Broadband LNA/Linear Driver 0.1 – 3.8 GHz

The GRF4003 is a broadband, low noise gain block designed for small cell, wireless infrastructure and other high performance applications. It exhibits outstanding broadband NF, linearity and return losses over 700 to 3800 MHz with a single match.

Configured as a first stage LNA, linear driver or cascaded gain block, GRF4003 offers high levels of reuse both within a design and across platforms. The device is operated from a supply voltage of 1.8 V to 5.5 V with a selectable Iddq range of 30 to 100 mA for optimal efficiency and linearity.

GRF4003 is internally matched to 50 Ω at the input and output ports, needing only external DC blocks and a bias choke on the output.

Consult with the GRF applications engineering team for application notes and custom tuning/evaluation board data.


  • Linear Driver Amp for High PAR waveforms such as LTE and WCDMA
  • Small Cells and Cellular Repeaters
  • First Stage LNA
  • Microwave Backhaul
  • Low Voltage Radios


  • 0.7 GHz to 3.8 GHz (Single Match)
  • NF: 0.75 dB @ 2.5 GHz
  • Gain: 13.0 dB @ 2.5 GHz
  • OIP3: +41.0 dBm @ 2.5 GHz
  • OP1dB: +25.0 dBm @ 2.5 GHz
  • Exceptional Low Voltage Linearity
  • Flexible Bias Voltage and Current
  • Internally Matched to 50 Ω

Manufacturing Information


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