SI4629-A10-GM

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Part Status:	Active

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Overview

The SI4629-A10-GM is a member of RF receivers from Silicon Laboratories. It is a high performance General Market (GM) version of the silicon RF receiver family. The SI4629-A10-GM is designed to receive standard FM radio transmissions in the 76 to 108 MHz frequency range. The receiver includes numerous features to enhance reception of a wide variety of signal environments. It is optimized for receiving analogue FM in an automotive environment and has the ability to detect Digital Radio Mondiale (DRM) signals as well.

Features

The SI4629-A10-GM has some key features that make it ideal for an automotive radio receiver application: • High selectivity: It has a very high selectivity and wide reception range that can beCustomized to fit the requirements of specific applications and geographical locations;• Very low noise figure: It has an extremely low noise figure to improve reception sensitivity; • High sensitivity: It has a high sensitivity that can detect weak signals and also makes it more effective in crowded spectrum environments; • RDS capabilities: It is able to detect and decode Radio Data System (RDS) signals;• Powerful AGC: It has a powerful automatic gain control (AGC) to keep the input level at a constant level regardless of the incoming signal strength;• High separation: It has highly sensitive audio outputs with a high separation that reduces cross-talk and other interfering signals.• Temperature qualification: It is qualified to meet the highest industry standards for temperature extremes.

Applications

The SI4629-A10-GM is used in many automotive applications including car radio receivers, vehicle audio equipment, and radio accessories. It is used to create a standalone radio receiver that can be used in a car, truck, or other vehicle, as well as being used to create add-on radio receivers for existing vehicle systems. It is also used in applications such as in-dash and overhead navigation systems, satellite receivers, GPS systems, and other audio/video applications.

Working Principles

The working principle of the SI4629-A10-GM is very simple. Firstly, a signal is picked up by the coil antenna, which then passes through the circuit and is amplified by the RF amplifier and the mixer. Then it is sent to a bandpass filter to remove the unwanted out-of-band signals and to further amplify the in-band signal. The signal is then down-converted to a frequency that can be processed by the baseband circuit. In the baseband circuit, the signal is amplified by the IF amplifier and then sent to the discriminator, where it is demodulated and converted to a baseband audio signal. This signal is then further amplified and filtered and sent to the audio output. At the same time, the RDS data is sent to the RDS decoder, where it is decoded and sent to the RDS output. Finally, the signal is sent to the AGC circuit, which keeps the input level at a constant level regardless of the incoming signal strength.

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