AD9520-3BCPZ-REEL7

Overview

The AD9520-3BCPZ-REEL7 is a multi-output clock generator featuring an integrated phase-locked loop (PLL) and voltage-controlled oscillator (VCO). The on-chip VCO tunes from 1.72 GHz to 2.25 GHz, with support for external 3.3 V/5 V VCOs up to 2.4 GHz. It provides twelve 1.6 GHz LVPECL outputs or twenty-four 250 MHz CMOS outputs. Additive output jitter is as low as 225 fs rms. The device operates on a single 3.3 V supply within the -40°C to +85°C range and includes nonvolatile EEPROM for configuration storage.

Feature Summary

• Integrated PLL and VCO tuning from 1.72 GHz to 2.25 GHz
• Twelve LVPECL outputs divided into four groups with 1-to-32 dividers
• Additive output jitter as low as 225 fs rms
• SPI and I2C compatible serial control port with nonvolatile EEPROM

Applications

• Low jitter, low phase noise clock distribution
• Clock generation for SONET, 10Ge, 10G FC, and Synchronous Ethernet
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFEs
• High performance wireless transceivers
• ATE and high performance instrumentation

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing. Confirm the specific AD9520-3 variant matches the required VCO frequency range of 1.72 GHz to 2.25 GHz. Ensure the LFCSP-64 package footprint aligns with the design layout. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component for applications requiring subpicosecond jitter performance and flexible output configurations. Use the internal VCO for frequencies between 1.72 GHz and 2.25 GHz, or integrate an external VCXO up to 2.4 GHz if needed. Verify that the input reference supports CMOS, LVDS, or LVPECL formats up to 250 MHz. Consider the separate output driver supply voltage range of 2.375 V to 3.465 V for signal integrity.

Part Context

This part belongs to the AD9520 family of clock generators. The AD9520-3 specifically integrates a VCO tuned to 1.72 GHz–2.25 GHz. Other variants in the series offer different VCO ranges or features. The REEL7 designation specifies the reel packaging format for automated assembly.

Replacement Considerations

The AD9522-3 serves as a functional alternative if LVDS drivers are required instead of LVPECL. Verify pin compatibility and register settings when substituting other AD9520 family members.