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843001CGI-23LFT Datasheet(PDF) 1 Page - Integrated Device Technology |
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843001CGI-23LFT Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 24 page  DATA SHEET ICS843001CGI-23 REVISION A OCTOBER 4, 2011 1 ©2011 Integrated Device Technology, Inc. FemtoClock® Crystal/LVCMOS-to- LVPECL/ LVCMOS Frequency Synthesizer ICS843001I-23 General Description The ICS843001I-23 is a highly versatile, low phase noise LVPECL/LVCMOS Synthesizer which can generate low jitter reference clocks for a variety of communication applications. The dual crystal interface allows the synthesizer to support up to three communication standards in a given application (i.e. SONET with a 19.44MHz crystal, 1Gb/10Gb Ethernet and Fibre Channel using a 25MHz crystal). The RMS phase jitter performance is typically less than 1ps, thus making the device acceptable for use in demanding applications such as OC48 SONET, GbE/10Gb Ethernet and SAN applications. The ICS843001I-23 is packaged in a small 24-pin TSSOP, E-Pad package. Features • One 3.3Vdifferential LVPECL output pair and one LVCMOS/LVTTL single-ended reference clock output • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input • Crystal and CLK range: 19.44MHz – 27MHz • Able to generate GbE/10GbE/12GbE, Fibre Channel (1Gb/4Gb/10Gb), PCI-E and SATA from a 25MHz crystal • VCO range: 1.12GHz – 1.275GHz • Supports the following applications: SONET, Ethernet, Fibre Channel, Serial ATA, and HDTV • RMS phase jitter @ 622.08MHz (12kHz - 20MHz): 0.9ps (typical), 3.3V • Supply modes VCC/VCCO 3.3V/3.3V 3.3V/2.5V 2.5V/2.5V • -40°C to 85°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) package Pin Assignment 11 10 01 00 00 01 10 11 Phase Detector VCO 000 ÷44 001 ÷45 010 ÷48 011 ÷50 100 ÷51 111 ÷64 (default) N 000 ÷2 001 ÷4 010 ÷5 011 ÷6 100 ÷8 (default) 101 ÷10 110 ÷12 111 ÷16 M 3 3 OSC OSC Q nQ REF_OUT N2:N0 M2:M0 SEL0 SEL1 XTAL_IN0 XTAL_OUT0 XTAL_IN1 XTAL_OUT1 CLK MR OE_REF Pulldown Pulldown Pullup Pulldown Pulldown Pulldown 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCCO_LVCMOS N0 N1 N2 VCCO_LVPECL Q nQ VEE VCCA VCC XTAL_OUT1 XTAL_IN1 REF_OUT VEE M2 OE_REF M0 M1 MR SEL1 SEL0 CLK XTAL_IN0 XTAL_OUT0 ICS843001I-23 24-Lead TSSOP, E-Pad 4.4mm x 7.8mm x 0.925mm package body G Package Top View Block Diagram |
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