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RF Amplifiers

HMC287MS8E application field and working principle

The HMC287MS8E is a monolithic GaAs MMIC amplifier designed for high dynamic range wideband applications. It provides excellent transmit linearity and is the perfect solution for short to medium range wireless communication systems. This amplifier can be used in any application requiring linear or efficient performance in the 500 MHz to 6 GHz frequency range.

At the heart of the HMC287MS8E is a single-stage amplifier based on GaAs (Gallium Arsenide) technology. The amplifier provides a low noise figure of 2.6 dB and an output power of 45 dBm. The amplifier also features an image reject mixer, which reduces the image rejection to better than 70 dB.

The HMC287MS8E amplifier operates from a single 3.5 V power supply and draws up to 420 mA of current. It is available in two package types: the industry-standard 8-lead surface mount package and the slightly larger 8-lead MMIC balanced amplifier. Both of these packages offer excellent thermal stability and require only minimal shielding.

The HMC287MS8E\'s gain can be adjusted either by changing the supply voltage or using an external negative power source. A digital-controlled potentiometer (DCP) is provided on the PC board to perform this task. This potentiometer controls the gain range from 7 dB to 47 dB. This is quite a large range and allows the user to easily adjust the gain of the amplifier to suit the needs of their application.

The HMC287MS8E is a versatile amplifier that can be used to amplify signals in a wide variety of wireless communication systems. It can be used in satellite TV systems, base station radios, and any other system requiring high dynamic range performance. It is also well suited to WiFi and other short to medium range wireless communication applications.

In conclusion, the HMC287MS8E is an excellent amplifier for wide-band RF applications. Its high dynamic range performance combined with its low noise figure and digital control make it ideal for any system requiring linear and efficient operation over a broad range of frequencies.

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