RF5626

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RF amplifiers are a type of amplifier that is used to amplify radio frequency signals. They are often used in radio and television broadcasting, as well as for short-range communications over the airwaves. The RF5626 is a type of RF amplifier designed to meet the needs of wireless applications. It is a low-noise, high-power, bipolar transistor amplifier with an integrated test-capable temperature compensation circuit. This article will discuss the application field and working principle of the RF5626.

Application Field

The RF5626 is primarily used in applications that require a high level of linearity and low-noise performance. It is designed to be used in high-power multi-carrier and single-carrier base stations, point-to-point applications, broadcast and satellite communications, fixed and mobile wireless communication systems, test equipment, and instrumentation. The device is also suitable for CDMA, TDMA, FDMA, and WCDMA systems.

The RF5626 is sold in two packages: QFN and LGA. The QFN package provides a standard lead frame that is mounted on the printed circuit board. The LGA has a leadless package design and can be placed directly on the board.

Working Principle

The RF5626 is a bipolar low-noise amplifier (LNA) designed for use in cellular, PCS, and ISM applications. It uses a direct current (DC) bias circuit and a two-stage trans-conductance transimpedance amplifier (TCTA) configured to produce a transistor power gain of ~ 19 dB. The RF5626 is designed to have 15dB of input and output return loss, and a small signal input and output impedance variation of less than 2.5%.

The RF5626 employs an integrated temperature compensation circuit to maintain a constant gain over a temperature range of -40°C to +85°C . This temperature compensation circuit provides temperature stability and improved non-linearity. The temperature compensated gain varies from 18dB to 22dB. The DC power supply current varies from 85mA to 125mA and the noise figure is 4.5dB at room temperature.

The RF5626 is designed to operate in a wide range of ambient temperatures. It is used in applications with a frequency range of 806MHz to 960MHz and a power output of up to 31dBm. The RF5626 is designed to be used with an external filter for improved linearity. The device also employs a selectable noise figure of 2.5dB or 4.5dB.

Conclusion

In conclusion, the RF5626 is a low-noise, high-power bipolar transistor amplifier with integrated test-capable temperature compensation circuit. It is designed for use in wide range of wireless applications such as cellular, PCS, broadcast and satellite communications, and test equipment. The device employs an integrated temperature compensation circuit, has an output power of up to 31dBm, and a noise figure of 2.5dB or 4.5dB.

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