AD9522-4BCPZ-REEL7

Overview

The AD9522-4BCPZ-REEL7 is a 12-channel clock generator and fanout buffer featuring an integrated phase-locked loop (PLL) and voltage-controlled oscillator (VCO). The on-chip VCO tunes from 1.4 GHz to 1.8 GHz, supporting external VCOs up to 2.4 GHz. It provides 12 LVDS outputs (max 800 MHz) or 24 CMOS outputs (max 250 MHz), with each group containing a programmable divider (1-to-32) and phase delay. Key electrical parameters include a 3.3 V supply voltage, 4.8 mA typical charge pump current, and operation over the -40°C to +85°C temperature range.

Feature Summary

• Integrated PLL and VCO tuning from 1.4 GHz to 1.8 GHz
• 12 LVDS outputs (up to 800 MHz) or 24 CMOS outputs (up to 250 MHz)
• Programmable channel dividers (1-to-32) with coarse phase delay
• SPI and I²C serial control port with nonvolatile EEPROM storage

Applications

• Clock distribution for SONET, 10Ge, and 10G FC protocols
• Clocking high-speed ADCs, DACs, DDSs, DDCs, and DUCs
• High-performance wireless transceivers
• ATE and high-performance instrumentation

Procurement Notes

Verify that the REEL7 suffix indicates tape-and-reel packaging rather than tray packaging when sourcing components. Confirm the specific device variant matches the required VCO frequency range and output driver types. Ensure compatibility with standard industrial temperature ratings (-40°C to +85°C) for the intended application environment.

Selection Notes

Select this component when subpicosecond jitter performance and low phase noise are critical requirements. Choose the AD9522-4 specifically if the design requires an internal VCO tuned between 1.4 GHz and 1.8 GHz. Consider the AD9520-4 equivalent if LVPECL drivers are preferred over LVDS drivers for the output stage.

Part Context

The AD9522-4 belongs to the AD9522 family of multi-output clock generators. It shares the same 64-lead LFCSP package and core architecture as other variants like the AD9522-0, AD9522-1, and AD9522-2, which differ primarily in their internal VCO frequency ranges and maximum supported output frequencies.

Replacement Considerations

The AD9520-4 is an equivalent device within the same family but utilizes LVPECL/CMOS drivers instead of the LVDS/CMOS drivers found in the AD9522-4. Other AD9522 variants may be considered if different VCO tuning ranges are required.