Add to Signal Chain Designer

AD9523:  14-Output, Low Jitter Clock generator

Product Details

Product Status:Recommended for New Designs

The AD9523 provides a low power, multi-output, clock distribution function with low jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 3.6 GHz to 4.0 GHz.

The AD9523 is defined to support the clock requirements for long term evolution (LTE) and multicarrier GSM base station designs. It relies on an external VCXO to provide the reference jitter cleanup to achieve the restrictive low phase noise require-ments necessary for acceptable data converter SNR performance.

The input receivers, oscillator, and zero delay receiver provide both single-ended and differential operation. When connected to a recovered system reference clock and a VCXO, the device generates 14 low noise outputs with a range of 1 MHz to 1 GHz, and one dedicated buffered output from the input PLL (PLL1). The frequency and phase of one clock output relative to another clock output can be varied by means of a divider phase select function that serves as a jitter-free coarse timing adjustment in increments that are equal to the period of the signal coming out of the VCO.

An in-package EEPROM can be programmed through the serial interface to store user-defined register settings for power-up and chip reset.

  • LTE and multicarrier GSM base stations
  • Wireless and broadband infrastructure
  • Medical instrumentation
  • Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
  • Low jitter, low phase noise clock distribution
  • Clock generation and translation for SONET, 10Ge, 10G FC, and other 10 Gbps protocols
  • Forward error correction (G.710)
  • High performance wireless transceivers
  • ATE and high performance instrumentation


  • Output frequency: <1 MHz to 1 GHz
  • Start-up frequency accuracy: <±100 ppm (determined by VCXO reference accuracy)
  • Zero delay operation
    Input-to-output edge timing: <±500 ps
  • 14 outputs: configurable LVPECL, LVDS, HSTL, and LVCMOS
  • 14 dedicated output dividers with jitterless adjustable delay
  • Adjustable delay: 8 resolution steps of ½ period of VCO output divider
  • Output-to-output skew: <±50 ps
  • Duty-cycle correction for odd divider settings
  • Automatic synchronization of all outputs on power-up
  • Nonvolatile EEPROM stores configuration settings
  • Please see data sheet for additional features

Functional Block Diagram

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADIsimCLK Design and Evaluation Software
ADIsimCLK is the design tool developed specifically for Analog Devices' range of ultra-low jitter clock distribution and clock generation products. Whether your application is in wireless infrastructure, instrumentation, networking, broadband, ATE or other areas demanding predictable clock performance, ADIsimCLK will enable you to rapidly develop, evaluate and optimize your design.
ADIsim Design/Simulation Tools HTML
AD9523/AD9523-1 IBIS Model IBIS Models HTML
AD9523 Low Jitter Clock Generator Linux Driver Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD9523/AD9523-1 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD9523-1/PCBZ Status: Production Evaluation Board $190.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

Check Inventory & Purchase

View Sales and Distribution Offices

content here.
content here.

Review this Product