AD9524BCPZ

Overview

The AD9524BCPZ is a low-power, multi-output clock generator and jitter cleaner featuring a dual PLL architecture with an integrated VCO. It provides six configurable differential outputs (LVPECL, LVDS, HSTL) and supports single-ended CMOS modes. The device operates from 1 MHz to 1 GHz with absolute output jitter below 200 fs at 122.88 MHz. It includes dedicated output dividers with adjustable delay, automatic synchronization on power-up, and nonvolatile EEPROM storage for configuration settings.

Feature Summary

• Dual PLL architecture: PLL1 for reference cleanup with external VCXO support; PLL2 with integrated low-noise VCO (3.6 GHz to 4.0 GHz).
• Six configurable output drivers supporting LVPECL, LVDS, HSTL, and LVCMOS formats with duty-cycle correction.
• Dedicated output dividers provide jitter-free adjustable delay in 63 resolution steps of half the VCO divider period.
• SPI- and I2C-compatible serial control port with nonvolatile EEPROM for storing user-defined register settings.

Applications

• LTE and multicarrier GSM base stations
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFE
• SONET, 10Ge, and 10G FC protocol clock generation
• Low jitter clock distribution for medical instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current data sheet to confirm package type and temperature range. Confirm that the required supply voltages (VDD3_PLL1, VDD3_PLL2, VDD3_REF, VDD3_OUT at 3.3 V and VDD1.8_OUT at 1.8 V) match the target system design before procurement.

Selection Notes

Select this component when low phase noise and precise timing alignment are critical. Ensure the application requires an external VCXO for PLL1 reference cleanup if ultra-low jitter is needed. Verify that the available output formats (LVPECL, LVDS, HSTL, CMOS) align with the downstream device requirements.

Part Context

The AD9524 belongs to Analog Devices' family of integer-N clock generators designed for high-performance wireless infrastructure. It complements other devices like the AD9522 and AD9520 by offering a specific combination of dual PLLs, integrated VCO, and flexible output configurations optimized for LTE and telecom applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult the manufacturer's official documentation for cross-reference information or updated product lifecycle status.

FAQ

What is the frequency range of the integrated VCO?

The integrated VCO tunes from 3.6 GHz to 4.0 GHz.

How many resolution steps are available for the adjustable delay?

There are 63 resolution steps, each equal to half the period of the VCO output divider signal.

Can the device operate without an external VCXO?

Yes, but using an external VCXO with PLL1 is recommended for achieving the restrictive low phase noise requirements necessary for acceptable data converter SNR performance.