HMC848LC5TR

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The HMC848LC5TR is a radio frequency (RF) miscellaneous IC and module from Hittite Microwave Corporation (HMC). It provides a 5GHz single-pole double throw (SPDT) reflective switch in miniature surface mount packaging.

The HMC848LC5TR application field primarily includes active antenna switching, tuner switching, and receive diversity switching. It is designed for cellular infrastructure, CMMB, 3G, WiMAX, LTE, and other applications which require switching signals in high performance, high speed, and low power amplifiers. The integrated SPDT reflective switch has low insertion loss, high linearity, and excellent isolation over its specified band.

The HMC848LC5TR is TR enhanced for integration into an RF receiver. This module incorporates advanced performance features, including fast switching times and extended intermodulation free dynamic range.

The HMC848LC5TR also works with a differential control voltage. This eliminates the need for an external voltage-controlled attenuator or detuning circuits to achieve a wide range of control voltages. It also features enhanced isolation for superior performance in high linearity applications. The integrated switch’s hot switching capability allows multiple switches to be cascaded together without degradation.

The HMC848LC5TR working principle is based on a reflective switch design. The switch consists of a signal source connected to a pair of diodes that are biased to a state of conduction. When a control voltage is applied to the inputs, one diode will be forward biased and the other will be reverse biased. The forward biased diode reflects the incident signal back to the source, while the reverse biased diode absorbs the energy so that no signal is present at the output. This design eliminates the need for a bias voltage as well as complex impedance matching.

The HMC848LC5TR is well suited for applications where high isolation is required, such as switching of antennas or tuners. It also provides excellent performance in linearity applications that require a low distortion over a wide dynamic range. The integrated switch is designed for surface-mount applications, which makes it ideal for use in high-volume, low-cost production environments.

The HMC848LC5TR is a versatile RF modules that offers superior performance in a wide range of applications. It is capable of providing fast switching times, high linearity, and low insertion loss. Its low power consumption, compact size, and ease of use provide engineers with a cost-effective solution for their RF applications.

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