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ADL5387:  30 MHz TO 2 GHz Quadrature Demodulator

Product Details

The ADL5387 is a broadband quadrature I/Q demodulator that covers an RF/IF input frequency range from 30 MHz to 2 GHz. With a NF = 13.2 dB, IP1dB = 12.7 dBm, and IIP3 = 32 dBm @ 450 MHz, the ADL5387 demodulator offers outstanding dynamic range suitable for the demanding infrastructure direct-conversion requirements. The differential RF/IF inputs provide a well-behaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance.

Ultrabroadband operation is achieved with a divide-by-2 method for local oscillator (LO) quadrature generation. Over a wide range of LO levels, excellent demodulation accuracy is achieved with amplitude and phase balances ~0.05 dB and ~0.4°, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of >4 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 <−70 dBc. Differential dc-offsets at the I and Q outputs are <10 mV. Both of these factors contribute to the excellent IIP2 specifications > 60 dBm.

The ADL5387 operates off a single 4.75 V to 5.25 V supply. The supply current is adjustable with an external resistor from the BIAS pin to ground.

The ADL5387 is fabricated using the Analog Devices, Inc. advanced silicon-germanium bipolar process and is available in a 24-lead exposed paddle LFCSP.


  • QAM/QPSK RF/IF demodulators
  • Microwave point-to-(multi)point radios
  • Broadband wireless and WiMAX
  • Broadband CATVs
  • Data Sheet, Rev. 0, 10/07


    • Operating RF frequency
      30 MHz to 2 GHz
    • LO input at 2 × fLO
      60 MHz to 4 GHz
    • Input IP3: 31 dBm @ 900 MHz
    • Input IP2: 62 dBm @ 900 MHz
    • Input P1dB: 13 dBm @ 900 MHz
    • Noise figure (NF)
      12.0 dB @ 140 MHz
      14.7 dB @ 900 MHz
    • Voltage conversion gain > 4 dB
    • Quadrature demodulation accuracy
      Phase accuracy ~0.4°
      Amplitude balance ~0.05 dB
    • Demodulation bandwidth ~240 MHz
    • Baseband I/Q drive 2 V p-p into 200 Ω
    • Single 5 V supply

    Functional Block Diagram for ADL5387

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    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 ADL5387

    • 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 ADL5387
    • 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 ADL5387
    • 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 Power Solutions
    • For selecting voltage regulator products, use ADIsimPower.

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    Price, packaging, availability

    ADL5387 Model Options
    Model Package Pins Temp.
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    ADL5387ACPZ-R2 Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Reel, 250 - - Y  Material Info PCN Purchase
    ADL5387ACPZ-R7 Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Reel, 1500 - $5.28 Y  Material Info PCN Purchase Sample
    ADL5387ACPZ-WP Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Tray, 64 $5.83 $5.28 Y  Material Info PCN Purchase
    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.

    ADL5387 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    ADL5387-EVALZ Status: Production Evaluation Board $150.00 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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