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  3. Phase Locked Loop (PLL) Synthesizer & Translation Loop
  4. Fractional-N PLL
  5. HMC838

Data Sheet
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Alternative Parts

ADF4356
ADF4356

Wideband Synthesizer with Integrated VCO

Overview

Features and Benefits

  • Tri-band RF Bandwidth: 795 - 945, 1590 - 1890, 3180 - 3780 MHz
  • Ultra Low Phase Noise -111 dBc/Hz in Band Typ.
  • Figure of Merit (FOM) -227 dBc/Hz
  • < 180 fs RMS Jitter
  • 24-bit Step Size, Resolution 3 Hz typ
  • Exact Frequency Mode
  • Built-in Digital Self Test
  • 40 Lead 6x6 mm SMT Package: 36 mm2

Product Details

The HMC838LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an Integrated Voltage Controlled Oscillator (VCO). The synthesizer consists of an integrated low noise VCO with a triband output, an autocalibration subsystem for low voltage VCO tuning, a very low noise digital Phase Detector (PD), a precision controlled charge pump, a low noise reference path divider and a fractional divider.

The fractional synthesizer features an advanced delta-sigma modulator design that allows both ultra-fine step sizes and low spurious products. The phase detector (PD) features cycle slip prevention (CSP) technology to allow faster frequency hopping times. Ultra low in-close phase noise and low spurious also allows wider loop bandwidths for faster frequency hopping and low micro-phonics.

For theory of operation and register map refer to the "PLLs with Integrated VCO - RF VCOs" Operating Guide.

APPLICATIONS

  • Cellular/4G Infrastructure
  • Repeaters and Femtocells
  • Communications Test Equipment
  • CATV Equipment
  • Phased Array Applications
  • DDS Replacement 
  • Very High Data Rate Radios

Product Categories

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Product Lifecycle icon-not-recommended Last Time Buy

All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Application Notes (4)
  • User Guides (1)
  • Product Selection Guide (1)
  • Quality Documentation (4)
  • Tape & Reel Specification (1)
    • Document Type

    Product Recommendations

    HMC838 Companion Parts

    Recommended Reference Buffer

    • With integrated filters for improved noise: LTC6957.

    Recommended Reference Clean Up PLL

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    HMC838LP6CE Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm w/ EP)
    HMC838LP6CETR Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm w/ EP)
    Wafer Fabrication Data

    PCN-PDN Information

    Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

    Select Model for PCN Information
    • HMC838LP6CE Last Time Buy
    • HMC838LP6CETR Last Time Buy

    Support & Discussions

    HMC838 Discussions

    RE: 36GHz RF oscillation signal source
    RE: Query
    Hmc829 isolation between analog and digital inside the chip
    All HMC838 Discussions
    HMC838 Contact ADI Technical Support »
    HMC838 Ask your question »
    HMC838 Contact ADI Technical Support » HMC838 Ask your question »

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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