HMC651-SX

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Attenuators, such as HMC651-SX, are devices that reduce the magnitude of a signal without distorting it. Attenuators are widely used in electronic circuits for various applications. In this article we’ll take a look at the application field and the working principle of HMC651-SX attenuator.

The HMC651-SX is an ultra-wideband (DC to 50 GHz) MMIC (monolithic microwave integrated circuit) attenuator. It is designed for general-purpose RF attenuation in a wide range of applications such as base stations, automotive, wireless communications, space, and cable TV etc. This device offers excellent performance in terms of low insertion loss and high input power handling capabilities. The HMC651-SX is available in a 3.0mm x 3.0mm QFN packaging.

So, what is the working principle of HMC651-SX? The device is a passive MMIC which employs a “ladder’ attenuator design. It is composed of several PIN diodes connected in series and in parallel in order to achieve the desired level of attenuation with the least amount of distortion. The diodes are connected in pairs, each pair defines a single attenuator step. By cutting off or enabling selected pair of PIN diodes, a different amount of attenuation can be set. The device can be easily configured to provide 6 different attenuation values by changing the states of its two control pins. Furthermore, the attenuator is design in such a way that it consumes low power and low current.

HMC651-SX is a great choice for applications requiring a wide attenuation range and excellent performance. It offers an attenuation range from 0 to 31.5 dB, a low insertion loss (minimum 0.4 dB) and a high power handling capability (4 W CW). Furthermore, the device is highly reliable thanks to its scratch-proof construction and hermetically sealed package.

In conclusion, the HMC651-SX is an ultra-wideband MMIC attenuator which is specially designed for applications that require high performance in terms of distortion-free attenuation and low insertion loss. This is a great choice for applications such as base stations, automotive, wireless communications, space, and cable TV. The device is highly reliable and comes in a scratch-proof package. The HMC651-SX is an excellent choice for attenuator applications.

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