EMI9408MUTAG Filters

Current:	15mA
Height:	0.024" (0.60mm)
Size / Dimension:	0.130" L x 0.053" W (3.30mm x 1.35mm)
Package / Case:	16-UFDFN Exposed Pad
Mounting Type:	Surface Mount
Voltage - Rated:	--
Applications:	Data Lines for Mobile Devices
Operating Temperature:	-40°C ~ 85°C
ESD Protection:	Yes
Values:	L = 70nH (Total), C = 11.5pF (Total)
Series:	Praetorian®
Resistance - Channel (Ohms):	45
Attenuation Value:	35dB @ 800MHz ~ 2.7GHz
Center / Cutoff Frequency:	345MHz (Cutoff)
Number of Channels:	8
Technology:	LC (Pi)
Filter Order:	5th
Type:	Low Pass
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to EMI/RFI Filters for EMI9408MUTAG

Electromagnetic interference (EMI) and radio frequency interference (RFI) are two of the most costly and disruptive forms of signal and power interference. In order to limit their effects, EMI/RFI filters (or LC, RC networks) are used along or in conjunction with pulse-limiting filters. This article will go over the application field and working principle of the EMI9408MUTAG EMI/RFI filter.

Application Field of EMI9408MUTAG Filter

The EMI9408MUTAG is a line-of-sight, low-cost EMI/RFI filter designed for commercial and military applications, including in-flight and airborne electronic systems, RF transmission, outdoor communications systems, GPS and ISM systems, and general purpose EMC applications.The filter has an impedance of 50 ohms, a center frequency of 200 MHz and a bandwidth of 60 MHz. Its operating voltage is 12.7 volts DC and it is rated for a maximum of 10 watts of peak power.

Working Principle of EMI9408MUTAG Filter

The EMI9408MUTAG filter features a dual-stage filter design which helps reduce high frequency noise and undesired RF signals. The low-pass filter stage is designed to block higher frequency noise and prevent its interference with the signal that is being transmitted. The high-pass filter stage is designed to reject all signals below the cutoff frequency and only allow signals within the required frequency range to pass through.The filter also employs a trap circuit which helps minimize the combined effects of out-of-band interference and harmonics within the passband by providing additional filtering at the higher frequency signals. In addition, the filter also features an attenuator which helps to reduce the amplitude of signals which exceeds maximum power levels of the filter.In order to ensure the performance of the filter, it must be installed and used in accordance with manufacturer’s recommendations and standards. This involves careful selection of the correct connector type, ensuring the correct installation of the connector, and completing all shielding and grounding requirements.

Conclusion

The EMI9408MUTAG is a high-quality EMI/RFI filter designed for commercial and military applications. Its dual-stage, low-pass and high-pass filter design, combined with the trap circuit and attenuator, ensure the filter can provide sufficient signal and power integrity. In order to ensure proper performance of the filter, it must be installed and used in accordance with the manufacturer’s recommendations.

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