TTC-4091

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Common Mode Chokes

Common mode chokes are devices used to reject or attenuate common mode or differential mode interference in high-frequency circuits. They are used in a wide variety of electrical and electronic circuits, from consumer electronics to telecommunications. The TTC-4091 is a high-quality, high-performance common mode choke specifically designed for use in high-speed applications.

Features and Benefits

The TTC-4091 is designed with a low DC resistance of 0.2mΩ per pair and a high common mode rejection ratio of 40 dB, making it suitable for use in high-speed circuits. The device also has good power handling capability, with 10uV/A rated current. It also has a wide operating temperature range of -40°C to +125°C.

Application Field

The TTC-4091 is most commonly used in communications, automotive, industrial, medical and instrumentation applications where high levels of electromagnetic interference (EMI) can be expected. It can be used to reduce the amount of EMI that is conducted through a bus or cable, providing increased signal integrity in high-speed digital applications. The choke can also be used to protect sensitive analog and digital circuits from common mode and differential mode interference that is generated by radiated or conducted sources.

Working Principle

The TTC-4091 works by using a combination of magnetic and electrical techniques to reject interference. It is composed of multiple turns of wire on an iron core. In order to reject common mode interference, the mains are equalized, creating an imbalance which prevents the interference from passing through the choke. In order to reject differential mode interference, the choke acts as a low-pass filter, attenuating high frequency signals and allowing only the lower frequency signals to pass.

The device also utilizes ferrite cores, which have high effective inductance and high impedance at high frequencies. The high impedance, in combination with the equalized mains, provides a high degree of attenuation of the interference signal. This ensures that the signal reaching the downstream electronics is noise- and interference-free.

Conclusion

The TTC-4091 is an excellent choice for mitigating EMI in applications that are sensitive to high-frequency interference. Its combination of a low DC resistance, high common mode rejection ratio, good power handling capability and wide operating temperature range make it a suitable candidate for use in high-speed circuits. The device\'s use of a combination of magnetic and electrical techniques ensures a high degree of attenuation of unwanted EMI, thereby ensuring signal integrity and preventing damage to downstream electronics.

The TTC-4091 is an ideal solution for anyone looking for a high-quality, high-performance common mode choke for their high-speed applications.

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