SI4749-C10-AMR

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The SI4749-C10-AMR is a low-power analog receiver that is part of a family of receivers from Silicon Laboratories, Inc. It is classified as a Radio Frequency (RF) receiver which can be utilized in a variety of applications. This article will discuss the application fields and working principles of the SI4749-C10-AMR RF receiver.

The SI4749-C10-AMR is designed for use in low power applications such as wireless telemetry, wireless medical and health monitoring, industrial sensing, and control applications. It is also suitable for energy efficient audio broadcast, voice modulated radio control and low throughput data radio communication systems. The receiver operates in the 4.7-6 GHz frequency range and has selectable channel bandwidths of 100-200 kHz.

The SI4749-C10-AMR features a highly integrated design which incorporates a low-power analog baseband processor, a low-noise RF amplifier with integrated filters, and a programmable PLL frequency synthesizer. It utilizes advanced receiver technology which allows it to operate with improved selectivity, sensitivity and linearity compared to traditional analog circuits.

The SI4749-C10-AMR provides a high level of performance while consuming low power. It uses forward error correction techniques to reduce the bit error rate of the received signal as well as to reduce overall power consumption. It has a very low noise figure of 4.1 dB which minimizes the bit error rates and provides good signal to noise ratios. Additionally, the device has a high dynamic range of 65 dB and provides good data rejection of strong signal interference.

The SI4749-C10-AMR implements an automatic gain control algorithm to maintain a constant signal-to-noise ratio. The AGC is adjusted through an external loop filter and the output of the AGC is used to control the voltage controlled oscillator (VCO) of the PLL frequency synthesizer. The VCO generates frequencies that are within the desired frequency range of the RF signal and the signal is demodulated with the use of a low-pass filter. The demodulated signal is then fed into the baseband processor which performs the necessary signal conditioning depending on the signal type.

The SI4749-C10-AMR also supports an Enhanced Emission Cancel (EEC) function that helps to reduce interference caused by unwanted emissions. The EEC algorithm uses a combination of notch filters with a variable bandwidth to compensate for frequency and time-domain parts of the unwanted interference. The notch filters reject unwanted emissions in the frequency domain while the variable bandwidth reduces the amplitude of unwanted emissions in the time domain. The EEC algorithm helps to reduce the noise floor of the receiver thus keeping it at an acceptable level for many applications.

The SI4749-C10-AMR is a versatile and highly integrated RF receiver that is suitable for a variety of applications. The low power consumption and high level of performance achieved by using advanced receiver technology makes the SI4749-C10-AMR an ideal solution for applications that require a highly efficient RF receiver. Additionally, the EEC function helps to reduce interference caused by unwanted emission sources, making it suitable for use in even the most challenging of RF environments.

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