Features and Benefits

  • High performance, low power, narrow-band transceiver
  • Enhanced performance ADF7021-N with external VCO
  • Frequency bands using external VCO: 80 MHz to 960 MHz
  • Improved adjacent channel power (ACP) and adjacent channel rejection (ACR) compared with the ADF7021-N
  • Programmable IF filter bandwidths:
    9 kHz, 13.5 kHz, and 18.5 kHz
  • Modulation schemes: 2FSK, 3FSK, 4FSK, MSK
  • Spectral shaping: Gaussian and raised cosine filtering
  • Data rates: 0.05 kbps to 24 kbps
  • Power supply: 2.3 V to 3.6 V
  • See data sheet for additional Features

Product Details

The ADF7021-V is a high performance, low power, narrow-band RF transceiver based on the ADF7021-N. The architecture of the ADF7021-V transceiver is similar to that of the ADF7021-N except that an external VCO is used by the on-chip RF synthesizer for applications that require improved phase noise performance.

The ADF7021-V is designed to operate in both the license-free ISM bands and in the licensed bands from 80 MHz to 960 MHz.

To minimize RF feedthrough and spurious emissions, the external VCO operates at 2× or 4× the desired RF frequency; the ADF7021-V supports a maximum VCO frequency operation of 1920 MHz. The 4× VCO operation is programmable by enabling an additional on-chip divide-by-2 outside the RF synthesizer loop and offers improved phase noise performance.

As with the ADF7021-N receiver, the IF filter bandwidths of 9 kHz, 13.5 kHz, and 18.5 kHz are supported, making the ADF7021-V ideally suited to worldwide narrow-band telemetry applications.

The part has both Gaussian and raised cosine transmit data filtering options to improve spectral efficiency for narrow-band applications. It is suitable for circuit applications targeted at the following:

  • European ETSI EN 300 220
  • North American FCC Part 15, Part 90, and Part 95
  • Japanese ARIB STD-T67
  • Korean short-range device regulations
  • Chinese short-range device regulations
  • A complete transceiver can be built using a small number of discrete external components, making the ADF7021-V very suitable for area-sensitive, high performance driven applications.

    See data sheet for more information.


    • Narrow-band, short range device (SRD) standards
            ETSI EN 300 220
            FCC Part 90 (meets
            Emission Mask D requirements)
            FCC Part 95
            ARIB STD-T67
    • Wireless Metering
    • Narrow-band wireless telemetry

    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 (1)

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    ADIsimSRD Design Studio

    Analog Devices ADIsimSRD Design Studio is a very powerful tool allowing real-time simulation and optimization of many of the parameters in a typical wireless system using the ADF7xxx family of transceivers and transmitters.

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    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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    ADF7021-V Discussions

    RE: Can't handle interrupts in no-OS
    1 day(s) ago in FPGA Reference Designs
    RE: libad9361-iio FMCOMMS5
    1 day(s) ago in Software Interface Tools
    RE: AD9082 TMU_REFP incorrect connection on the EVM?
    2 day(s) ago in Signal Front Ends (MxFE)

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