557GI-05A ICST [Integrated Circuit Systems], 557GI-05A Datasheet
557GI-05A
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557GI-05A Summary of contents
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Description The ICS557-05A is a spread-spectrum clock generator that supports PCI-Express requirements used embedded systems to substantially reduce electro-magnetic interference (EMI). The device provides four differential HCSL or LVDS high-frequency outputs with spread spectrum capability. ...
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Pin Assignment 1 20 VDDXD GNDXD 9 12 IREF 10 11 20-pin (173 mil) TSSOP Spread Spectrum Selection Table ...
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Pin Descriptions Pin Pin Pin Name Type 1 VDDXD Power 2 S0 Input 3 S1 Input 4 S2 Input 5 X1 Input 6 X2 Output 7 PD Input 8 OE Input 9 GND Power 10 IREF Output 11 CLKD Output ...
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Application Information Decoupling Capacitors As with any high-performance mixed-signal IC, the ICS557-05A must be isolated from system power supply noise to perform optimally. Decoupling capacitors of 0.01µF must be connected between each VDD and the PCB ground plane. PCB Layout ...
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Output Structures IREF =2.3 mA See Output Termination Sections - Pages Ω R 475 R General PCB Layout Recommendations For optimum device performance and lowest output phase noise, the following guidelines should be observed. 1. Each 0.01µF ...
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PCI-Express Layout Guidelines Common Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace. L3 length, Route as non-coupled 50 ohm trace Differential Routing on a ...
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LVDS Compatible Layout Guidelines LVDS Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace length, Route as coupled 50 ohm differential trace. ...
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Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS557-05A. These ratings are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections ...
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AC Electrical Characteristics - CLKOUTA/CLKOUTB Unless stated otherwise, VDD=3.3 V ±5%, Ambient Temperature -40 to +85°C Parameter Symbol Input Frequency Output Frequency 1,2 Output High Voltage V OH 1,2 Output Low Voltage V OL Crossing Point 1,2 Voltage Crossing Point ...
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PCI-Express Layout Guidelines Common Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace. L3 length, Route as non-coupled 50 ohm trace Differential Routing on a ...
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Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No. 95, MO-153 20 INDEX AREA MDS 557-05A E Integrated Circuit Systems, Inc. ● (20-pin TSSOP, 173 mil Body) Symbol A ...
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... ICS557GI-05A 557GI-05A ICS557GI-05ATR 557GI-05A ICS557GI-05ALF 557GI05ALF ICS557GI-05ALFTR 557GI05ALF Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use ...