AD9523BCPZ-REEL7

Overview

The AD9523BCPZ-REEL7 is a jitter cleaner and clock generator from Analog Devices, housed in a 72-LFCSP-VQ package. It features a dual PLL architecture with an integrated VCO tuning from 3.6 GHz to 4.0 GHz. The device provides 14 differential or 29 LVCMOS outputs supporting LVPECL, LVDS, HSTL, and CMOS standards. Maximum output frequency reaches 1 GHz with input frequencies up to 400 MHz. Absolute output jitter is less than 200 fs at 122.88 MHz. Operating voltage ranges from 1.71 V to 3.465 V across multiple supplies, with an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual PLL architecture: PLL1 for reference cleanup with external VCXO support; PLL2 with integrated low-noise VCO (3.6–4.0 GHz).
• 14 configurable differential outputs (LVPECL, LVDS, HSTL) and 29 LVCMOS outputs with adjustable delay steps.
• Low absolute output jitter (<200 fs at 122.88 MHz) and distribution phase noise floor of −160 dBc/Hz.
• Nonvolatile EEPROM stores configuration settings; supports SPI and I2C serial control ports.

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

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging rather than tray packaging when sourcing. Confirm the specific revision level against the latest Analog Devices documentation to ensure compatibility with current manufacturing processes and pinout definitions.

Selection Notes

Select this component for designs requiring low-jitter clock distribution with flexible output formats. Ensure the external VCXO meets the required phase noise specifications for PLL1 operation. Verify that the system power supply rails align with the specified 3.3 V and 1.8 V requirements for optimal performance.

Part Context

This part belongs to the AD9523 family of clock generators. The BCPZ designation identifies the lead-free 72-lead LFCSP package variant. The REEL7 suffix specifies the reel packaging format for automated assembly, distinguishing it from tray-packaged equivalents.

Replacement Considerations

Check for updated revisions within the AD9523 series. No direct cross-model substitutes are confirmed in the provided documentation. Evaluate pin-to-pin compatibility if considering alternative multi-output clock generators from other manufacturers.

FAQ

What is the frequency range of the integrated VCO?

The on-chip VCO tunes from 3.6 GHz to 4.0 GHz.

Does the AD9523 support zero-delay mode?

Yes, the device supports zero-delay operation with input-to-output edge timing less than 150 ps.

What are the supported output logic families?

The outputs are configurable as LVPECL, LVDS, HSTL, and LVCMOS.