M3933/14-21S

Attenuators

M3933/14-21S is a product of for Surface Mount Attenuator in the form of a digitally controlled chip resistor. The attenuator is built with thin metal strips that can withstand extreme temperatures, both high and low. The device also has a very low profile design for easy installation. The attenuator is capable of providing significant advantages in a wide range of applications including audio/video equipment, telecommunications systems, medical devices, and consumer electronics.

Application Field

M3933/14-21S is designed to provide accurate, repeatable attenuation in the range of 4 dB to 21 dB, reducing or eliminating undesired electronic interference in a variety of radio frequency circuits. Its wide frequency range from 0 Hz to 3 GHz covers multiple application fields. Applications include reduction of intensity of unwanted signal noise, acoustic feedback prevention and resonant frequency compensation.

The attenuator can also be used for noise reduction in TV and radio on-air facilities. It can be used in applications where low power losses and precise signal attenuation are required, for example in cellular phone base stations. It is also suitable for controlling input level of audio signals in CD, DVD and other consumer electronics devices, automobile sound systems, automation process control, and in radar and sonar systems.

Working Principle

M3933/14-21S utilizes a fixed-resistor network made of thin metal strips that can provide precise signal attenuation in the 4 dB to 21 dB range. The device is designed to have a low insertion loss, making it suitable for applications where signal losses need to be kept to a minimum.

The device utilizes an external resistor, commonly known as the “tap” resistor, to control the level of attenuation. The tap resistor is used to select one of several possible values for the attenuation (from 4 dB to 21 dB). When the tap resistor is used, the attenuated signal will have a constant attenuation level regardless of changes in frequency. In this way, the tap resistor can be used to create a stable and repeatable form of attenuation.

The attenuator is designed with a low profile package, allowing for easy installation. It is also capable of operating in extreme temperatures, making it suitable for extreme-environment applications. Additionally, the device is rated for a very high power handling level, which makes it suitable for applications where high-power signals need to be attenuated.

The M3933/14-21S is a very versatile and reliable digital attenuator for a variety of applications. Its low insertion losses and wide range of attenuation levels make it suitable for any design that requires accurate and repeatable signal attenuation.