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The AD9511 provides a multi-output clock distribution function along with an on-chip PLL core. The design emphasizes low jitter and phase noise to maximize data converter performance. Other applications with demanding phase noise and jitter requirements also benefit from this part. The PLL section consists of a programmable reference divider (R); a low noise phase frequency detector (PFD); a precision charge pump (CP); and a programmable feedback divider (N). By connecting an external VCXO or VCO to the CLK2/CLK2B pins, frequencies up to 1.6 GHz may be synchronized to the input reference. There are five independent clock outputs. Three outputs are LVPECL (1.2 GHz), and two are selectable as either LVDS (800 MHz) or CMOS (250 MHz) levels.Each output has a programmable divider that may be bypassed or set to divide by any integer up to 32. The phase of one clock output relative to another clock output may be varied by means of a divider phase select function that serves as a coarse timing adjustment. One of the LVDS/CMOS outputs features a programmable delay element with full-scale ranges up to 10 ns of delay. This fine tuning delay block has 5-bit resolution, giving 32 possible delays from which to choose for each full-scale setting. The AD9511 is ideally suited for data converter clocking applications where maximum converter performance is achieved by encode signals with subpicosecond jitter. The AD9511 is available in a 48-lead LFCSP and can be operated from a single 3.3 V supply. An external VCO, which requires an extended voltage range, can be accommodated by connecting the charge pump supply (VCP) to 5.5 V. The temperature range is ?40?C to +85?C. APPLICATIONSLow jitter, low phase noise clock distribution Clocking high speed ADCs, DACs, DDS, DDC, DUC, MxFEsHigh performance wireless transceiversHigh performance instrumentationBroadband infrastructure

The AD9571 provides a multioutput clock generator function comprising a dedicated PLL core that is optimized for Ethernet line card applications. The integer-N PLL design is based on the Analog Devices, Inc., proven portfolio of high performance, low jitter frequency synthesizers to maximize network performance. Other applications with demanding phase noise and jitter requirements also benefit from this part.The PLL section consists of a low noise phase frequency detector (PFD), a precision charge pump (CP), a low phase noise voltage controlled oscillator (VCO), and a preprogrammed feedback divider and output divider. By connecting an external crystal or reference clock to the REFCLK pin, frequencies up to 156.25 MHz can be locked to the input reference.Each output divider and feedback divider ratio is preprogrammed for the required output rates. No external loop filter components are required, thus conserving valuable design time and board space.The AD9571 is available in a 40-lead 6 mm ? 6 mm lead frame chip scale package and can be operated from a single 3.3 V supply. The operating temperature range is ?40?C to +85?C.APPLICATIONS Ethernet line cards, switches, and routers SCSI, SATA, and PCI-express PCI support included Low jitter, low phase noise clock generation

The AD9577 provides a multioutput clock generator function,along with two on-chip phase-locked loop cores, PLL1 and PLL2,optimized for network clocking applications. The PLL designsare based on the Analog Devices, Inc., proven portfolio of highperformance, low jitter frequency synthesizers to maximizenetwork performance. The PLLs have I2C programmable outputfrequencies and formats. The fractional-N PLL can supportspread spectrum clocking for reduced EMI radiated peak power.Both PLLs can support frequency margining. Other applicationswith demanding phase noise and jitter requirements can benefitfrom this part.The first integer-N PLL section (PLL1) consists of a low noise phasefrequency detector (PFD), a precision charge pump (CP), a lowphase noise voltage controlled oscillator (VCO), a programmablefeedback divider, and two independently programmable outputdividers. By connecting an external crystal or applying a referenceclock to the REFCLK pin, frequencies of up to 637.5 MHz canbe synchronized to the input reference. Each output divider andfeedback divider ratio is I2C programmed for the requiredoutput rates.A second fractional-N PLL (PLL2) with a programmable modulusallows VCO frequencies that are fractional multiples of thereference frequency to be synthesized. Each output dividerand feedback divider ratio can be programmed for the requiredoutput rates, up to 637.5 MHz. This fractional-N PLL can alsooperate in integer-N mode for the lowest jitter.Up to four differential output clock signals can be configuredas either LVPECL or LVDS signaling formats. Alternatively,the outputs can be configured for up to eight CMOS outputs.Combinations of these formats are supported. No external loopfilter components are required, thus conserving valuable designtime and board space. The AD9577 is available in a 40-lead, 6 mm ?6 mm LFCSP package and can operate from a single 3.3 V supply.The operating temperature range is ?40?C to +85?C.Applications Low jitter, low phase noise multioutput clock generator for data communications applications including Ethernet, Fibre Channel, SONET, SDH, PCI-e, SATA, PTN, OTN, ADC/DAC, and digital video Spread spectrum clocking

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