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Technical content

5-300 MHz Variable Gain Return Path Amplifier Data Sheet: Rev F 11/22/12 -1 of 9- Disclaimer: Subject to change without notice © 2012 TriQuint Semiconductor, Inc. Connecting the Digital World to the Global Network®

Applications

  • Return Path Amplifier
  • System Amplifier
  • Line Amplifier
  • DOCSIS Return Path VGA
  • Bonded Channel Cable Modem Return Path 6x6 mm 40 Pin leadless SMT Package Product Features
  • Integrates Attenuation and Amp Functionality
  • 5-300 MHz Performance
  • 75 Ohm
  • Variable gain attenuator: 20 dB typical range
  • Max gain setting: 36 dB typical
  • 15 dB typical return loss across gain range
  • 5 dB typical Noise Figure
  • 40dBm typical OIP3
  • +8 V Supply (Lower supply voltages possible)
  • 320 mA Operating Current
  • Compact 6x6 mm integrated package Functional Block Diagram Backside Paddle GND GND GND RFOUT1 GND GND GND GND RFOUT2 GND GND GND GND GND RFIN1 GND GND RFIN2 GND GND GND V1BYP GND VCC1 GND GND GND GND GND GND V3ADJ V2BYP GND VCC2 GND VCTRL VREF GND GND GND V4ADJ Stage 1A Stage 1B Stage 2A Stage 2B General Description The TAT3814 is a variable gain return path amplifier designed for head-end and system amplifier infrastructure applications. The TAT3814 provides up to 37 dB gain with 20dB automatic gain control capability. 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 s upply 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. Pin Configuration Pin No. Symbol 29-30, 32-37, 39 GND 4 / 7 RFIN1 / RFIN2

11 V2BYP

40 V1BYP

15 VCTRL

16 VREF

20 V4ADJ

31 V3ADJ

Ordering Information

Part No. Description TAT3814 Return path VGA TAT3814-PCB 5-300 MHz Evaluation Board Standard T/R size = 1000 pieces on a 7” x 12mm reel