B39458M1872N201

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Surface Acoustic Wave (SAW) Filters are a type of electrical filter that removes unwanted frequencies from a signal with the use of acoustic energy. The B39458M1872N201 is a high-performance SAW Filter designed for use in audio and video applications. In this article, we\'ll explore the application field and working principle of this SAW Filter.

Application Field

The B39458M1872N201 SAW Filter is mainly used in video and audio applications. It is typically used as a flash memory filter for system-on-chip (SoC) devices. As an example, it can be used in digital audio and video products that require radio frequency (RF) and intermediate frequency (IF) filters.

Further applications include multimedia systems, digital TVs, set top boxes, game consoles, digital cameras, portable audio players, and more. The RF/IF SAW filter is also used in the telecommunications industry for equipment like base station transceivers, radio transceivers, and telecom switches.

Working Principle

SAW filters are constructed using piezoelectric technology. A piezoelectric material is a material that creates an electrical charge when it is squeezed or stretched. By using this technology, a thin sheet of piezoelectric material is layered on top of a metal substrate. This creates an electrical oscillation that can be used to filter signals.

The working principle of the B39458M1872N201 SAW Filter is based on the same concept. A thin sheet of piezoelectric material is layered on top of a metal substrate. The layer is then intentionally divided into two distinct sections that are connected by a break. When the electrical voltage is applied to the break, the sheet of material vibrates, creating an acoustic wave. This wave is then used to filter out frequencies that are not within the desired range, leaving behind only wanted signals.

Conclusion

The B39458M1872N201 SAW Filter is used in audio and video applications. It utilises piezoelectric technology to create electrical oscillations that are used to filter out frequencies outside the desired range. SAW filters are increasingly used in modern electronics and telecommunications equipment due to their ability to provide high-performance results.

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