LTM455DU

Series:	LTM455U
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Frequency:	455kHz Center
Impedance:	1.5 kOhm
Bandwidth:	10kHz
Insertion Loss:	4dB
Filter Type:	AM
Mounting Type:	Through Hole
Package / Case:	Cube, 4-PC Pin
Size / Dimension:	0.276" L x 0.276" W (7.00mm x 7.00mm)
Height (Max):	0.256" (6.50mm)

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Ceramic Filters

Ceramic filters are a type of electronic components used to separate two or more spectral signals based on frequency, phase or impedance. One of the most widely used ceramic filters is the LTM455DU. This article discusses its application fields and working principle.The LTM455DU is a low temperature co-fired ceramic (LTCC) filter designed for radio frequency (RF) applications. It operates in the range of 0.1 to 2.7 GHz and is ideal for use in modern communications systems that require enhanced frequency selectivity. Examples include multi-band handsets, 3G, Wi-Fi, WAN, WIMAX and many other applications that need high-frequency filtering.The working principle of the LTM455DU filter involves combining several circuit stages (transmission lines, inductors and multilayer capacitors) which are placed in different layers within the single LTCC substrate. The physical separation of different circuit elements is what enables the filter to separate two or more independent frequency signals effectively.The advantages of using the LTM455DU filter for RF applications are numerous. It provides excellent performance in terms of insertion loss, amplitude balance, group delay, return loss, selectivity, etc. Its small size allows for easy integration into existing products. It also has low power consumption, which is a great advantage in battery-powered applications.In addition, the LTM455DU ceramic filter is very reliable in operation due to its hermetic sealing in a glass frit. This makes it an ideal choice for applications with stringent operating conditions, such as space and aerospace applications.To sum up, the LTM455DU ceramic filter is an excellent choice for RF applications. It offers excellent performance and reliability, and its small size makes it easy to integrate into existing products. As such, it is an essential component for cellular phones, wireless communication systems and other electronic products.

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