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RF Receivers

The TDA8271AHN/C1,557 is an integrated RF receiver designed for operation in the 824MHz-894MHz frequency range and outputting baseband I&Q. It consists of a low noise amplifier (LNA), a down converter, a mixer, a negative IF amplifier, a VCO, an analogue-digital converter and a digital PLL. The TDA8271AHN/C1,557 provides the best-in-class performance in terms of noise figure, gain and selectivity, making it an ideal choice for demanding wireless applications.

Application Fields

The TDA8271AHN/C1,557 is primarily used in radio receiver systems for various wireless applications. They are commonly used in Global System for Mobile Communications (GSM), Digital Enhanced Cordless Telecommunications (DECT) and 3G Universal Mobile Telecommunications System (UMTS) handsets and radio base stations, as well as audio/video transmitters and receivers for short range.In addition, the receiver can be used for the reception of Mobile User Objective System (MUOS), National Tactical Radio (NTR) and other military radio networks, satellite receivers and wireless local area networks (WLAN).

Working Principle

The TDA8271AHN/C1,557 is a fully integrated RF receiver that is designed to be used in the 824MHz-894MHz frequency range. It consists of a low noise amplifier (LNA), a down converter, a mixer, a negative IF amplifier, a VCO (voltage controlled oscillator), an analogue-digital converter, and a digital PLL (phase-locked loop).

The receiver begins with the input signal being amplified by the LNA. The signal is then downconverted and mixed with the local oscillator in the down converter. The output of the down converter is then amplified in the negative IF amplifier before being fed to the analogue-digital converter. The analogue-digital converter then converts the signal to a digital format and the digital PLL is used to keep the signal in phase and in frequency. The digital PLL also provides a stable output signal without any drift.

Finally, the output of the PLL is sent to a digital signal processor that processes the data and prepares it for further transmission or storage.

Conclusion

The TDA8271AHN/C1,557 is an integrated RF receiver designed for operation in the 824MHz-894MHz frequency range and outputting baseband I&Q. It consists of a low noise amplifier (LNA), a down converter, a mixer, a negative IF amplifier, a VCO, an analogue-digital converter and a digital PLL. The receiver is primarily used in radio receiver systems for various wireless applications such as GSM, DECT, and 3G UMTS handsets and radio base stations, as well as audio/video transmitters and receivers for short range.

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