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RF2489 Datasheet with Chat AI
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    Hello, Please ask a question about RF2489 Datasheet

  • # Example questions: ➢ What is the approximate total current consumption when using the gps receiver with the lna on and the mixer on?
    ➢ What are the key differences in total current consumption between the 'lna on, mixer preamp on' and 'lna off, mixer preamp off' scenarios for fm signals?
    ➢ How does changing the lna bias setting (ipset=0 vs. ipset=1) impact the input ip3 (dbm) for pcs cdma signals?

  • Part No.RF2489
    ManufacturerRFMD
    Size797 Kbytes
    Pages30 pages
    DescriptionDUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER
    Datasheet Summary with AI

    1. Current Consumption (Important Notes):

    ️· Base Current: All IDC (Instant DC) current numbers include a base circuitry current of 3.5mA.
    ️· TX Buffer: Adding the TX Buffer increases current by 2mA.
    ️· /2 Select: Enabling the /2 Select function adds another 2mA.

    2. Current Consumption (Specific Configurations):


    ️· Cell CDMA:
    - LNA ON, Mixer Preamp ON: 27.5 mA
    - LNA ON, Mixer Preamp OFF: 23.0 mA
    - LNA OFF, Mixer Preamp ON: 23.0 mA
    - LNA OFF, Mixer Preamp OFF: 18.5 mA
    ️· FM: Same current consumption as Cell CDMA (27.5, 23.0, 23.0, 18.5 mA)
    ️· PCS CDMA:
    - LNA ON, Max IIP3, Mixer ON: 29.5 mA
    - LNA ON, Max IIP3, Mixer OFF: 25.0 mA
    - LNA ON, Min IIP3, Mixer ON: 27.5 mA
    - LNA ON, Min IIP3, Mixer OFF: 23.0 mA
    - LNA OFF, Mixer ON: 23.0 mA
    - LNA OFF, Mixer OFF: 18.5 mA
    ️· GPS: 26.0 mA

    3. Performance Metrics (Typical Values):

    The document also provides typical performance metrics like Gain, Noise Figure, and Input IP3 for each standard in different configurations. Here's a condensed overview, focusing on the *best* (highest Gain, lowest Noise Figure, highest Input IP3) values:

    Standard Gain (dB) Noise Figure (dB) Input IP3 (dBm)
    Cell CDMA 25.0 2.1 -7.8
    FM 24.5 2.1 -6.6
    PCS CDMA 26.5 2.2 -9.1
    GPS 32.5 1.7 -15.4

    Important Considerations/Notes:

    ️· Image Filter: Performance data assumes a 3dB image filter insertion loss (except GPS which uses 1.5dB).
    ️· Configuration: Performance significantly depends on LNA and mixer preamp settings.
    ️· VCC: Performance numbers are for VCC = 2.75V.
    ️· IPSET: Numbers represent low current LNA bias setting (IPSET=0).

    1. Current Consumption (Important Notes):

    ️· Base Current: All IDC (Instant DC) current numbers include a base circuitry current of 3.5mA.
    ️· TX Buffer: Adding the TX Buffer increases current by 2mA.
    ️· /2 Select: Enabling the /2 Select function adds another 2mA.

    2. Current Consumption (Specific Configurations):


    ️· Cell CDMA:
    - LNA ON, Mixer Preamp ON: 27.5 mA
    - LNA ON, Mixer Preamp OFF: 23.0 mA
    - LNA OFF, Mixer Preamp ON: 23.0 mA
    - LNA OFF, Mixer Preamp OFF: 18.5 mA
    ️· FM: Same current consumption as Cell CDMA (27.5, 23.0, 23.0, 18.5 mA)
    ️· PCS CDMA:
    - LNA ON, Max IIP3, Mixer ON: 29.5 mA
    - LNA ON, Max IIP3, Mixer OFF: 25.0 mA
    - LNA ON, Min IIP3, Mixer ON: 27.5 mA
    - LNA ON, Min IIP3, Mixer OFF: 23.0 mA
    - LNA OFF, Mixer ON: 23.0 mA
    - LNA OFF, Mixer OFF: 18.5 mA
    ️· GPS: 26.0 mA

    3. Performance Metrics (Typical Values):

    The document also provides typical performance metrics like Gain, Noise Figure, and Input IP3 for each standard in different configurations. Here's a condensed overview, focusing on the *best* (highest Gain, lowest Noise Figure, highest Input IP3) values:

    Standard Gain (dB) Noise Figure (dB) Input IP3 (dBm)
    Cell CDMA 25.0 2.1 -7.8
    FM 24.5 2.1 -6.6
    PCS CDMA 26.5 2.2 -9.1
    GPS 32.5 1.7 -15.4

    Important Considerations/Notes:

    ️· Image Filter: Performance data assumes a 3dB image filter insertion loss (except GPS which uses 1.5dB).
    ️· Configuration: Performance significantly depends on LNA and mixer preamp settings.
    ️· VCC: Performance numbers are for VCC = 2.75V.
    ️· IPSET: Numbers represent low current LNA bias setting (IPSET=0).

    Part No.RF2489
    ManufacturerRFMD
    Size797 Kbytes
    Pages30 pages
    DescriptionDUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER
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