHz, 166.67MHz and 200MHz • VCO: 2GHz • Spread spectrum clock: ±0.25% center-spread (typical) and -0.6% down-spread (typical) • PLL bypass and output enable • RMS period jitter: 10ps (typical), QAx/nQAx outputs • Full 3.3V supply mode • -40°C to 85°C ambient operating temperature • Available in lead-free (RoHS 6) package PIN ASSIGNMENT 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 36 37 38 39 40 41 42 35 34 33 32 31 30 29 VDD_REFOUT REF_OUT0 REF_OUT1 GND GND REF_IN VDD VDD REF_SEL XTAL_IN XTAL_OUT BYPASS REF_OE nMR VDDOC QC GND QBC_OE VDDA VDDA VDD GND GND IREF QA0 nQA0 QA1 nQA1 48 49 50 51 52 53 54 55 56 47 46 45 44 43 ICS841S012DI 56-Lead VFQFN 8mm x 8mm x 0.925mm package body K Package Top View |
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