AD9522-4BCPZ

Overview

The AD9522-4BCPZ is a 12-channel clock generator featuring an integrated voltage-controlled oscillator (VCO) with a tuning range of 1.4 GHz to 1.8 GHz. It supports external VCOs up to 2.4 GHz and accepts reference inputs from CMOS, LVPECL, or LVDS sources up to 250 MHz. The device provides twelve 800 MHz LVDS outputs, each configurable as two 250 MHz CMOS outputs. Key electrical parameters include a maximum output frequency of 1600 MHz, a maximum input frequency of 250 MHz, and operation on a single 3.3 V supply. It operates within the -40°C to +85°C temperature range.

Feature Summary

• Integrated PLL with on-chip VCO (1.4 GHz–1.8 GHz) and support for external VCOs up to 2.4 GHz
• Twelve LVDS outputs divided into four groups, each with programmable dividers (1-to-32) and phase delay
• Low additive output jitter of 242 fs rms and channel-to-channel skew under 60 ps
• Nonvolatile EEPROM stores configuration settings for power-up and chip reset

Applications

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

Procurement Notes

Verify the specific suffix BCPZ corresponds to the lead-free tape-and-reel or tray packaging format required by your assembly process. Confirm that the ordering code matches the exact Rev. A datasheet specifications. Ensure compatibility with standard industrial temperature ranges (-40°C to +85°C) for your application environment.

Selection Notes

Select the AD9522-4 variant specifically when the internal VCO frequency range of 1.4 GHz to 1.8 GHz aligns with your frequency planning requirements. Other variants in the family offer different VCO ranges (e.g., 2.0 GHz or 2.8 GHz). Ensure the 3.3 V single-supply constraint fits your power budget and that the LFCSP-64 package footprint is accommodated in the PCB layout.

Part Context

The AD9522-4 is part of the AD9522 family of low-phase-noise clock generators. It is functionally equivalent to the AD9520-4, which utilizes LVPECL drivers instead of LVDS drivers. This component serves as a multi-output clock distribution solution with subpicosecond jitter performance, integrating both the PLL and VCO on a single die.

Replacement Considerations

The AD9520-4 is a direct functional equivalent within the same family, differing only in output driver type (LVPECL vs. LVDS). For other VCO frequency ranges, consider the AD9522-0 (2.8 GHz VCO), AD9522-1 (2.4 GHz VCO), or AD9522-2 (2.0 GHz VCO). Verify pinout and register compatibility before substitution.