ADF4378BCCZ

Overview

The ADF4378BCCZ is a microwave wideband synthesizer featuring an integrated voltage-controlled oscillator (VCO) and a deterministic general-purpose pulse retimer. It operates as an integer-N phase-locked loop (PLL) with an output frequency range of 800 MHz to 12.8 GHz. The device achieves ultra-low jitter, specified at 18 fs RMS (100 Hz to 100 MHz integration bandwidth) and 27 fs RMS via the ADC SNR method. Key electrical characteristics include a wideband noise floor of −160 dBc/Hz at 12 GHz, a normalized in-band phase noise floor of −239 dBc/Hz, and a normalized 1/f phase noise floor of −147 dBc/Hz. It supports phase detector frequencies up to 500 MHz and reference input frequencies up to 1000 MHz.

Feature Summary

• Ultra-low integrated jitter: 18 fs RMS (100 Hz to 100 MHz) and 27 fs RMS (ADC SNR method).
• Integrated deterministic general-purpose pulse retimer for SYSREF, SYNC, and MCS applications.
• High-performance PLL with normalized in-band phase noise floor of −239 dBc/Hz and 1/f floor of −147 dBc/Hz.
• Output frequency range from 800 MHz to 12.8 GHz with programmable dividers.

Applications

• High performance data converter and MxFE clocking
• Wireless infrastructure (MC-GSM, 5G)
• Test and measurement equipment
• FPGA with integrated data converters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Confirm that the component meets all required environmental and regulatory standards for the intended deployment environment before finalizing procurement.

Selection Notes

Select this component for applications requiring precise multichip synchronization and ultra-low jitter generation. Ensure the design accommodates the dual power supply requirements (3.3 V and 5 V) and utilizes the integrated bypass capacitors to minimize board space. Verify compatibility with JESD204B/C Subclass 1 architectures if SYSREF alignment is critical.

Part Context

The ADF4378 belongs to Analog Devices' family of high-performance microwave wideband synthesizers. It is designed to simplify clock alignment and calibration routines in complex mixed-signal systems by providing automatic reference-to-output synchronization and matched delays across process, voltage, and temperature variations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Analog Devices resources for cross-reference information or updated product line replacements.

FAQ

What is the maximum phase detector frequency supported by the ADF4378?

The ADF4378 supports a phase detector (PFD) frequency of up to 500 MHz.

How does the ADF4378 handle SYSREF signal alignment?

It integrates a general-purpose pulse retimer that reclocks the SYSREF input to provide predictable and precise multichip clock and pulse alignment for SYSREF, SYNC, and MCS applications.

What is the typical RMS jitter specification for the ADF4378?

The typical RMS jitter is 18 fs when measured with an integration bandwidth of 100 Hz to 100 MHz, and 27 fs using the ADC SNR method.