SF2094B

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Frequency - Center:	380MHz
Bandwidth:	4MHz
Insertion Loss:	13.5dB
Ratings:	--
Applications:	WiMax
Mounting Type:	Surface Mount
Package / Case:	10-SMD, No Lead
Height (Max):	0.079" (2.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)

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SAW Filters: SF2094B application field and working principle

SAW (Surface Acoustic Wave) filters are a kind of electrical device, mainly used for frequency selection, signal separation and frequency discrimination in consumer electronic systems. The SF2094B from Murata is one of the most widely used SAW filters across a wide range of industrial, transportation, and consumer products.The SF2094B is a special type of SAW filter that is characterized by its wide operating temperature range (from -55°C to +85°C) and high frequency selectivity. It is suitable for applications requiring high performance and low power consumption. The SF2094B is designed to filter out noise across an approximate 4% bandwidth centered on the specified center frequency.The SF2094B works by utilizing the acoustic energy that is generated from the vibration of a quartz crystal. This vibrating crystal is connected to a mechanical waveguide, which transmits this acoustic energy to the filter\'s electrodes. Depending on the applied frequency, some of the energy is absorbed and some is reflected. The reflected energy is then converted back to electrical signals and passed through the filter, while the absorbed energy is dissipated as heat.The SF2094B is widely used in a variety of applications such as automotive infotainment systems, RF communication systems, cellular telephones, navigation systems, and wireless data transmitters. It is especially useful in controlling malfunction caused by interference within a system.In order to understand how the SF2094B behaves in real-world applications, it is important to take a look at its frequency response behaviour. This is defined by its Insertion Loss (IL) and Frequency Sensitivity (FS) performance, which are expressed in dB (decibels) and kHz (kilohertz) respectively. The IL indicates the amount of signal attenuation caused by passing energy through the filter, while the FS is the rate at which the filter\'s response changes with frequency, which in turn causes variation in signal attenuation.When the SF2094B is used in a wireless data transmission system, its filter characteristics are important for ensuring quality and consistency. The filter\'s performance at the specified center frequency should be considered, as well as its overall ringing behavior which occurs on either side of the filter\'s passband.Overall, the SF2094B is a highly reliable and efficient filter that provides the required protection against any unwanted invasion of radio signal noise. It is particularly useful for applications that require enough precision in signaling capabilities, yet still have well defined power requirements. With its superior performance, the SF2094B deserves to be given a try for various multimedia applications.

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