ADF4378
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ADF4378

Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer

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800MHz to 12.8GHz Integer-N PLL/VCO with SYSREF re-timer for High Performance Data Converter Clocking Applications

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $116.63
Features
  • Output frequency range: 800 MHz to 12.8 GHz
  • Jitter = 18 fsRMS (Integration BW: 100 Hz to 100 MHz)
  • Jitter = 27 fsRMS (ADC SNR Method)
  • Wideband Noise Floor: -160 dBc/Hz @12 GHz
  • PLL Specifications:
    • -239 dBc/Hz: Normalized In-Band Phase Noise Floor
    • -147 dBc/Hz: Normalized In-Band 1/f Noise
    • Phase Detector Frequency up to 500 MHz
    • Reference Input Frequency up to 1 GHz
    • Typical -100 dBc PFD spurs
  • Reference to Output Delay Specifications:
    • Part-to-Part Standard Deviation: 3 ps
    • Temperature Drift: 0.03 ps/℃
    • Adjustment Step Size: <+/-0.1 ps
  • Multi-chip Output Phase Alignment
  • Retimed LVDS SYSREF output
  • 3.3 V and 5 V Power supplies
  • 7 mm x 7 mm 48 Lead LGA
Additional Details
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The ADF4378 is a high performance, ultra-low jitter, integer-N phased locked loop (PLL) with an integrated voltage controlled oscillator (VCO) and system reference (SYSREF) retimer ideally suited for data converter and mixed signal front end (MxFE) clock applications. The high performance PLL has a −239 dBc/Hz: normalized in-band phase noise floor, ultra-low 1/f noise, and a high phase/frequency detector (PFD) frequency that can achieve ultralow in-band noise and integrated jitter. The fundamental VCO and output divider of the ADF4378 generate frequencies from 800 MHz to 12.8 GHz. The ADF4378 integrates all necessary power-supply bypass capacitors, which saves board space on compact boards.

For multiple data converter and MxFE clock applications, the ADF4378 simplifies clock alignment and calibration routines required with other clock solutions by implementing the automatic reference to output synchronization feature, the matched reference to output delays across process, voltage, and temperature feature, and the less than ±0.1 ps, jitter free reference to output delay adjustment capability feature.

The general-purpose pulse retimer feature allows for predictable and precise multichip clock and pulse alignment for SYSREF, SYNC, and multichip synchronization (MCS) architectures. JESD204B and JESD204C Subclass 1 solutions are supported by pairing the ADF4378 with an integrated circuit (IC) that distributes pairs of reference and SYSREF signals. The pulse retimer feature simplifies the system design by allowing the widely distributed SYSREF to only meet the slower reference frequency timing vs. the much more stringent output clock timing. Serial-peripheral interface (SPI) selectable current-mode logic (CML)/low-voltage positive/pseudo emitter-coupled logic (LVPECL) or low-voltage differential signaling (LVDS) SYSREF input and LVDS SYSREF output allow CML to LVDS signal conversion, which simplifies clock and SYSREF alignment for various converters. The pulse retimer feature also can be used with transceiver MCS signals and SYNC signals for other ICs.

APPLICATIONS

  • High Performance Data Converter and MxFE Clocking
  • Wireless infrastructure (MC-GSM, 5G)
  • Test and Measurement
  • FPGA with integrated data converters
Part Models 2
1ku List Price Starting From $116.63

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADF4378BCCZ
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ADF4378BCCZ-RL7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

EVAL-ADF4378

Evaluating the ADF4378 Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer

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EVAL-ADF4378

Evaluating the ADF4378 Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer

Evaluating the ADF4378 Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer

Features and Benefits

  • Self-contained board, including ADF4378 frequency synthesizer with integrated VCO, loop filter, USB interface, on board reference oscillator, propagation delay calibration paths and voltage regulators
  • Windows®-based software allows control of synthesizer functions from a PC
  • Externally powered by 6 V

Product Detail

TThe EV-ADF4378SD1Z evaluates the performance of the ADF4378 frequency synthesizer with an integrated voltage controlled oscillator (VCO) for phase-locked loops (PLLs). A photograph of the EV-ADF4378SD1Z is shown in Figure 1. The EV-ADF4378SD1Z contains the ADF4378 frequency synthesizer with an integrated VCO, a USB interface, power supply connectors, on-board reference oscillator, propagation delay calibration paths, and Subminiature Version A (SMA) connectors. The outputs are AC-coupled with 50 Ω transmission lines, which make the outputs suitable to drive 50 Ω impedance instruments. The EV-ADF4378SD1Z requires an SDP-S board (not supplied with the kit). The SDP-S allows software programming of the EV-ADF4378SD1Z with ACE software.

Full specifications on the ADF4378 frequency synthesizer are available in the ADF4378 data sheet available from Analog Devices, Inc., and must be consulted with this user guide when using the EV-ADF4378SD1Z evaluation board.

Tools & Simulations

Tools & Simulations 3

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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