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874003AG-04LF Datasheet(PDF) 1 Page - Integrated Device Technology |
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874003AG-04LF Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 15 page  DATA SHEET ICS874003AG-04 REVISION A NOVEMBER 4, 2009 1 ©2009 Integrated Device Technology, Inc. PCI EXPRESS™ Jitter Attenuator ICS874003-04 General Description The ICS874003-04 is a high performance Differential-to-LVDS Jitter Attenuator designed for use in PCI Express systems. In some PCI Express systems, such as those found in desktop PCs, the PCI ExpressTM clocks are generated from a low bandwidth, high phase noise PLL frequency synthesizer. In these systems, a jitter attenuator may be required to attenuate high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The ICS874003-04 has a bandwidth of 6.8MHz. The 6.8MHz provides a high bandwidth that can easily track triangular spread profiles, while providing jitter attenuation. The ICS874003-04 uses IDT’s 3rd Generation FemtoClock™ PLL technology to achieve the lowest possible phase noise. The device is packaged in a 20 Lead TSSOP package, making it ideal for use in space constrained applications such as PCI Express add-in cards. Features • Three differential LVDS output pairs • One differential clock input • CLK/nCLK can accept the following differential input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL • Input frequency range: 98MHz to 128MHz • Output frequency range: 98MHz to 320MHz • VCO range: 490MHz - 640MHz • Supports PCI-Express Spread-Spectrum Clocking • High PLL bandwidth allows for better input tracking • Full 3.3V supply mode • 0°C to 70°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages F_SEL[2:0] Function Table HiPerClockS™ ICS Inputs Outputs F_SEL2 F_SEL1 F_SEL0 QA[0:1], nQA[0:1] QB, nQB0 00 0 ÷2 ÷2 10 0 ÷5 ÷2 01 0 ÷4 ÷2 11 0 ÷2 ÷4 00 1 ÷2 ÷5 10 1 ÷5 ÷4 01 1 ÷4 ÷5 11 1 ÷4 ÷4 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 F_SEL1 VDDA nc F_SEL0 MR nQA0 QA0 VDDO QA1 VDD nQA1 VDDO QB0 nQB0 F_SEL2 OEB GND nCLK CLK OEA Pin Assignment ICS874003-04 20-Lead TSSOP 6.5mm x 4.4mm x 0.925mm package body G Package Top View |
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