HMC387MS8ETR

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RF mixers are a type of electronic component that mixes input signals prior to amplification or detection. The HMC387MS8ETR is an active double balanced mixer from Hittite Microwave Corporation. It is intended for use in communication systems, medical and industrial instrumentation, and other applications for which low conversion loss, high linearity, small size, and good power handling are desirable.

The HMC387MS8ETR consists of an input buffer and two single-ended Gilbert cell mixers. It operates from a single +4V to +12V supply and consumes approximately 90 mA of current. The surface mount package provides excellent heat dissipation and good thermal characteristics in a small form factor.

The operating temperature range of the HMC387MS8ETR is -40 to +85°C. Its physical dimensions are 0.6" x 0.6" x 0.25". The typical conversion loss is 11.3 dB and the typical input IP3 is +15 dBm. It is designed to operate over a wide frequency range, from 950 MHz to 13.9 GHz.

The HMC387MS8ETR is suitable for a variety of RF mixer applications, including base stations, cellular, PCS, WiFi, WiFi-N, military, automotive, medical, and aerospace markets. It is typically used to convert a single RF signal to baseband signals for downconverting or upconverting applications. It is also suitable for multi-standard transmissions such as GSM/EDGE, WCDMA, and LTE.

The working principle of the HMC387MS8ETR is based on the Gilbert cell mixer. Gilbert cell mixers are the most popular type of RF mixers. They consist of two transistors and a transformer, with the primary winding driven by the RF signal and the secondary winding driven by the local oscillator signal. When the two signals are mixed, the output contains the sum and difference of the two frequencies, creating an intermediate frequency signal.

The HMC387MS8ETR also incorporates a carrier suppression circuit to reduce two-tone signals at any mixer output by up to 10 dB. It also includes a low pass filter which reduces distortion and improves conversion loss performance. Furthermore, two on-chip diodes provide DC blocking for the output as well as protection against short circuit or overvoltage conditions.

The HMC387MS8ETR is a highly efficient RF mixer that is ideal for a wide range of applications. Its excellent noise figure, low conversion loss, and high linearity make it an ideal choice for those applications requiring a high-performance RF mixer with low power consumption. It is an ideal choice for a wide range of communication, medical, and industrial applications.

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