0.6 - 4.2 GHz Low Noise Amplifier

    Key Features

    • 0.6 - 4.2 GHz Operational Bandwidth
    • Ultra-low noise figure, 0.54 dB NF @ 3.5 GHz
    • >20 dB gain across 1.5 to 3.8 GHz
    • Flat 2.4 dB gain variation across 1.7 to 3.8GHz
    • Bias adjustable for linearity optimization
    • 32 dBm OIP3 at 50mA IDD
    • Shut-down mode pin with 1.8V logic
    • Unconditionally stable
    • Integrated shutdown control pin
    • Maintains OFF state with high Pin over drive
    • +3V to +5V single supply; does not require -VGG

    The QPL9057 is a flat-gain, high-linearity, ultra-low noise amplifier in a small 2 x 2 mm surface-mount package. The LNA provides a gain flatness of 2.4 dB (peak-to-peak) over a wide bandwidth from 1.5 to 3.8GHz. At 3.5 GHz, the amplifier typically provides 22.8 dB gain, +32 dBm OIP3 at a 50 mA bias setting, and 0.54 dB noise figure. The LNA can be biased from a single positive supply ranging from 3.3 to 5 volts. The device is housed in a green/RoHScompliant industry-standard 2x2 mm package.

    The QPL9057 is internally matched using a highperformance E-pHEMT process and only requires five external components for operation from a single positive supply: an external RF choke and blocking/bypass capacitors and a bias resistor going to pin 1. This LNA integrates a shut-down biasing capability to allow for operation in TDD applications.

    The QPL9057 is optimized for linear performance across the 1.5 to 4.2 GHz frequency band but can operate down to 600 MHz.

    Typical Applications

      • Repeaters / DAS
      • Mobile Infrastructure
      • LTE / WCDMA / CDMA / GSM
      • General Purpose Wireless
      • TDD or FDD systems
    Frequency Min(GHz) 0.6
    Frequency Max(GHz) 4.2
    Gain(dB) 22.8
    NF(dB) 0.54
    OP1dB(dBm) 17
    OIP3(dBm) 32
    Voltage(V) 5
    Current(mA) 50
    Package Type 8 Pin DFN
    Package(mm) 2 x 2
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No