Active Mixer
An RF active mixer from Linear Technology provides linearity and signal-to-noise performance matching that of passive mixers, allowing designers to build 3G cellular basestations that are more compact. The LT5521 streamlines basestation design by resolving the high LO (Local Oscillator) drive level, poor LO suppression and low conversion gain issues common to passive solutions. In addition to applications in wideband CDMA, UMTS, GSM, and PHS basestation transmitters, the mixer's distortion is suitable for cable downlink infrastructure. The mixer incorporates a differential input and output architecture, supporting good linearity over an operating frequency range from 10 MHz to 3.7 GHz. It also provides operation in either an upconverting or downconverting application. As a transmit (upconverting) mixer, the input third-order intercept (IIP3) is +24.2 dBm at 1950 MHz, and the Noise Figure (NF) measures 12.5 dB.
Linear Technology Corporation
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA, 95035
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