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In wireless applications, a low-noise amplifier (LNA) is an active network that increases the amplitude of weak RF signals to allow processing by a receiver. In a receiver chain, the first amplifier after the antenna contributes the most to the system noise figure. Although amplifiers are known to add noise and distortion to the desired signal, RF low-noise amplifiers (RF LNAs) are designed to increase the desired RF signal amplitude without adding distortion or noise.

Low-Noise Amplifiers (LNAs)
Our portfolio of RF LNAs offer best-in-class signal performance including low-noise figures, high linearity, low power, and offer superior specifications in the smallest solution size.
GPS
Our portfolio of GPS low noise amps includes Galileo, GLONASS, GPS L1, L2, and BeiDou to provide broadband navigation system coverage.
Active Antenna
Active antenna low noise amps include features such as automatic gain control (AGC), power detectors, and integrated voltage regulation.

Also see:
Power Amplifiers



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Featured Products

MAX2616 40MHz to 4GHz Linear Broadband Amplifiers
The MAX2612–MAX2616 is a family of high-performance broadband gain blocks designed for use as a ...
  • Extremely Flat Frequency Response
    • < 0.5dB, 1GHz to 4GHz
  • Low Noise Figure: 2.0dB at fRFIN = 2.0GHz
  • 40MHz to 4000MHz Frequency Range
  • Industry's Highest Max PIN Rating
  • Large OIP3 Ranges
    • MAX2615/MAX2616: +37dBm
    • MAX2612: +35.2dBm
    • MAX2613: +31.2dBm
    • MAX2614: +30dBm
  • Output P1dB: +19.5dBm (MAX2615/MAX2616)
  • High Gain: 18.6dB
  • Shutdown Mode (MAX2612/MAX2613/MAX2614/MAX2616)
  • Adjustable Bias Current for Improved OIP3 (MAX2615)
  • 3.0V to 5.25V Supply Range
  • Compact 2mm x 3mm TDFN Package
  • Industry-High ESD Rating: 2.5kV HBM
  • AEC-Q100 Qualified—Refer to Ordering Information for List of /V Parts
MAX2679 GPS/GNSS Ultra-Low Current Low-Noise Amplifiers
The MAX2679 and MAX2679B low-noise amplifiers (LNA) are designed for GPS L1, Galileo, and GLONAS...
  • High Power Gain: 19dB (MAX2679), 16.5dB (MAX2679B)
  • Low Noise Figure: 0.95dB (MAX2679), 1.03dB (MAX2679B)
  • Integrated 50Ω Output Matching Circuit
  • Low Supply Current: 1mA (MAX2679), 650μA (MAX2679B)
  • Wide Supply Voltage Range: 1.08V to 1.98V
  • Low Bill of Materials: One Inductor, Two Capacitors, One Resistor
  • 4-Bump, 0.4mm Pitch WLP, 0.83mm x 0.83mm
MAX2686L GPS/GNSS Low-Noise Amplifiers with Integrated LDO
The MAX2686L /MAX2693L low-noise amplifiers (LNAs) are designed for GPS L1, Galileo, and GLONASS...
  • High Power Gain: 19dB (MAX2686L)
  • Low Noise Figure: 0.88dB (MAX2686L)
  • Integrated 50Ω Output Matching Circuit
  • Low Supply Current: 1.8mA (MAX2693L)
  • Wide Supply Voltage Range: 1.6V to 4.2V
  • Low Bill of Materials: One Inductor, Two Capacitors
  • Small Footprint: 0.86mm x 0.86mm
  • 0.4mm Pitch WLP
MAX2181A FM Automotive Low-Noise Amplifier
The MAX2181A is a highly integrated FM variable-gain low-noise amplifier ideal for use in automo...
  • +5V Supply Voltage
  • Integrated AGC Function Eliminates External Pin Diodes
  • High Dynamic Range
  • Low-Noise, Sub 3dB Noise Figure
  • Low External BOM
  • Small Package (3mm x 3mm TQFN)
  • Integrated Power Detector
MAX2667 GPS/GNSS Ultra-Low-Noise-Figure LNAs
The MAX2667/MAX2669 high-gain, low-noise amplifiers (LNAs) are designed for GPS L1, Galileo, and...
  • 19dB High-Power Gain (MAX2667)
  • Ultra-Low Noise Figure: 0.65dB
  • Integrated 50Ω Output Matching Circuit
  • Low 4.1mA Supply Current (MAX2667)
  • Wide 1.6V to 3.3V Supply Voltage Range
  • Low Bill of Materials: Two Inductors, Three Capacitors, and One Resistor
  • Small Footprint: 0.86mm x 1.26mm
  • Thin Profile: 0.65mm
  • 0.4mm-Pitch Wafer-Level Package (WLP)
MAX2691 L2 Band GPS Low-Noise Amplifier
The MAX2691 low-noise amplifier (LNA) is designed for GPS L2 applications. Designed in Maxim's a...
  • High-Power Gain: 17.5dB
  • Low-Noise Figure: 0.93dB
  • Integrated 50Ω Output Matching Circuit
  • Low Supply Current: 4.3mA
  • Wide Supply Voltage Range: 1.6V to 3.6V
  • Low Bill of Materials: One Inductor, Two Capacitors
  • Small Footprint: 0.86mm x 0.86mm
  • Thin Profile: 0.65mm
  • 0.4mm-Pitch Wafer-Level Package (WLP)

Reference Designs

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MAX2667EVKIT
Lowest noise figure GPS LNA delivers high gain and high linearity in a tiny package.
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MAX2615
High-performance broadband amplifier with exceptional gain flatness in an 8-pin TDFN.