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FMER-G92Z-T357 application field and working principle

The FMER-G92Z-T357 is a Power Line Filter Module designed by ADI to meet specific system requirements. It is a small PCB assembly consisting of a series of capacitors, inductors, and extrusions designed to reduce EMI noise levels associated with high density, high frequency data signals.

The FMER-G92Z-T357 is a shielded line filter with two complete filter stages. The first stage removes common mode noise for data rates up to 250 Mbps. The second stage filters out differential mode noise, providing better protection against inductive noise sources. The FMER-G92Z-T357 has an operating temperature range of -55C to 125C.

This filter is ideal for applications that demand superior quality, performance, and reliability such as network backbone routers, local area networks, industrial networks, automotive networks, cellular networks, and embedded systems.

The working principle behind the FMER-G92Z-T357 is quite simple: Figure 1 shows how the capacitors, inductors, and extrusions come together to create a low impedance line filter. The filter works by dividing the signal into two components: the common mode and the differential mode. The common mode components are passed through the capacitor and inductor combination, which blocks them from entering the system while attenuating any unwanted noise on the lines. The differential mode components pass through the extrusions, which reduce any differential mode noise on the lines.

Figure 1: Overview of FMER-G92Z-T357 Filter

At the heart of the filter are the capacitors, inductors, and extrusions. The capacitors are essential components of a low pass filter as they allow direct current to pass through while blocking AC current. The inductors, on the other hand, block direct current while allowing AC current to pass through. The combination of the components create an LC filter, which has both common mode and differential mode blocking capabilities.

The extrusions are responsible for reducing any noise on the output lines, and are designed to have high common mode noise rejection. This means that any noise that is generated in the system due to a malfunction or external interference will be significantly attenuated before it reaches the output lines.

The FMER-G92Z-T357 is a versatile filter designed to work in a wide variety of applications. The filter is resistant to both common and differential mode noise, and provides superior noise attenuation compared to traditional capacitive filter networks. It is also easy to assemble, reducing time spent in the assembly process.

In conclusion, the FMER-G92Z-T357 is a great choice for a low pass filter due to its high performance, reliability, and ease of assembly. With its ability to block both common and differential mode noise, the filter is ideal for applications requiring superior noise reduction and EMI protection.

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