SI4749-C10-GMR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Frequency:	76MHz ~ 108MHz
Sensitivity:	--
Data Rate (Max):	--
Modulation or Protocol:	FM
Applications:	Automotive Audio
Current - Receiving:	24mA
Data Interface:	PCB, Surface Mount
Memory Size:	--
Antenna Connector:	PCB, Surface Mount
Features:	--
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Package / Case:	24-VFQFN Exposed Pad
Supplier Device Package:	24-QFN (4x4)
Base Part Number:	--

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RF Receivers: SI4749-C10-GMR Application Field and Working Principle

The SI4749-C10-GMR is an application-specific RF receiver focused on digital low-IF Green Mountain Radio applications. It is a single-chip digital radio receiver integrated with advanced signal processing, DSP, and EDGE technologies. This receiver has been optimized for both low-band and high-band FM broadcast performance, and also features excellent sensitivity, selectivity, blocking immunity and low noise figure.

Applications

This receiver can be used for a variety of applications, including car audio systems, portable radios, cell phones, audio gathering systems, navigation systems, and home theater systems. This receiver is designed specifically for low-IF FM broadcast receivers, allowing for better performance for digital radio applications.

Technical Specifications

The SI4749-C10-GMR receiver supports all worldwide FM broadcast standards, including U.S. and European, as well as Japanese standards. It features low current consumption and fast settling time. The overall performance of the receiver is excellent, with a noise figure of 0.45 dB, blocking immunity of 65 dB, and a selectivity of roughly 55 dB.

Working Principle

The SI4749-C10-GMR receiver operates by initially amplifying the incoming radio waves, before the signal passes through the receiver\'s filters, and digital signal processor. During this process, any interfering signals are reduced or eliminated; this allows the desired signal to pass through to the next stage of processing.During signal processing, the amplified signal is then digitally demodulated. This process is designed to effectively extract readable information from the incoming signals. Once the signal information has been extracted, the receiver is able to determine both its frequency and modulating signal, and then, depending on the type of signal it has received, it can decode that information into an audio, video, or data signal.

Conclusion

The SI4749-C10-GMR is a dedicated receiver for digital FM radio applications. It provides excellent performance, and has been optimized for applications such as car audio systems, portable radios, cell phones, audio gathering systems, navigation systems, and home theater systems. This receiver operates by amplifying the incoming signal, filtering out interfering signals, and then extracting readable information from the signal before decoding it into an audio, video, or data signal.

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