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Attenuators

An attenuator is an electronic device used to reduce the amplitude of a signal to any desired level. Depending upon the design, the attenuator can be used for many application – from general audio equipment to measuring instruments, or even sensitive test instrumentation. The EXB-24AT6AR5X is a 6-bit attenuator designed for a variety of applications.

Application Field and Working Principle

The EXB-24AT6AR5X is typically used to vary the amplitude of a signal within the audio band i.e. from 20 Hz to 20 kHz. The device is sometimes used to adjust the gain of an amplifier under test, or to adjust the power level of a transmitted signal. Due to its wide dynamic range it is suitable for applications as varied as impedance control properties, input and output matching o audio filters etc.

The working principle of the device is based on resistive dividing networks. The device is 6-bit resistive Ladder, with 24 resistors networked together to provide an extended range linear attenuation control. When one control pin is activated, one of the 24 resistors connected to it is dynamically switched on, thus changing the resistance path and therefore the overall attenuation. Six pins are available to select the appropriate resistance and output the desired level.

The device is designed in such a way that every pin can be enabled or disabled, meaning that any combination of resistors can be enabled. This provides a very efficient form of attenuation and provides the user with a wide range of dynamic input. For example, if four bits (or pins) are used to attenuate a signal then the user has the ability to choose from 16 possible combinations to get the required level of attenuation.

The device can achieve a variety of attenuation levels from 0dB (no attenuation) to -81dB (with all six pins enabled). This makes the device ideal for both general purpose audio and signal processing applications.

The EXB-24AT6AR5X is designed to be a very reliable device and is capable of withstanding a wide range of environmental conditions. It can typically operate in temperatures ranging from -40 to +85 degrees Celsius and is designed to withstand both shock and vibration. In addition, the device has a wide power supply voltage range of between 3V and 15V.

In terms of size, the EXB-24AT6AR5X measures in at a 0.254 inch pitch with a 10-pin package that is available in both TSSOP and QFN for easy mounting and soldering. In addition, all wiring and pins are fully potted to ensure reliable connections.

Conclusion

The EXB-24AT6AR5X is a versatile 6-bit attenuator designed for applications such as impedance control, gain control, audio filters, and for adjusting the signals level for transmitted signals. The device has a wide dynamic range, a wide operation temperature range and a wide variety of package options, making it a great choice for any kind of application.

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