AD9520-0BCPZ

Overview

The AD9520-0BCPZ is a multi-output clock generator and distribution IC from Analog Devices, packaged in a 64-lead LFCSP. It integrates a low-phase-noise PLL and an on-chip VCO tuning from 2.53 GHz to 2.95 GHz, supporting external VCO/VCXO inputs up to 2.4 GHz. The device provides twelve 1.6 GHz LVPECL outputs organized into four groups, each with a programmable divider (1-to-32) and phase offset capability. Any LVPECL output can be reconfigured as two 250 MHz CMOS outputs. Additive output jitter is as low as 225 fs rms, with channel-to-channel skew under 16 ps for grouped outputs. Configuration settings are stored in nonvolatile EEPROM, and the device supports SPI and I²C serial control interfaces.

Feature Summary

• Integrated PLL and VCO with frequency range of 2.53 GHz to 2.95 GHz
• Twelve 1.6 GHz LVPECL outputs divided into four groups with independent dividers
• Additive output jitter as low as 225 fs rms
• Nonvolatile EEPROM stores configuration settings for power-up and reset

Applications

• Low jitter, low phase noise clock distribution
• Clock generation for SONET, 10Ge, 10GFC, Synchronous Ethernet, OTU2/3/4
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
• High performance wireless transceivers
• ATE and high performance instrumentation

Procurement Notes

Verify the specific ordering suffix BCPZ corresponds to the 64-lead LFCSP package variant when sourcing. Confirm that the required voltage levels for VS and VS_DRV align with the specified operating ranges before integration. Ensure ESD precautions are taken during handling due to the sensitivity of the CMOS inputs and outputs.

Selection Notes

Select the AD9520-0BCPZ when subpicosecond jitter performance and integrated VCO functionality are required. Choose this model over the AD9522 if LVPECL drivers are preferred over LVDS. Consider the available divide ratios and phase offset capabilities to ensure the timing requirements for the target application are met within the specified temperature range.

Part Context

The AD9520-0BCPZ belongs to the AD9520 family of clock generators. The 'BCPZ' suffix indicates the specific 64-lead LFCSP package type. This component is designed for applications requiring flexible clock distribution with minimal added jitter, serving as a central timing solution for high-speed data converters and communication infrastructure.

Replacement Considerations

For applications requiring LVDS outputs instead of LVPECL, the AD9522-0 is the designated alternative within the same family. Other members of the AD9520 series may offer different VCO ranges or output configurations; verify electrical specifications against the current design requirements before substitution.