General Description
The TAT2814A is an RFIC for DOCSIS 3.0 Output Sections, such as CMTS and Edge QAM. It combines a low-reflection differential input stage, a variable gain step attenuator and an efficient output amplifier to provide significant reduction in power consumption and PC board space. It replaces circuitry requiring up to 10x the board space and 2x the power.

Product Features
 • Meets DOCSIS 3.0 with +4 dB typical performance margin
 • < 5 Watt nominal power consumption
 • Low-reflection differential input/output stages
 • 18 dB typical return loss across entire gain range
 • Variable gain attenuator: 18 dB typical range
 • 30 dB typical max gain
 • +49 dBm typical OIP3
 • 2.7 dB typical noise figure
 • Typical Input stage bias: 5 V, 290 mA
 • Typical Output stage bias: 8 V, 415 mA

Applications
 • Integrated DOCSIS 3.0 / Edge QAM RF Amplifier chain
 • Forward path 45 – 1003 MHz variable-gain applications