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Active RF Mixer

Wed, 06/01/2005 - 7:03am

A high linearity active downconverting RF mixer from Linear Technology simplifies design of 3G cellular basestations. The LT5527 RF mixer features an operating frequency range extending to 3.7 GHz. At 1.9 GHz, the mixer offers IIP3 (Input 3rd order Intercept Point) linearity of 23.5 dBm, conversion gain of 2.3 dB and a noise figure of 12.5 dB, meeting the dynamic range requirements of 3G cellular basestations and other high performance wireless infrastructure receivers. The device’s LO and RF inputs operate single-ended and have built-in 50Ω impedance, requiring few external matching components. Moreover, the LT5527 incorporates a low noise LO buffer, allowing operation at a – 3 dBm LO drive level, resolving the challenges of RF isolation and reducing the need for external filtering.

Linear Technology Corporation

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