ADF4378

RECOMMENDED FOR NEW DESIGNS

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

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

Data Sheet (Rev. A) Product Selection Table
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Overview

  • 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

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
ADF4378
Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer
ADF4378 Functional Block Diagram ADF4378 Pin Configuration ADF4378 Chip
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Documentation

Data Sheet 1

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Software Resources

Device Drivers 2

Hardware Ecosystem

Parts Product Life Cycle Description
LDO Linear Regulators 4
ADM7150
RECOMMENDED FOR NEW DESIGNS 800 mA, Ultra Low Noise/High PSRR LDO
ADM7151
RECOMMENDED FOR NEW DESIGNS 800 mA Ultralow Noise, High PSRR, RF Linear Regulator
LT3041
RECOMMENDED FOR NEW DESIGNS 20 V, 1 A, Ultra-Low Noise, Ultra-High PSRR Linear Regulator with VIOC Control
LT3045
RECOMMENDED FOR NEW DESIGNS 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator
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Tools & Simulations

IBIS Model 1

ADIsimPLL™

ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.

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LTspice

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.

Evaluation Kits

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EVAL-ADF4378

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

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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 Details

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.
EVAL-ADF4378
Evaluating the ADF4378 Microwave Wideband Synthesizer with Integrated VCO and Deterministic General-Purpose Pulse Retimer
ADF4378SD1Z Evaluation Board - Angle ADF4378SD1Z Evaluation Board - Top ADF4378SD1Z Evaluation Board - Bottom

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