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Industry News / Amplifiers

Hittite Introduces Analog Variable Gain Amplifiers

October 30, 2008
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HMC694Hittite Microwave Corp., a supplier of complete MMIC-based solutions for communication and military markets, has introduced two new additions to its variable gain amplifier (VGA) product line. These innovative analog variable gain amplifiers are an ideal choice for use in for use in applications where accurate signal level control and high linearity is required. These applications include point-to-point and point-to-multipoint radio, EW, ECM, radar and test equipment within the 6 to 17 GHz frequency range.


The HMC694 and HMC694LP4E are GaAs MMIC Analog Variable Gain Amplifiers that operate from 6 to 17 GHz. Ideal for microwave radio applications, these amplifiers provide up to 24 dB of gain, an output P1dB of up to +22 dBm and up to +30 dBm of output IP3 at maximum gain. Requiring only 170 mA from a +5 V supply, these amplifiers feature a gate bias voltage (Vctrl) to allow up to 23 dB of variable gain control. Gain flatness is excellent from 6 to 17 GHz, making the HMC694 and HMC694LP4E ideal for EW, ECM, radar and test equipment applications. The HMC694 is specified for operation from -55° to +85°C, while the HMC694LP4E is specified to operate from -40° to +85°C.

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