BNX026H01L Filters

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EMI/RFI filters are designed to reduce the amount of electromagnetic interference (EMI) and radio frequency interference (RFI) that can affect a system\'s performance. Among of the common EMI/RFI filter configurations are LC and RC networks. LC or inductive-capacitive networks consist of an inductor (L) in series with a capacitor (C), while RC or resistive-capacitive networks combine a resistor (R) with a capacitor (C). The BNX026H01L is an example of an EMI/RFI filter that utilizes an LC network to provide EMI/RFI suppression.

Application Field

The BNX026H01L provides EMI/RFI filtering at frequencies up to 500MHz and is designed to be used in digital communication systems, such as cellular infrastructure, high-definition multimedia interface (HDMI) and baseband/packet-based equipment, as well as industrial and medical devices. It is also suitable for use in automotive applications due to the device\'s robust design and -40°C to +125°C operating temperature range. Furthermore, the device\'s low profile package ensures easy integration on custom substrates and PCBs in space-critical applications.

Working Principle

The BNX026H01L utilizes an inductor-capacitor network, which helps to attenuate EMI and RFI signals in the frequency range of 15MHz to 500MHz. A series inductor is used to suppress high frequency EMI/RFI, while a parallel capacitor is employed to provide noise bypassing between the input and output. The capacitor\'s high series inductance is responsible for low inductive loading, which further reduces EMI/RFI interference within the operating range. The device is also designed to inhibit inductive and capacitive coupling, which helps to minimize signal degeneration. Additionally, the BNX026H01L incorporates a symmetrical layout that reduces impedance discontinuities and provides enhanced stability in high frequency applications.

The BNX026H01L is also equipped with a high-impedance line termination that is designed to improve the device\'s noise suppression performance. This effectively reduces the amount of EMI and RFI interference that can be injected into external circuitry by providing a low impedance path to ground. The device\'s output line termination is optimized to minimize reflection, which further reduces EMI/RFI attenuation.

Conclusion

The BNX026H01L is an example of a high frequency EMI/RFI filter that utilizes an LC network to provide EMI/RFI suppression. It is designed to be used in digital communication systems, such as cellular infrastructure, high-definition multimedia interface (HDMI) and baseband/packet-based equipment, as well as industrial and medical devices. Additionally, the BNX026H01L is equipped with a high-impedance line termination that is designed to improve the device\'s noise suppression performance, and its symmetrical layout and low inductive loading help to reduce impedance discontinuities and provide enhanced stability in high frequency applications.

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