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ADL5373:  2300 MHz TO 3000 MHz Quadrature Modulator

Product Details

The ADL5373 is a member of the fixed-gain quadrature modulator (F-MOD) family designed for use from 2300 MHz to 3000 MHz. Its excellent phase accuracy and amplitude balance enable high performance intermediate frequency or direct radio frequency modulation for communications systems.

The ADL5373 provides a >500 MHz, 3 dB baseband bandwidth, making it ideally suited for use in broadband zero IF or low IF-to-RF applications and in broadband digital predistortion transmitters.

The ADL5373 accepts two differential baseband inputs that are mixed with a local oscillator (LO) to generate a single- ended output.

The ADL5373 is fabricated using the Analog Devices, Inc. advanced silicon-germanium bipolar process. It is available in a 24-lead, exposed paddle, Pb-free LFCSP. Performance is specified over a −40°C to +85°C temperature range. A Pb-free evaluation board is available.


  • WiMAX/broadband wireless access systems
  • Satellite modems
  • Data Sheet, Rev. A, 2/08


    • Output frequency range: 2300 MHz to
      3000 MHz
    • Modulation bandwidth: >500 MHz (3 dB)
    • 1 dB output compression: 13.8 dBm @ 2500 MHz
    • Noise floor: −157.1 dBm/Hz @ 2500 MHz
    • Sideband suppression: −57 dBc @ 2500 MHz
    • Output third-order intercept: 26 dBm @ 2500 MHz
    • Carrier feedthrough: −32 dBm @ 2500 MHz
    • Single supply: 4.75 V to 5.25 V
    • 24-lead LFCSP

    Functional Block Diagram for ADL5373


    Title Content Type File Type
    ADL5373: 2300 MHz to 3000 MHz Quadrature Modulator Data Sheet (Rev A, 02/2008) (pdf, 826 kB) Data Sheets PDF
    AN-1039: Correcting Imperfections in IQ Modulators to Improve RF Signal Fidelity  (pdf, 202 kB) Application Notes PDF
    AN-0996: The Advantages of Using a Quadrature Digital Upconverter (QDUC) in Point-to-Point Microwave Transmit Systems  (pdf, 219 kB) Application Notes PDF
    AN-924: Digital Quadrature Modulator Gain  (pdf, 105 kB) Application Notes PDF
    AN-826: A 2.4 GHz WiMAX Direct Conversion Transmitter  (pdf, 417 kB) Application Notes PDF
    CN-0019: Interfacing the ADL5373 I/Q Modulator to the AD9779A  (pdf, 127 kB) Circuit Note PDF
    Quadrature Modulator ICs Span 250-MHz to 4-GHz
    (eeProduct Center, 5/8/06)
    Product Reviews HTML
    RF Source Booklet  (PDF, 4353 kB)
    RF IC Product Overview - Version P (02/2014)
    Overview PDF
    Leading Inside Advertorials: Broadband I/Q Modulator Eases Radio Design  (pdf, 69 kB) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    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 ADL5373

    • 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 RF/IF Driver Amplifiers and Gain Blocks for the ADL5373
    • For the full listing of frequency and driving level options, we recommend the ADL5xxx selection table.
    Recommended Differential Dual Baseband TxDAC's for the ADL5373
    • For generating differential I and Q currents up to 125MSPS, we recommend the AD911X pin compatible family of low power, small size, TxDAC's like the AD9117.
    • For even lower power requirements up to 125MSPS, we recommend the pin compatible AD971X family of TxDAC's like the AD9717.
    • For higher bandwidths using data rates up to 250MSPS, with low noise and IMD, we recommend the pin compatible AD974X family of CMOS TxDAC's like the AD9747 or AD9125 if interpolation is required.
    • For direct conversion transmit applications up to 500 MSPS, we suggest the pin compatible AD978X family of LVDS TxDAC's like the AD9783 or AD9122 if interpolation is required.
    Recommended Power Solutions

    • For selecting voltage regulator products, use ADIsimPower.

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    Price, packaging, availability

    ADL5373 Model Options
    Model Package Pins Temp.
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    ADL5373ACPZ-R2 Status: Last Time Buy 24 ld LFCSP (4x4mm w/2.10mm EP) 24 Ind Reel, 250 - - Y  Material Info PCN/PDN Purchase
    ADL5373ACPZ-R7 Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Reel, 1500 - $5.04 Y  Material Info PCN Purchase Sample
    ADL5373ACPZ-WP Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Tray, 64 $5.56 $5.04 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.

    ADL5373 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    ADL5373-EVALZ Status: Production Evaluation Board $100.19 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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