5 - 300 MHz Variable Gain Return Path Amplifier

Part # TAT3814


Key Features

  • Integrates attenuation and amp functionality
  • 5-300 MHz performance
  • 75 Ohm
  • Variable gain attenuator: 20dB typical range
  • Max gain setting: 36dB typical
  • 15dB typical return loss across gain range
  • 5dB noise figure
  • 40dB or better OIP3 across 5-300 MHz
  • +8 V Supply
  • 325mA operating current
  • Compact 6x6 mm integrated package


The TAT3814 is a variable gain return path amplifier designed for head-end and system amplifier infrastructure applications. The TAT3814 provides up to 36dB gain with 20dB automatic gain control capability. It supports DOCSIS 3.0 channel bonding applications.

The small size, 6x6 mm, and efficient power dissipation, nominal 2.5 watts, provide an ideal solution for high density head-end applications and compact system amplifiers.

Standard supply voltage for the TAT3814 is +8V.  Operation from lower supply voltages is possible.  Contact TriQuint CATV applications for guidance.

The TAT3814 is fabricated using 6-inch GaAs pHEMT and HBT technologies to optimize performance and cost-effectiveness.


Frequency (MHz) 5 to 300
Attenuation Range (dB) 20
Gain (dB) 36
P1dB (dBm) 26
Output IP3 (dBm) 40
NF (dB) IRL 15, ORL 20
Voltage (V) 8
Current (mA) 320
Package (mm) 6 x 6
RoHS  Yes
Lead Free  Yes
Halogen Free  Yes

Product Documents

Additional Information

Status Production