SI4755-A30-AMR

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The SI4755-A30-AMR is an integrated RF receiver that is used to control the reception of wireless signals from short range devices (SRDs), such as remote controls, cordless phones, security systems, etc. It is specifically designed to be used in SRD-controlled applications and provides a wide range of features and options that can be tailored to meet the requirements of these applications.

The SI4755-A30-AMR receiver was designed for frequency operation from 4 to 30 MHz and provides high sensitivity, linearity, and noise rejection. It is also capable of supporting high data rates for voice communications. Additionally, the receiver provides advanced features such as signal power detection, frequency hopping, and digital frequency control (DFC) for improved reliability and performance in SRD applications.

The receiver is based on a direct conversion architecture, meaning that it does not require any intermediate frequency (IF) stages. Instead, it directly converts the received RF signal to baseband frequency. This eliminates the need for additional amplification and filtering stages that are present in traditional receivers, resulting in higher levels of sensitivity, linearity, and noise rejection. Additionally, direct conversion receivers do not require expensive external components, making them suitable for cost-sensitive applications.

The SI4755-A30-AMR receiver works by first amplifying the received signal with low-noise amplifiers (LNAs) then converting it to the baseband frequency. Once at baseband, it is then filtered and demodulated by a digital signal processor (DSP). The DSP is capable of detecting and locking onto various communication protocols, as well as performing other signal processing functions. The output of the DSP is then forwarded to the device’s microcontroller, which is used to control the system’s operation.

The SI4755-A30-AMR receiver is a compact, low-cost, and highly integrated RF receiver solution for use in various SRD applications. It is capable of providing high levels of performance while requiring minimal external components and offering a wide range of features and customization options. With its direct conversion architecture, the receiver is an ideal solution for cost-sensitive applications, as well as for applications that require high levels of sensitivity, linearity, and noise rejection.

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