Source/Type: CompoundSemi Online -- Compound Semiconductor Supply Chain News - Reported News

WJ Communications Introduces 5V Gain Block Amplifiers not Requiring External Matching Components
Author: CompoundSemi News Staff

May 7, 2008... WJ Communications, a designer of RF products and solutions for the wireless infrastructure market based in San Jose, California USA, has introduced a +5V active bias InGaP HBT gain block amplifier, the WJA1021. The company contends that the device is among the first 5V gain block amplifiers in the industry that do not require any external matching components.

It offers +37 dBm OIP3 at 2 GHz in a SOT-89 package and is reportedly ideal for general-purpose high linearity applications within the 50 to 4000 MHz frequency range. The new WJ amplifier offers what the company describes as exceptional blend of power, gain, linearity, and supply current performance. At 1.9 GHz, the WJA1021 typically provides 17.5 dB gain, +37.5 dBm OIP3, and +19 dBm P1dB, drawing only 90 mA current from a 5V supply. The amplifier reportedly also works well at the 900 MHz cellular band with 18.5 dB gain, +40 dBm OIP3, and +20 dBm P1dB. The WJA1021 consists of Darlington-pair amplifiers using a high reliability InGaP/GaAs HBT process technology, and is internally matched to 50 ohm. WJ Communications says that the new addition to the WJA family helped to complete selection of cascadable gain blocks that complement different gain, OIP3, and Icc levels. Company News Release

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