AD9520-2BCPZ

Overview

The AD9520-2BCPZ is a multi-output clock generator and fanout buffer in a 64-lead LFCSP package. It integrates a phase-locked loop (PLL) with an on-chip voltage-controlled oscillator (VCO) tuning from 2.02 GHz to 2.335 GHz, or supports external VCOs/VCXOs up to 2.4 GHz. The device provides twelve 1.6 GHz LVPECL outputs grouped into four sets, each with a 1-to-32 divider and phase delay capability. Outputs can be reconfigured as CMOS for frequencies up to 250 MHz. Additive output jitter is as low as 225 fs rms, with channel-to-channel skew under 16 ps within groups. It operates on a single 3.3 V supply over the -40°C to +85°C industrial temperature range.

Feature Summary

• Integrates a PLL with an on-chip VCO (2.02 GHz to 2.335 GHz) or supports external VCO/VCXO up to 2.4 GHz
• Provides twelve 1.6 GHz LVPECL outputs divided into four groups, each with a 1-to-32 divider and adjustable phase offset
• Supports reconfiguration of LVPECL outputs to dual CMOS outputs for frequencies up to 250 MHz
• Features additive output jitter as low as 225 fs rms and channel-to-channel skew less than 16 ps

Applications

• Low jitter, low phase noise clock distribution
• Clock generation and translation 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 corresponds to the 64-lead LFCSP tray packaging configuration. Confirm that the ordering part number matches the exact revision required for the design, as Analog Devices may update specifications without notice. Ensure compatibility with the system's serial control interface requirements for SPI or I²C operation.

Selection Notes

Select the AD9520-2 when subpicosecond jitter performance and flexible output configurations are required. Choose this component if the application demands an integrated VCO covering the 2.02 GHz to 2.335 GHz range or needs to interface with external oscillators up to 2.4 GHz. Consider the 64-lead LFCSP package constraints and the need for separate VS and VS_DRV power supplies for optimal driver performance.

Part Context

The AD9520-2BCPZ belongs to the AD9520 family of clock generators, which also includes variants like the AD9520-0, AD9520-1, and AD9520-3. These devices share similar functional architectures but differ primarily in the frequency range of their integrated VCOs. The AD9520-2 specifically targets applications requiring the 2.02 GHz to 2.335 GHz internal tuning range.

Replacement Considerations

For direct pin-compatible replacements within the same family, consider the AD9520-0, AD9520-1, or AD9520-3, noting that their integrated VCO frequency ranges differ. If LVDS outputs are required instead of LVPECL, the AD9522-2 is the designated alternative.