Features and Benefits

  • Output frequency range: 800 MHz to 12.8 GHz
  • Jitter = 18 fsRMS (integration bandwidth: 100 Hz to 100 MHz)
  • Jitter = 27 fsRMS (ADC SNR method)
  • Wideband noise floor: −160 dBc/Hz at 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 1000 MHz
    • Typical spurious fPFD: −95 dBc at fOUT = 12 GHz
  • Reference input to output delay specifications
    • Device-to-device standard deviation: 3 ps
    • Temperature coefficient: 0.03 ps/°C
    • Adjustment step size: < ±0.1 ps
  • Multichip output phase alignment
  • 3.3 V and 5 V power supplies
  • 7 mm × 7 mm 48-lead LGA

Product Details

integer-N phased locked loop (PLL) with an integrated voltage controlled oscillator (VCO) ideally suited for data converter and mixed signal front end (MxFE) clock applications. The high performance PLL has a figure of merit of −239 dBc/Hz, ultralow 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 ADF4377 generate frequencies from 800 MHz to 12.8 GHz. The ADF4377 integrates all necessary power supply bypass capacitors, saving board space on compact boards.

For multiple data converter and MxFE clock applications, the ADF4377 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.

These features allow for predictable and precise multichip clock and system reference (SYSREF) alignment. JESD204B and JESD204C Subclass 1 solutions are supported by pairing the ADF4377 with an integrated circuit (IC) that distributes pairs of reference and SYSREF signals.


  • High performance data converter and MxFE clocking
  • Wireless infrastructure (MC-GSM, 5G)
  • Test and measurement
  • Product Lifecycle icon-recommended Recommended for New Designs

    This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

    Evaluation Kits (1)

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    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.

    Product Recommendations

    ADF4377 Companion Parts

    Recommended Reference & SYSREF Distribution

    Recommended Reference Distribution Buffer

    Recommended Ultra Low Noise/High PSRR LDO

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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