TAT8857

TAT8857 CATV Doubler – Hybrid RFIC Applications     CATV Line Amplifiers CATV System Amplifiers Distribution Nodes Green Applications SOIC-16 Wide Package Product Features       75 Ω, 40 – 1000 MHz Bandwidth GaAs pHEMT & MESFET Technology 21 – 27 dB configurable gain Integrated linearization Flexible bias voltage and current for optimum efficiency SOIC-16 Wide Package Functional Block Diagram General Description The TAT8857 is a cost effective 75 Ω RFIC Amplifier designed for use in Doubler CATV applications up to 1000 MHz. It works with readily available SMT baluns and transformers to provide a highly flexible low cost replacement for traditional hybrids. Gain of the TAT8857 may be easily adjusted by varying external components, allowing for a family of Doubler solutions to be developed from a single RFIC. The TAT8857 provides integrated linearization to improve the 3rd order distortion performance. The TAT8857 may be protected against transient surges with the TQP200002 and an output high pass filter network. Consult TriQuint for discussion. The TAT8857 supports traditional 24 V and 12 V supply voltages. Bias current may be adjusted to suit particular requirements with standard or active biasing approaches. Consult TriQuint for further discussion. Pin Configuration Pin # 1 2 3 4 5 6 7 8 9 Symbol OUT 1A LIN ADJ A IN 1A BIAS 1A BIAS 1B IN 1B LIN ADJ B OUT 1B BIAS 2B Pin # Symbol 10 11 12 13 14 15 16 17 IN 2B OUT 2B GATE B GATE A OUT 2A IN 2A BIAS 2A GND www....