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AD9578

Part Number	AD9578
Manufacturer	Analog Devices
Description	Dual PLL Precision Synthesizer
Published	Jan 5, 2017
Detailed Description	Data Sheet Dual PLL Precision Synthesizer AD9578 FEATURES Any output frequency precision synthesis 11.8 MHz to 919 MHz...
Datasheet	AD9578 PDF File

Overview

Data Sheet Dual PLL Precision Synthesizer AD9578 FEATURES Any output frequency precision synthesis 11.
8 MHz to 919 MHz Better than 0.
1 ppb frequency resolution Ultralow rms jitter (12 kHz to 20 MHz) <300 fs rms using integer synthesis <405 fs rms using fractional synthesis Dual reference inputs support LVPECL, LVDS, 1.
8 V LVCMOS, or fundamental mode AT cut crystals from 22 MHz to 54 MHz or reference clocks from 20 MHz to 60 MHz Numerical (NCO) frequency control Dynamically pullable output frequency enables FPGAbased PLLs (HDL available) Fast serial peripheral interface (SPI) bus write speeds up to 100 MHz On-the-fly frequency changes Dual PLL in compact 7 mm × 7 mm package Replaces multiple large clock ICs, PLLs, fanout buffers, crystal oscillators (XOs), and voltage controlled crystal oscillators (VCXOs) Mix and match output buffers In-circuit programmable LVPECL/LVDS/HCSL/LVCMOS Independent buffer (VDDOx) drives multiple technologies Enhanced power supply noise rejection APPLICATIONS FPGA-based jitter attenuators and low jitter PLLs Precision disciplined clocks and clock synthesizers Multirate clock synthesizers Optical: OTN/SDH/SONET Broadcast video: 3G SDI, HD SDI, SDI Networking and storage: Ethernet/SAS/Fibre Channel Wireless infrastructure: OBSAI/CPRI Industrial: IEEE 1588 Numerically controlled oscillators (NCOs) GENERAL DESCRIPTION The AD9578 is a programmable synthesizer intended for jitter attenuation and asynchronous clocking applications in high performance telecommunications, networking, data storage, serializer/deserializer (SERDES), and physical layer (PHY) applications.
The device incorporates two low jitter PLLs that provide any frequency with precision better than 0.
1 ppb, each with two separate output dividers, for a total of four programmable outputs, delivering maximum flexibility and jitter performance.
Each output is independently programmable to provide frequencies of up to 919 MHz with <410 fs typical rms jitter (12 kHz to 20 MHz) utiliz...

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