AD9520-1BCPZ-REEL7

Overview

The AD9520-1BCPZ-REEL7 is a multi-output clock generator and fan-out buffer 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 2.27 GHz to 2.65 GHz. The device provides twelve LVPECL outputs organized into four groups, each sharing a programmable divider from 1 to 32. Alternatively, any LVPECL output can be reconfigured as two CMOS outputs for frequencies up to 250 MHz. Additive output jitter is specified at 225 fs rms, with channel-to-channel skew under 16 ps within grouped outputs.

Feature Summary

• Integrated PLL and VCO with a frequency range of 2.27 GHz to 2.65 GHz
• Twelve LVPECL outputs divided into four groups, or twenty-four CMOS outputs
• Additive output jitter as low as 225 fs rms
• Nonvolatile EEPROM stores configuration settings for power-up

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 REEL7 suffix indicates tape-and-reel packaging when sourcing this component. Confirm that the specific AD9520-1 variant matches the required VCO tuning range and output configuration for the target design. Ensure compatibility with standard industrial temperature ranges (-40°C to +85°C).

Selection Notes

Select the AD9520-1 over other family members based on its specific internal VCO tuning range of 2.27 GHz to 2.65 GHz. Consider the requirement for twelve LVPECL outputs versus alternative driver types like LVDS found in the AD9522-1. Verify that the 64-lead LFCSP package fits the board layout constraints.

Part Context

This part belongs to the AD9520 family of multi-output clock generators. The AD9520-1 specifically denotes the version with an integrated VCO tuned between 2.27 GHz and 2.65 GHz. Other variants in the family may feature different VCO ranges or external VCO requirements.

Replacement Considerations

The AD9520-0BCPZ serves as a direct functional replacement, differing primarily in the internal VCO tuning range (2.53 GHz to 2.95 GHz). The AD9520-2BCPZ is another compatible option within the same family.