AD9520-4BCPZ-REEL7

Overview

The AD9520-4BCPZ-REEL7 is a multi-output clock generator featuring an integrated phase-locked loop and voltage-controlled oscillator. The on-chip VCO tunes from 1.4 GHz to 1.8 GHz, with support for external 3.3 V/5 V VCOs up to 2.4 GHz. It provides twelve 1.6 GHz LVPECL outputs in four groups, each configurable as two 250 MHz CMOS outputs. Additive output jitter is as low as 225 fs rms, with channel-to-channel skew under 16 ps. The device operates on a single 3.3 V supply, supports SPI and I²C interfaces, and includes nonvolatile EEPROM for configuration storage.

Feature Summary

• Integrated PLL and VCO tuning range of 1.4 GHz to 1.8 GHz
• Twelve 1.6 GHz LVPECL outputs divided into four groups
• Additive output jitter as low as 225 fs rms
• Nonvolatile EEPROM stores user-defined register settings

Applications

• Low jitter, low phase noise clock distribution
• Clock generation for SONET, 10Ge, 10GFC, Synchronous Ethernet, OTU2/3/4
• Forward error correction (G.710)
• Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
• High performance wireless transceivers

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing components. Confirm that the specific revision matches the required design specifications. Ensure compatibility with standard industrial temperature ranges during procurement planning.

Selection Notes

Select this component for applications requiring subpicosecond jitter performance and flexible output configurations. Consider the internal VCO range of 1.4 GHz to 1.8 GHz or utilize external VCXOs up to 2.4 GHz. Verify power supply requirements, specifically the 3.3 V main supply and separate driver supply options.

Part Context

This part belongs to the AD9520 family of clock generators. The -4 variant specifically integrates a VCO tuned between 1.4 GHz and 1.8 GHz. Other variants in the series may feature different internal VCO frequencies or output configurations. The REEL7 designation specifies the bulk packaging format for automated assembly.

Replacement Considerations

For LVDS driver requirements, consider the AD9522-4. Evaluate other AD9520 family members if different VCO frequency ranges are needed. Verify pinout and electrical specifications before substituting with similar clock generators.