CT3369A-10

Series:	--
Packaging:	Bulk
Part Status:	Active
Attenuation Value:	10dB
Frequency Range:	0Hz ~ 4GHz
Power (Watts):	250W
Impedance:	50 Ohms
Package / Case:	BNC In-Line Module

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Introduction to Attenuators

Attenuators are active or passive electronic devices that reduce the power or amplitude of a signal passing through them. They are often used to reduce the level of unwanted interference, such as electromagnetic interference (EMI), without interfering with the intended signal. Attenuators are categorized into two types: voltage attenuators and current attenuators.

CT3369A-10 Application Field and Working Principle

The CT3369A-10 is an ultra-wideband, low-power current attenuator manufactured by Texas Instruments (TI). This device is designed for general-purpose applications including RF and microwave communications, EMI suppression, and signal conditioning.The CT3369A-10 is a leadless, surface-mount, two-terminal device. It consists of a series of capacitors and resistors connected in a modified pi network that provides a continuous, non-adjustable power attenuation from .01 dB to 9.5 dB. The device impedance is controlled by a series of on-board resistor networks that support a wide range of input resistances, from 10Ω to 10kΩ. The low power requirement and high precision make the CT3369A-10 suitable for applications where low power input or high linearity is required.When the attenuator is connected in a circuit, the input current is routed through the attenuator, and then connects to the output resistor. The combination of the two resistors and the series of capacitors and resistors inside the attenuator form a pi-type filter, which reduces the amplitude of the signal. The ratio of the resistors determines the amount of attenuation. The device has been optimized for linearity and signal to noise ratio.The CT3369A-10 also features a low dielectric absorption and low signal distortion, making it suitable for use in high-frequency, wide-bandwidth applications such as video, audio, and cellular communications. The device also features an internal temperature limiting circuit which helps to protect the unit from excessive temperature.

Conclusion

The CT3369A-10 is an ultra-wideband, low-power current attenuator designed for general-purpose applications. It is suitable for RF and microwave communications, EMI suppression, and signal conditioning. The device has a low power requirement and high precision, making it suitable for applications where low power input or high linearity is required. The device features a low dielectric absorption and low signal distortion making it suitable for high-frequency, wide-bandwidth applications.

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