HMC644LC5

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HMC644LC5 is a wideband monolithic gain block with unity gain, which is categorized under the RF Misc ICs and Modules group. It is designed with an internal active damping network for improved gain flatness and return loss, and provides wide bandwidth and low noise with low inter-modulation distortion. The HMC644LC5 also includes various power down modes for reduced power consumption.

The HMC644LC5 is designed to be used for a variety of applications, including amplifiers for satellite radio, TV receivers, baseband data communication systems, and point-to-point radio systems. It can also be used as a gain block in digital and analog radio frequency systems, as well as baseband and multimedia systems. Additionally, the HMC644LC5 is commonly used as a repeater for signal amplification and supporting long-distance transmission, particularly in wireless network systems.

The HMC644LC5 is a high-performance gain block, and offers a wide operating frequency range from DC to 4 GHz. It has 37dB typical linear gain, and at 0.2GHz, the HMC644LC5 provides exceptional suppression of even-order harmonics with +60dBc for 2nd order and +40dBc for 4th order harmonics. Furthermore, it provides low phase noise of -74dBc at 4GHz for a 50KHz offset.

The working principle behind the HMC644LC5 lies in the internal active damping network, which consists of a low-noise input amplifier, a buffer stage, and a gain stage, all controlled by an internal voltage-domain gain control loop. The active damping network enables the principal advantage of rapidly responding to input signal fluctuations while maintaining good linearity and noise performance.

In addition, the HMC644LC5 benefit from an integrated power down feature. This feature minimizes power usage by reducing power dissipation when the device is not in use, making it a great choice for energy-efficient systems. Moreover, the device is RoHS compliant and supports industry standard SMT packaging.

In conclusion, the HMC644LC5 is an ideal choice for applications requiring high gain, wideband frequency response, high linearity, and excellent noise performance. Its integrated active damping network allows for improved gain flatness and return loss. Additionally, its internal power down features offer low power usage, making it a great choice for energy-efficient systems.

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