MAX2658EWT+T

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RF amplifiers are a type of amplifier that is used to enhance the power of an electromagnetic signal. In simple terms, it increases the amplitude of the signal. While the term "RF amplifier" can be applied to any type of amplifier that amplifies radio signals, it is most commonly used to refer to amplifiers used in the radio frequency (RF) range of the electromagnetic spectrum. Stationary, fixed-frequency amplifiers are typically used in radio and television systems, while variable-frequency amplifiers are used in telecommunications and radar systems.

The MAX2658EWT+T is a high-performance, high-linearity RF power amplifier with a typical power gain of 10.8 dB and a maximum gain of 13 dB. This amplifier is designed for a wide range of applications that require high linearity, including cellular base stations, Wi-Fi, Zigbee, and RFID systems, as well as other applications. The amplifier has a typical power-added efficiency (PAE) of up to 26% and a typical output power of +27.8dBm, with an output power level that can be adjusted over a wide range.

The MAX2658EWT+T is a Doherty-style amplifier that is optimized for use with a wide range of amplifier technologies, including single-ended, push-pull, and cascode. It is an effective solution for applications such as digital TV broadcast, single-carrier digital TV broadcast, and digital audio broadcasting that require high gain, linearity, and efficiency. The amplifier is also ideal for hands-free devices that require high drain-source voltage (VDS) and low noise.

The working principle of the MAX2658EWT+T is based on a dual-directional Doherty architecture. In this architecture, the amplifier is composed of two amplifiers connected in parallel. The main amplifier is used for signal amplification and the pilot amplifier is used for power management. The action of the two amplifiers is dependent on the pilot tone. When the tone is low, the main amplifier will provide most of the gain. When the tone is high, the pilot amplifier will provide most of the gain. This ensures that the output power is optimized for high-gain and low power-consumption.

In addition to the excellent linearity and efficiency, the MAX2658EWT+T also offers a wide range of features that make it highly suitable for RF amplifier applications. It has an integrated temperature-compensated automatic gain control circuit that significantly reduces the effect of temperature changes on gain and phase shift. The amplifier also has a built-in inverse RFI filter and an integrated power detector to ensure that the signal is not affected by interference. It also has high input power capability, which allows it to support signals from weak to strong.

Overall, the MAX2658EWT+T is an excellent choice for RF amplifier applications that require high linearity and efficiency. Its Doherty-style architecture ensures that it is highly efficient, while its temperature-compensated automatic gain control, inverse RFI filter, and integrated power detector make it ideal for use in systems where interference is a concern. In addition, its wide input power capability makes it ideal for a variety of applications that require high gain and low power consumption.

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