30 - 2500 MHz Fractional-N Synthesizer with 2 Integrated RF Mixers

    Key Features

    • 30MHz to 2.5GHz Frequency Range
    • Fractional-N Synthesizer
    • Very Fine Frequency Resolution 1.5Hz for 26MHz Reference
    • Low Phase Noise VCO
    • On-Chip Crystal-Sustaining Circuit With Programmable Loading Capacitors
    • Two High-Linearity RF Mixers
    • Integrated LO Buffers
    • Mixer Input IP3 +18dBm
    • Mixer Bias Adjustable for Low Power Operation
    • Full Duplex Mode
    • 2.7V to 3.6V Power Supply
    • Low Current Consumption 55mA to 75mA at 3V
    • 3-Wire Serial Interface

    Qorvo's RF2051 is a very wideband RF frequency conversion chip with integrated local oscillator (LO) generation and a pair of RF mixers. The RF synthesizer includes an integrated fractional-N phase locked loop with voltage controlled oscillators (VCOs) and dividers to produce a low-phase noise LO signal with a very fine frequency resolution. The LO output drives the built-in RF mixers which convert the signal into the required frequency band. The bias current can be programmed to optimize the supply current/performance trade-off. The LO generation blocks have been designed to continuously cover the frequency range from 300MHz to 2400MHz. The RF mixers are very broad band and operate from 100MHz to 2500MHz at the RF ports of the device. An external crystal of between 10MHz and 52MHz or an external reference source of between 10MHz and 104MHz can be used with the RF2051 to accommodate a variety of reference frequency options. The device is programmed using a true three-wire serial interface. The RF2051 is designed for 2.7V to 3.6V operation for compatibility with portable battery powered devices. It is available in a plastic 32-pin 5mm x 5mm QFN package.

    Typical Applications

      • General Purpose Wireless
    Mixer RF Min(MHz) 30
    Mixer RF Max(MHz) 2,500
    Mixer IF Min(MHz) 30
    Mixer IF Max(MHz) 2,500
    LO Min(MHz) 300
    LO Max(MHz) 2,400
    Conversion Gain(dB) -2
    Mixer IIP3(dBm) 18
    Phase Noise @ 2 GHz (1kHz)(dBc/Hz) -90
    Phase Noise @ 2 GHz (10kHz)(dBc/Hz) -90
    Icc(mA) 75
    Package Type QFN
    Package(mm) 5 x 5

    This product appears in the following application block diagrams:

    • Applications > Network Infrastructure > Wireless Infrastructure > Repeaters / Boosters / DAS

      Repeaters / Boosters / DAS

    • Applications > Network Infrastructure > Wireless Infrastructure > LTE-U/LAA Base Station

      LTE-U/LAA Base Station