TAT3814 5-300 MHz Variable Gain Return Path Amplifier 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 General Description 31 V3ADJ 32 GND 33 GND 34 GND 35 GND 36 GND 37 GND 38 VCC1 39 GND 40 V1BYP GND 1 30 GND GND 2 29 GND GND 3 RFIN1 4 GND 5 GND 6 28 RFOUT1 Stage 1A Stage 2A Stage 1B Stage 2B 27 GND 26 GND 25 GND 9 22 GND GND 10 21 GND V4ADJ 20 24 GND GND 19 23 RFOUT2 GND GND 18 8 GND 17 GND VREF 16 7 VCTRL 15 RFIN2 GND 14 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 V2BYP 11 • • • • • • • • • • • Functional Block Diagram VCC2 13 Product Features GND 12 • • • • • Backside Paddle GND Pin Configuration 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 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. Pin No. Symbol 1-3, 5-6, 8-10, 12, 14, 17-19, 21-22, 24-27, 29-30, 32-37, 39 GND 4/7 11 40 RFIN1 / RFIN2 V2BYP V1BYP 13 / 38 VCC2 / VCC1 15 VCTRL 16 VREF 20 V4ADJ 23 / 28 RFOUT2 / RFOUT1 31 V3ADJ Backside Paddle GND Ordering Information Part No. TAT3814 TAT3814-PCB Description Return path VGA 5-300 MHz Evaluation Board Standard T/R size = 1000 pieces on a 7” x 12mm reel Data Sheet: Rev F 11/22/12 © 2012 TriQuint Semiconductor, Inc. -1 of 9- Disclaimer: Subject to change without notice ® Connecting the Digital World to the Global Network