AD9520-3BCPZ

Overview

The AD9520-3BCPZ is a multi-output clock generator and distribution IC from Analog Devices, housed in a 64-lead LFCSP package. It integrates a phase-locked loop (PLL) and a voltage-controlled oscillator (VCO) with a tuning range of 1.72 GHz to 2.25 GHz. The device provides twelve LVPECL outputs organized into four groups, each capable of being reconfigured as two CMOS outputs for frequencies up to 250 MHz. It supports reference inputs up to 250 MHz via CMOS, LVDS, or LVPECL interfaces and accepts crystals between 16.62 MHz and 33.33 MHz. Power is supplied via a single 3.3 V source, with an optional separate output driver supply ranging from 2.375 V to 3.465 V.

Feature Summary

• Integrated PLL and on-chip VCO tuning from 1.72 GHz to 2.25 GHz
• Twelve LVPECL outputs divided into four groups, configurable as 24 CMOS outputs
• Supports external 3.3 V/5 V VCO/VCXO up to 2.4 GHz
• Nonvolatile EEPROM stores configuration settings for power-up and reset

Applications

• Clock generation and translation for SONET, 10Ge, 10G FC, Synchronous Ethernet, and OTU2/3/4
• Forward error correction (G.710)
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFEs
• High-performance wireless transceivers
• ATE and high-performance instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and reel specifications. Confirm that the component meets RoHS compliance requirements for the intended deployment environment. Cross-reference the datasheet revision to ensure all electrical parameters align with the latest manufacturing standards.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are required for multi-channel clock distribution. Ensure the application can accommodate the 64-lead LFCSP footprint and operates within the specified -40°C to +85°C temperature range. Consider the internal VCO range or external VCXO compatibility based on the target output frequency and jitter specifications.

Part Context

The AD9520-3BCPZ belongs to the AD9520 family of clock generators. It is distinct from variants like the AD9522-3, which offers LVDS drivers instead of LVPECL. The part is designed for high-frequency applications requiring precise timing alignment across multiple channels, utilizing both SPI and I2C serial control ports for configuration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.