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ICS8442

Part Number	ICS8442
Manufacturer	ICS
Description	CRYSTAL OSCILLATOR-TO-DIFFERENTIAL LVDS FREQUENCY SYNTHESIZER
Published	Oct 2, 2007
Detailed Description	www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS8442 700MHZ, CRYSTAL OSCILLATOR-TO-DIFFERENTIAL LVDS FREQUENCY...
Datasheet	ICS8442 PDF File

Overview

www.
DataSheet4U.
com Integrated Circuit Systems, Inc.
ICS8442 700MHZ, CRYSTAL OSCILLATOR-TO-DIFFERENTIAL LVDS FREQUENCY SYNTHESIZER FEATURES • Dual differential LVDS outputs • Selectable crystal oscillator interface or LVCMOS/LVTTL TEST_CLK • Output frequency range: 31.
25MHz to 700MHz • Crystal input frequency range: 10MHz to 25MHz • VCO range: 250MHz to 700MHz • Parallel or serial interface for programming counter and output dividers • RMS period jitter: 2.
7ps (typical) • Cycle-to-cycle jitter: 18ps (typical) • 3.
3V supply voltage • 0°C to 85°C ambient operating temperature • “Lead-Free” package available GENERAL DESCRIPTION The ICS8442 is a general purpose, dual output Crystal-to-Differential LVDS High Frequency HiPerClockS™ Synthesizer and a member of the HiPerClock S ™ family of High Performance Clock Solutions from ICS.
The ICS8442 has a selectable TEST_CLK or crystal input.
The TEST_CLK input accepts LVCMOS or LVTTL input levels and translates them to LVDS levels.
The VCO operates at a frequency range of 250MHz to 700MHz.
The VCO frequency is programmed in steps equal to the value of the input reference or crystal frequency.
The VCO and output frequency can be programmed using the serial or parallel interface to the configuration logic.
The low phase noise characteristics of the ICS8442 makes it an ideal clock source for Gigabit Ethernet and Sonet applications.
ICS BLOCK DIAGRAM VCO_SEL PIN ASSIGNMENT VCO_SEL nP_LOAD XTAL2 M4 M3 M2 M1 M0 XTAL_SEL TEST_CLK XTAL1 OSC XTAL2 0 32 31 30 29 28 27 26 25 1 M5 M6 M7 M8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TEST VDD FOUT1 nFOUT1 VDD FOUT0 nFOUT0 GND 24 23 22 XTAL1 TEST_CLK XTAL_SEL VDDA S_LOAD S_DATA S_CLOCK MR PLL PHASE DETECTOR MR ÷1 ÷2 ÷4 ÷8 N0 N1 nc FOUT0 nFOUT0 FOUT1 nFOUT1 ICS8442 21 20 19 18 17 VCO ÷M 0 1 GND S_LOAD S_DATA S_CLOCK nP_LOAD M0:M8 N0:N1 CONFIGURATION INTERFACE LOGIC TEST 32-Lead LQFP 7mm x 7mm x 1.
4mm package body Y Package Top View 8442AY www.
icst.
com/products/hiperclo...

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