HMC656LP2

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Attenuators

The HMC656LP2 is a versatile device that can be used in a variety of applications that require attenuation of an incoming RF signal. It is a wideband digital step attenuator designed for operation in the 6-18 GHz frequency range. It is designed to fit into a 19.55 mm x 16.7 mm x 0.95 mm low profile package, and is suitable for applications that require low power consumption.

Application Field

The main application field for HMC656LP2 is the attenuation of incoming RF signals. This includes applications such as RF testing, radio receivers, wireless communication systems, and RF modules. The device can also be used as a trim attenuator, or as an attenuator in an antenna installation.

Working Principle

The HMC656LP2 operates on a binary digital principle. It is designed to interface with a digital signal processor or microcontroller, and is controlled by a three-wire serial bus that can select one of 32 discrete step-sizes ranging from 0 dB to 31.5 dB. The host system can connect up to 6 of these devices in parallel, providing up to 192 dB of total attenuation.

The device is designed to operate at low power consumption levels, and has an onboard temperature compensation circuit that automatically adjusts the attenuation level to compensate for temperature variations. This ensures that the desired attenuation level remains consistent regardless of environmental conditions.

The device also features an on-chip detector that monitors the power on the input signal, and can raise an alarm if the power falls below or exceeds the set threshold levels. This is useful in ensuring the system is operating within the expected parameters, and can prevent unexpected damage to the system.

Conclusion

The HMC656LP2 is a versatile digital step attenuator that can be used in a variety of applications requiring the attenuation of incoming RF signals. It is designed to fit into a low profile package, and is capable of achieving up to 192 dB of total attenuation when connected in parallel. The device also features an onboard temperature compensation circuit, as well as a detector that can raise an alarm if the power on the input signal falls below or exceeds the set threshold levels.

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