High-linearity analogue variable-gain amplifier

July 27th, 2012, Published in Articles: EngineerIT

The Max 2092 high-linearity analogue variable-gain amplifier (VGA) is a monolithic SiGe BiCMos attenuator/amplifier/error amplifier with an alarm circuit designed to interface with 50 Ω systems operating in the 700 MHz to 2700 MHz frequency range. The device features a gain range of 18,1 dB to -22,3 dB, a noise figure of 5,2 dB, OIP3 linearity of +32,5 dBm, and a wide RF bandwidth. Each of these features makes the device an ideal VGA for numerous receiver and transmitter applications. When paired with the Max 2091 or Max 2091B variable gain upconverter, a complete two-chip IF-RF signal conditioning solution is possible for microwave point-to-point transmitters. The amplifier operates from a single +5 V supply, and is available in a compact 20-pin TQFN package (5 x 5 mm) with an exposed pad. Electrical performance is guaranteed over the extended temperature range from TC = -40°C to +95°C.

Contact Michelle De Freitas Parreira, CST Electronics, Tel 011 608-0070,
mparreira@cstelectronics.co.za

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