AD9520-3 12 LVPECL/24 CMOS Output Clock Generator with Integrated 2 GHz VCO

The AD9520-31 provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.72 GHz to 2.25 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used.

The AD9520 serial interface supports both SPI and I2C® ports. An in-package EEPROM can be programmed through the serial interface and store user-defined register settings for power-up and chip reset.

The AD9520 features 12 LVPECL outputs in four groups. Any of the 1.6 GHz LVPECL outputs can be reconfigured as two 250 MHz CMOS outputs.

Each group of outputs has a divider that allows both the divide ratio (from 1 to 32) and the phase (coarse delay) to be set.

The AD9520 is available in a 64-lead LFCSP and can be operated from a single 3.3 V supply. The external VCO can have an operating voltage up to 5.5 V. A separate output driver power supply can be from 2.375 V to 3.465 V.

The AD9520 is specified for operation over the standard industrial range of −40°C to +85°C.

1The AD9520 is used throughout this data sheet to refer to all the members of the AD9520 family. However, when AD9520-3 is used, it is referring to that specific member of the AD9520 family.

Applications
  • 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)
  • Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
  • High performance wireless transceivers
  • ATE and high performance instrumentation
  • Broadband infrastructures
Features and Benefits
  • Low phase noise, phase-locked loop (PLL)
  • On-chip VCO tunes from 1.72 GHz to 2.25 GHz
  • Auto and manual reference switchover/holdover modes
  • Zero delay operation optional
  • Twelve 1.6 GHz LVPECL/CMOS outputs divided into four groups
  • Each group of 4 has a 1 to 32 divider with phase delay
  • SPI- and I2C-compatible control port
  • Nonvolatile EEPROM stores configuration settings
  • Clock & Timing
    RF & Microwave
    AD9520-x IBIS Models
    Data Sheets
    Documentnote
    AD9520-3: 12 LVPECL/24 CMOS Output Clock Generator with Integrated 2 GHz VCO Data Sheet (Rev. B)PDF 1.4 M
    Application Notes
    Documentnote
    AN-0983: Introduction to Zero-Delay Clock Timing TechniquesPDF 162 kB
    User Guides
    Documentnote
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD9520-3BCPZ Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)OTH 260-40 to 85C14.8812.65Y
    AD9520-3BCPZ-REEL7 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)REEL 750-40 to 85C14.8812.65Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    AD9520-3/PCBZEvaluation Board190Y
    Reference Materials
    AD9520-3: 12 LVPECL/24 CMOS Output Clock Generator with Integrated 2 GHz VCO Data Sheet (Rev. B) ad9520-3
    AD9520-x (All Models/All Speed Grades) ad9520-0
    AN-0983: Introduction to Zero-Delay Clock Timing Techniques ad9510
    AN-0983: 零延迟时钟定时技术简介 (Rev. 0) ad9510
    RF Source Booklet adf9010
    CN-0186: Phase Coherent FSK Modulator ad9520-0