Browse digikeys inventory of clock generators301mhz to 999mhz. Cdcm9102 lownoise twochannel 100mhz clock generator. Why the hcsl is being used in pcie reference clock instead. To optimize performance, pci express gen12345 clock generators support programmable drive strength, risefall times and output impedance, as well as down spread spectrum clock generation. The device selects between two independent referenceinputs to a phaselocked loop and generates up to four different frequencies on configurabledifferential output channels and also a copy of the reference clock on a lvcmos outputchannel. Pcie reference clock logic level electrical engineering. Hcsl compatible clock generator for pci express author. Buy si5332hdgm1 with extended same day shipping times. The si5330c utilizes our advanced cmos technology to fanout 4 clocks from 5 to 250 mhz with guaranteed low additive jitter, low skew and low propagation delay variability. Overview the zl30282 is a highperformance pcie gen 14 clock generator. Features, specifications, alternative product, product training modules, and datasheets are all available. These devices accept a 25 mhz fundamental mode parallel resonant crystal or a 25 mhz singleended reference clock signal and generate differential hcsl lvds outputs. Hcsl clock oscillator manufacturers, crystals, qpl devices.
Start designing with the 4pll high performance clock generator today. The device accepts a 25 mhz fundamental mode parallel resonant crystal and generates a differential hcsl output at 25 mhz, 100 mhz, 125 mhz or 200 mhz. Clock 0 and clock 1 have no phase skew relationship requirements meaning. Clock buffer fanout buffer, clock divider and clock multiplexer portfolio includes devices with up to 27 outputs. Buy cdcm6208v2rgzt, clock generator cml, cmos, ecl cml, hcsl, lvcmos, lvds, lvpecl 2input, 48pin qfn cdcm6208v2rgzt or other clock drivers online from rs for next day delivery on your order plus great service and a great price from the largest electronics components.
The 50ohm resistors to ground on the driver side of the ac capacitors are a requirement for the clock driver. A new programmable clock ic from on semiconductor june 30, 2017 by robert keim clockgenerator ics such as the nb3h731g offer various features that are beneficial for your digital and mixedsignal designs. Pcie hcsl frequency generators maxim 100mhz hcsl clock oscillator, ds4100 on semiconductor differential input clock 1 to 10 hcsl fanout buffer. Clocks are used in nearly every automated system where measurement, communication and interactions are required. Since hcsl is only used as a clock by the pcie backplane im assuming that the resistors would be on the far end of the clock line where the driver was impliemented. Adi clock products are ideal for clocking high performance analogtodigital converters adcs and digitaltoanalog converters dacs. Pcie gen 2 networking clock generator diodes incorporated. Jan 14, 2015 understanding clock management design. Looks like you have a hcsl output version there and it wont be happy without its termination resistors. Nb3n108kmng nb3n108kmng, clock generator hcsl hcsl.
Our kit include the necessary design files, documentation, and software to get you up and running quickly. These devices accept a 25 mhz fundamental mode parallel resonant crystal or a 25 mhz singleended reference clock signal and generate differential hcsllvds outputs. Buy si5338nbgm with extended same day shipping times. The timing commander software allows users to zoom in and out of a.
Cdci6214rget pcie gen4 support ultralow power clock. The cy27410 is a standardperformance programmable clock generator with four independent fractional plls. Evaluation board, dual hcsl clock generator, nb3n5573. Dsc55703, 2 output pcie mems hcsl crystalless clock generator. The device takes 25 mhz crystal or clock input and provides two pairs of differential outputs at 25 mhz, 100 mhz, 125 mhz, or 200 mhz for hcsl. Nb3n106kmng nb3n106kmng, clock generator hcsl hcsl, lvds. Nb3n108kmng nb3n108kmng, clock generator hcsl hcsl, lvds. Mems oscillator, tcxos, timing, ocxo, sitime, silicon. Nb3n51034 crystal to quad hcsllvds clock generator. Why the hcsl is being used in pcie reference clock instead of.
Sitime is the leader in mems timing solutions, having shipped over one billion units. It was a requirement for my design to operate without the need to communicate the clock generator. Analog devices offers ultralow jitter clock distribution and clock generation products for wireless infrastructure, instrumentation, broadband, ate, and other applications demanding sub picosecond performance. We offer evaluation kit to make it easy to evaluate our devices. Integrated circuits ics clocktiming clock generators, plls, frequency synthesizers are in stock at digikey. The device selects between two independent referenceinputs to a phaselocked loop and generates up to four different frequencies on configurabledifferential output channels and also a copy of the reference clock on a. The miclocksynth zl30262 highperformance, anyrate multiplier and clock generator device simplifies board design by generating ultralowjitter clock signals from a single crystal or crystal oscillator while generating additional independent frequency families. The 5p49v6975 is intended for highperformance consumer, networking, industrial, computing, and datacommunications applications. Differential outputs such as lvpecl, lvds, hcsl, cml, hstl, as well as selectable outputs, are supported for output frequencies up to 3.
The ad9545 provides highprecision, multioutput clock generator functions, along with two onchip jitter cleaning digital pll cores. Buy nb3n106kmng, clock generator hcsl hcsl, lvds, 24pin qfn nb3n106kmng. The si5332 clock generator offers the industrys highest level of timing integration, enabling complete clock tree consolidation in 1025100g data center, communications, industrial, and broadcast video applications, said james wilson, general manager of timing products at silicon labs, in a statement. Learn more about our products, company, and industry as well as mems and silicon oscillators, tcxos, oxco, resonators, clock generators and much more. It combines an atcut crystal, an oscillator, and a lownoise pll in a 5mm by 3.
Cdci6214 ultralow power clock generator with pcie support, four programmable. Why the hcsl is being used in pcie reference clock instead of lvds. Cdcm6208v2rgzt, clock generator cml, cmos, ecl cml, hcsl. The nb3n51044 is a precision, low phase noise clock generator that supports pci express and srio clock requirements. The device uses a 25mhz parallel crystal to generate 100mhz and 125mhz clock signals, replacing solutions requiring multiple oscillator and fanout buffer solutions. The miclocksynth zl30265 highperformance, anyrate multiplier and clock generator simplifies board design by generating ultralowjitter clock signals from a single crystal or crystal oscillator while generating additional independent frequency families.
From a 25mhz crystal or cmos input these devices generate 100 mhz in four preprogrammed output configurations immediately on powerup to 6 differential outputs. For simplified evaluation of the si5330343538 anyfrequency, anyoutput quad clock generators and buffers, development kits are available. Pl60203x offers dbc at 10khz offset at 100mhz, with a very low jitter 2ps tie rms, making it ideal for hcsl applications requiring small size. Buy cdcm6208v2rgzt, clock generator cml, cmos, ecl cml, hcsl, lvcmos, lvds, lvpecl 2input, 48pin qfn cdcm6208v2rgzt. The 841654i is an optimized pcie and srio clock generator and member of the family of. Buy renesas electronics 9fgv1004b201nbgi in avnet americas. Home technical documents datasheets cy27410, 4pll spreadspectrum clock generator cy27410, 4pll spreadspectrum clock generator cypress semiconductor cy27410, 4pll.
Typical rms jitter of 386 fs for 100mhz hcsl output enhances. You cant simply hook up one of the differential hcsl outputs to a high impedance oscilloscope probe and expect anything useful to come out. Clocktiming clock generators, plls, frequency synthesizers. Cdcdb2000 db2000qlcompliant 20output clock buffer for pcie. Overview todays modern systems often require the generation and distribution of several clock frequencies to multiple loads. This device takes a 25 mhz fundamental mode parallel resonant crystal and generates 4 differential hcsllvds outputs at 100 mhz or 200 mhz see figure 6 for lvds interface. Nb3n108kmnr4g nb3n108kmnr4g, clock generator hcsl hcsl, 32. Vddo options provide integrated level translation, supporting lvpecllvdshcsllvcmos clock generation up. Cdcdb2000 db2000qlcompliant 20output clock buffer for.
The cdci6214device is an ultralow power clock generator. The new pi6c49005 is a high performance clock generator intended for all kinds of embedded applications, which include. Both output pins are significant its the difference in voltage between them that constitutes the clock signal. The pl602041 is a member of the clockworks family of devices from micrel and provides an extremely lownoise timing solution for pci express clock signals.
Resolved c6678 hcsl clock termination processors forum. Cdcm6208v2rgzt, clock generator cml, cmos, ecl cml. Buy nb3n108kmng, clock generator hcsl hcsl, lvds, 32pin qfn nb3n108kmng or other clock drivers online from rs for next day delivery on your order plus great service and a great price from the largest electronics components. Microsemis family of synthesis devices help lower bill of material costs, reduce board space requirements, simplify design complexity and improve performance reliability by replacing multiple external components traditionally used to time processors, memory chips, phy. The 841654i is an optimized pcie and srio clock generator and member of the family of highperformance clock solutions from idt. The devices support the standard pcie hcsl signaling format and can be externally terminated to support lvpecl, lvds or cml levels. The si5338 clock generator can synthesize any combination of up to 4 differential clock outputs, each of which is independently programmable to any frequency up to 350 mhz and select frequencies to 710 mhz. Nb3n106kmng nb3n106kmng, clock generator hcsl hcsl. I have a pcie reference clock generator chip, asvmphc100. Add to compare the actual product may differ from image shown. Adi clock products are ideal for clocking high performance analogtodigital converters.
Looking at them in isolation is not very helpful here. Allinone chip replaces clocks, oscillators, buffers, and. The nb3n510x series from on semiconductor is a family of precision, lowphase noise clock generators that supports pci express and srio clock requirements. Hcsl clock oscillator are used with the pcie spec and fbdimm specification. The reference clock can come from one of the two redundant clock inputs. The miclocksynth zl30262 highperformance, anyrate multiplier and clock generator device simplifies board design by generating ultralowjitter clock signals from a single crystal or crystal oscillator while. Pll0 and pll1 are optimized for high performance synchronous clocking. Clock generators synthesizer for nearly every application, including general purpose synthesizers, applicationspecific clocks, pcie clocks and highly integrated, multiple output clocks are offered by diodes incorporated. For some pcie applications that require hcsl clock signal format, i recommend the following ti clock fanoutdistribution device which have low additive jitter, pinconfigurable output signal format, and selectable universal inputs.
Buy nb3n108kmnr4g, clock generator hcsl hcsl, 32pin qfn nb3n108kmnr4g or other clock drivers online from rs for next day delivery on your order plus great service and a great price from the largest electronics components. Clock generator for broadcom processor 8v49n231nlgi. This high performance device is optimized to generate the. For idt clock fanout buffer 621nilft, where do we connect its exposed pad. Nb3n5573dtgevb evaluation board, dual hcsl clock generator. The clock generator offers ultra lowjitter, lowskew clock outputs. The ad9545 evaluation board is a compact, easytouse platform for evaluating all features of the ad9545 dual digital pll and 1 pps synchronizer. Cdcm6208v2rgzt cdcm6208v2rgzt, clock generator cml. This high performance device is optimized to generate the processor core reference clock, the pciexpress, srio, xaui, serdes reference clocks and the clocks for both the gigabit ethernet mac and phy. The 841608i is an optimized pcie and srio clock generator and member of the family of highperformance clock solutions from idt.
Design of all aspects of the cdcm61004 is quite involved and software support is. Output disable in hardware control mode, internal pulldown. Clock management for an electronic system involves understanding and optimising the design to meet all of the accuracy requirements throughout the system. View datasheets, stock and pricing, or find other clock generator and synthesizer. Must not be connected to gnd 5 gnd power connect to ground 6 ss1 input spread select 1. Ecliptek corporation smd mems hcsl oscillator idt pcie clock source, differential io clock synthesizers. The si5330c features minimal crosstalk and provides superior supply noise rejection, simplifying lowjitter clock distribution in noisy environments. Clock generators texas instruments 301mhz to 999mhz. Idt clock generation products produce timing signals for use in synchronizing a systems. Silicon labs hcsl clock buffers are lowjitter nonpll based fanout buffers with bestinclass performance, minimal crosstalk, and superior supply noise.
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