ICS843034AY-01LF
ICS843034AY-01LF Datasheet
LVPECL FREQUENCYICS843IC0S3844-300134-01
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ICS843034AY-01LF |
ICS843034AY-01LF (pdf) |
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843034AY-01LFT |
843034AY-01LFT |
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| DATA SHEET FEMTOCLOCKICnSitrecg uriatteMd ULTI-RATE SYNTHESIZERSystems, Inc. LVPECL FREQUENCYICS843IC0S3844-300134-01 FEMTOCLOCKS MULTI-RATE LVPECL FREQUENCY SYNTHESIZER The ICS843034-01 is a general purpose, low phase noise LVPECL synthesizer which can HiPerClockS generate frequencies for a wide variety of applications. The ICS843034-01 has a 4:1 input Multiplexer from which the following inputs can be selected 1 differential input, 1 single-ended input, or one of two crystal oscillators, thus making the device ideal for frequency translation or generation. Each differential LVPECL output pair has an output divider which can be independently set so that two different frequencies can be generated. Additionally, each LVPECL output pair has a dedicated power supply pin so the outputs can run at 3.3V or 2.5V. The ICS843034-01 also supplies a buffered copy of the reference clock or crystal frequency on the single-ended REF_CLK pin which can be enabled or disabled by default . The output frequency can be programmed using either a serial or parallel programming interface. The ICS843034-01 has excellent <1ps phase jitter performance over the 637kHz - 5MHz integration range, thus making it suitable for use in Fibre Channel, SONET, and Ethernet/1Gb Ethernet applications. Example applications include systems which must support both FEC and non FEC rates. In 10Gb Fibre Channel, for example, you can use a 25.5MHz crystal to generate a 159.375MHz reference clock, and then switch to a 20.544MHz crystal to generate 164.355MHz for 66/64 FEC. Other applications could include supporting both Ethernet frequencies and SONET frequencies in an application. When Ethernet frequencies are needed, a 25MHz crystal can be used and when SONET frequencies are needed, the input MUX can be switched to select a 38.88MHz Crystal. PIN ASSIGNMENT • Dual differential 3.3V LVPECL outputs which can be set independently for either 3.3V or 2.5V • 4:1 Input Mux 1 differential input 1 single-ended input 2 crystal oscillator interfaces • CLK, nCLK pair can accept the following differential input levels LVPECL, LVDS, LVHSTL, HCSL, SSTL • TEST_CLK accepts LVCMOS or LVTTL input levels • Output frequency range 30.625MHz to 640MHz • Crystal input frequency range 12MHz to 40MHz • VCO range 490MHz to 640MHz • Parallel or serial interface for programming feedback divider and output dividers • RMS phase jitter at 106.25MHz, using a 25.5MHz crystal 637kHz to 5MHz 0.61ps typical • Supply voltage modes: LVPECL outputs core/outputs 3.3V/3.3V 3.3V/2.5V REF_CLK output core/outputs 3.3V/3.3V 3.3V/2.5V • 0°C to 70°C ambient operating temperature • Available in both standard and lead-free RoHS-compliant packages CLK nCLK nP_LOAD VCO_SEL M0 M1 M2 M3 M4 M5 M6 M7 TABLE ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature 843034AY-01 ICS843034A01 48 Lead LQFP tray 0°C to 70°C 843034AY-01T ICS843034A01 48 Lead LQFP 1000 tape & reel 0°C to 70°C 843034AY-01LF ICS43034A01L 48 Lead "Lead-Free" LQFP tray 0°C to 70°C 843034AY-01LFT ICS43034A01L 48 Lead "Lead-Free" LQFP 1000 tape & reel 0°C to 70°C NOTE Parts that are ordred with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. The aforementioned trademark, HiPerClockS and FEMTOCLOCKS is a trademark of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated ICS assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 843034AY-01 22 IDT / ICS FEMTOCLOCKS MULTI-RATE LVPECL FREQUENCY SYNTHESIZER ICS843034-01 IICCSS26138554720923-3604-3014A72-01 TTSSDD Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support 408-284-8200 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 outside U.S. Asia Pacific and Japan |
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