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

Product Details

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.


  • Cellular W-CDMA/GSM/LTE
  • Microwave point-to-(multi)point radios
  • Broadband wireless and WiMAX
  • 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 (3)

    Tools & Simulations

    Design Tools


    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.


    ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

    Reference Designs (3)

    Product Recommendations

    ADL5380 Companion Parts

    Recommended Baseband Driver Amplifiers

    Recommended Dual Analog-to-Digital Converters

    • For 12-bit performance, low power, low cost and ease of use: AD9231.
    • For 14-bit performance, low power and high sampling rate: AD9258, AD9251.
    • For 16-bit performance, continuous time sigma delta architecture with integrated QEC: AD9262.
    • For 16-bit performance, low power and high sampling rate: AD9268, AD9650.
    • For 16-bit performance, multistage differential pipeline architecture with integrated quadrature error correction (QEC): AD9269.

    Recommended PLL's

    • For high performance with integrated VCO: ADF4350.
    • For higher performance, higher frequency and faster locktimes: ADF4106, ADF4156.

    Recommended Low-Noise Voltage Regulators

    • For a fixed 5V, 500mA low dropout regulator with reverse current protection: ADP7104.

    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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    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.