MAX2640EUT-T

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The MAX2640EUT-T is a highly integrated, low-noise, wideband RF amplifier targeted for handheld wireless applications such as cellular phones and wireless LANs. It falls into the category of RF amplifiers and, in fact, is considered one of the most highly integrated low-noise RF amplifiers on the market. It is designed to operate from 900MHz to 2.6GHz while providing 55 dB of gain, +25 dBm of output power, and 10 dB of gain control range.

The MAX2640EUT-T RF amplifier utilizes an innovative architecture and process technology that optimizes both linearity and noise figure. The amplifier has an integrated wideband active bias circuit that senses power supply voltage and temperature to provide the lowest power consumption without sacrificing linearity, making it suitable for battery-powered applications. The amplifier is capable of driving wideband 2.2 dB noise figure passive antennas while operating from 1.8 V DC supply voltage, and an additional gain of 6 dB can be achieved when a low-noise active antennas is used.

The MAX2640EUT-T\'s unique active bias circuit also reduces gain and noise figure over temperature with soft compensation artifacts. It achieves this by increasing the DC bias current to the RF output stage as the temperature increases, while compensating the maximum drain voltage to maintain a constant gate-to-drain voltage. This ensures that the amplifier operates within linearity limits and provides at least +25 dBm of output power over temperature.

The amplifier eliminates the need for any external blocking capacitors, as the high-frequency bypass capacitors (C1 and C2) are integrated between the terminals of the amplifier. These capacitors filter out large signal interference and provide excellent distortion performance. The amplifier also includes an RF output selector pin to choose between an external, active or passive antenna. This allows for optimized linearity, noise figure, and gain control.

The MAX2640EUT-T is very easy to use and provides numerous features to optimize system performance and reduce external component count. It can be used for various Wi-Fi/wireless LAN applications, Bluetooth, GSM, CDMA, CTS, EDGE, HSPA, and WCDMA, and it is also suitable for wideband spectrum sensing and linear spread-spectrum applications. Because of its impressive performance and low power consumption, the MAX2640EUT-T is a highly recommended RF amplifier for any wireless application.

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