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ADL5380:  400 MHz TO 6000 MHz Quadrature Demodulator

Product Details

Product Status:Recommended for New Designs

The ADL5380 is a broadband quadrature I-Q demodulator that covers an RF/IF input frequency range from 400 MHz to 6 GHz. With a NF = 10.9 dB, IP1dB = 11.6 dBm, and IIP3 = 29.7 dBm @ 900 MHz, the ADL5380 demodulator offers outstanding dynamic range suitable for the demanding infrastructure direct-conversion requirements. The differential RF inputs provide a well-behaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance.

Excellent demodulation accuracy is achieved with amplitude and phase balances of ~0.07 dB and ~0.2°, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of ~7 dB. The buffered baseband outputs are capable of driving a 2 V p-p differential signal into 200 Ω.

The fully balanced design minimizes effects from second-order distortion. The leakage from the LO port to the RF port is <−50 dBm. Differential dc offsets at the I and Q outputs are typically <20 mV. Both of these factors contribute to the excellent IIP2 specification, which is >65 dBm.

The ADL5380 operates off a single 4.75 V to 5.25 V supply. The supply current is adjustable by placing an external resistor from the ADJ pin to either the positive supply, VS, (to increase supply current and improve IIP3) or to ground (which decreases supply current at the expense of IIP3).

The ADL5380 is fabricated using the Analog Devices, Inc., advanced silicon-germanium bipolar process and is available in a 24-lead exposed paddle LFCSP.

Applications

  • Cellular W-CDMA/GSM/LTE
  • Microwave point-to-(multi)point radios
  • Broadband wireless and WiMAX
  • FEATURES and BENEFITS

    • Operating RF and LO frequency: 400 MHz to
      6 GHz
    • Input IP3
      30 dBm @ 900 MHz
      28 dBm @1900 MHz
    • Input IP2: >65 dBm @ 900 MHz
    • Input P1dB (IP1dB): 11.6 dBm @ 900 MHz
    • Voltage conversion gain: ~7 dB
    • Demodulation bandwidth: ~390 MHz
    • Noise figure (NF)
      10.9 dB @ 900 MHz
      11.7 dB @ 1900 MHz
    • Quadrature demodulation accuracy @
      900 MHz
      Phase accuracy: ~0.2°
      Amplitude balance: ~0.07 dB
    • Baseband I/Q drive: 2 V p-p into 200 Ω
    • Single 5 V supply

    Functional Block Diagram for ADL5380

    Documentation

    Title Content Type File Type
    ADL5380: 400 MHz to 6 GHz Quadrature Demodulator Data Sheet (Rev A, 07/2013) (pdf, 833 kB) Data Sheets PDF
    CN-0245: Wideband LO PLL Synthesizer with Simple Interface to Quadrature Demodulators  (pdf, 422 kB) Circuit Note PDF
    Semiconductors Simplify Direct-Conversion Design
    Advances in semiconductor processes have enabled integrated circuits with the performance needed for wireless infrastructure direct-conversion receivers for multimode communications systems.
    (Microwaves & RF, 3/2010)
    Technical Articles HTML
    Direct Conversion Receiver Designs Enable Multi-standard/Multi-band Operation
    Modern direct conversion provides a compelling solution for field programmable radio designs and offers a cost benefit and potential performance advantage over traditional receiver solutions.
    (RF Designline, 2/16/2009)
    Technical Articles HTML
    Assess Quadrature-Demodulator Noise Figure Using Vector Signal Analysis
    A VSA approach is a reasonable and qualitative solution for assessing the demodulator noise figure at the baseband.
    (Microwaves & RF, 11/20/2008)
    Technical Articles HTML
    Semiconductors Simplify Direct-Conversion Design
    Advances in semiconductor processes have enabled integrated circuits with the performance needed for wireless infrastructure direct-conversion receivers for multimode communications systems.
    (Microwaves & RF, 3/2010)
    Technical Articles HTML
    New PLLs Deliver Widest Frequency Range Coverage and Lowest VCO Phase Noise in a Single Device (03 Jun 2014) Press Releases HTML
    RF Source Booklet  (PDF, 4353 kB)
    RF IC Product Overview - Version P (02/2014)
    Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    ADIsimRF
    ADI’s ADIsimRF design tool provides calculations for the most important parameters within the RF signal chain, including cascaded gain, noise figure, IP3, P1dB, and total power consumption.
    ADIsim Design/Simulation Tools HTML
    ADIsimPLL™- Version 3.60.10
    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.
    ADIsim Design/Simulation Tools HTML

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    Product Recommendations & Reference Designs

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    Companion Products

    Suggested Companion Products


    Recommended PLL's for the ADL5380

    • For high performance with integrated VCO, we recommend the ADF4350.
    • For lower cost, power and size with integrated VCO, we recommend the ADF4360-X family of fixed frequency PLL's.
    • For higher performance, higher frequency and faster locktimes, we recommend the discrete Integer-N, ADF4106 or the discrete Fractional-N, ADF4156.
    Recommended Baseband Driver Amplifiers for the ADL5380
    • For low noise drivers in low voltage (1.8V) ADC applications, we recommend the ADA4930-1 or the dual ADA4930-2.
    • For selectable gains of 1, 2 or 3, we recommend the low cost, low power ADA4950-1 or the dual ADA4950-2.
    • For a digital programmable VGA, we recommend the AD8366.
    • For a differential RF/IF amplifier, we recommend the ADL5562 or the ADL5565.
    • For variable gain and programmable baseband filters, we recommend the ADRF6510 or the ADRF6516.
    Recommended Dual Analog-to-Digital Converters for the ADL5380
    • For 16-bit performance, low power and high sampling rate, we recommend the AD9268 or AD9650.
    • For 14-bit performance, low power and high sampling rate, we recommend the AD9258 or AD9251.

    • For 12-bit performance, low power, low cost and ease of use, we recommend the AD9231.
    • For 16-bit performance, multistage differential pipeline architecture with integrated quadrature error correction (QEC), we recommend the AD9269.
    • For 16-bit performance, continuous time sigma delta architecture with integrated QEC, we recommend the AD9262.
    Recommended Low-Noise Voltage Regulators for the ADL5380
    • For a fixed 5V, 500mA low dropout regulator with reverse current protection, we recommend the ADP7104.
    Recommended Power Solutions
    • For selecting voltage regulator products, use ADIsimPower.

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    Price, packaging, availability

    ADL5380 Model Options
    Price Table Help

    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    AD-FMCOMMS6-EBZ Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD-FMCOMMS6-EBZ Status: Production Evaluation Board $650.00 Yes -
    ADL5380 Evaluation Boards
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    ADL5380-EVALZ Status: Production Evaluation Board $100.00 Yes -

    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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