Direct-Conversion Tuner IC

The MAX2108 is a low-cost direct-conversion Tuner IC designed for use in digital direct-broadcast satellite (DBS) Television set-top box units and Microwave links. Its direct-conversion architecture reduces system cost compared to devices with IF-based architectures. The MAX2108 directly tunes L-band signals to base- band using a Broadband I/Q downconverter. The oper- ating frequency range spans from 950MHz to 2150MHz. The IC includes a low-noise Amplifier (LNA) with gain control, two downconverter mixers with output Buffers a 90 quadrature generator, and a divide-by 32/33 prescaler. By Maxim Integrated Products