HMC444LP4ETR

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HMC444LP4ETR is an active and highly integrated low noise amplifier (LNA) designed for use in receive chains for R/C and wireless communications systems operating up to 4GHz. It combines 40dB of gain, 18dB of linearity, easy matching and selectable gain in a miniature, surface mount package, making it ideal for user applications.

The HMC444LP4ETR is well suited for WiMAX, WLAN, General Remote Control (GPRC), ISM/SRD, cellular wireless, and other applications. It is based on the latest GaAs HBT technology and features excellent noise figure, low power consumption, and superior linearity and gain performance. It also includes integrated, selectable gain and control functions to simplify system design.

In addition, HMC444LP4ETR has a 2.0V to 4.0V supply voltage range and a supply current of only 5.0mA, making it an efficient solution for applications where power savings is important. The pin-out is optimized for easy integration and RF layout. The device is provided in a compact, 7-lead, 2.00mm x 2.00mm x 0.55mm LFCSP package.

The HMC444LP4ETR\'s working principle can be divided into three main parts. The first part is the input matching network, which includes a low noise amplifier based on an Multi-Stage Gain Cell (MGCE) design. This provides a high gain, low noise signal while reconfiguring the circuit for optimal linearity and dynamic range. The second part is the variable gain system, which uses two variable gain control pins to adjust the gain from 0dB to 40dB.

The third part is the output matching circuit, which consists of an impedance-matching transformers to optimize the output performance for the specific application. This helps ensure the highest output power and linearity while minimizing the signal distortion and improving the system\'s overall noise figure. The HMC444LP4ETR offers a gain of 40dB, and Noise Figure of 2.5dB at 2.4 GHz, with a linearity of 18 dBm.

In conclusion, HMC444LP4ETR combines the latest GaAs HBT technology and superior performance to provide an efficient and cost effective solution for a wide variety of applications. It offers a high gain, low noise figure, easy matching and variable gain functions. It\'s small footprint allows for easy system integration, making it an ideal choice for multiple applications.

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