AD9520-4BCPZ

Overview

The AD9520-4BCPZ 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 organized into four groups, each with a 1-to-32 divider. Outputs can be reconfigured as 250 MHz CMOS signals. 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 within the -40°C to +85°C range.

Feature Summary

• Integrated PLL and VCO tuning from 1.4 GHz to 1.8 GHz
• Twelve 1.6 GHz LVPECL outputs in four groups with 1-to-32 dividers
• Additive output jitter as low as 225 fs rms
• SPI and I²C serial control with nonvolatile EEPROM storage

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 specific suffix BCPZ against the manufacturer's ordering guide to confirm package type and tape/reel specifications. Confirm RoHS compliance status and check for any recent revision changes that may affect pinout or electrical parameters before finalizing procurement.

Selection Notes

Select the AD9520-4 variant specifically when the application requires an internal VCO frequency range of 1.4 GHz to 1.8 GHz. Ensure the design accommodates the 64-lead LFCSP package dimensions. Verify that the required output frequencies align with the 1.6 GHz LVPECL limit or the 250 MHz CMOS reconfiguration capability.

Part Context

This component belongs to the AD9520 family of multi-output clock generators. The AD9520-4 is distinguished by its specific on-chip VCO tuning range of 1.4 GHz to 1.8 GHz. Other family members offer different VCO ranges or output configurations, such as the AD9520-0 which supports higher internal VCO frequencies.

Replacement Considerations

Direct replacements within the same family include AD9520-0, AD9520-1, and AD9520-2. These share the same package and interface but differ in VCO tuning ranges. Verify that the alternative part's VCO frequency covers the target application requirements.