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 baseband using a broadband I/Q downconverter. The operating 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. Applications * Broadband Systems * Cell Phone Base Stations * DirecTV, PrimeStar, EchoStar DBS Tuners * DVB-Compliant DBS Tuners * LMDS * Microwave Links * Wireless Local Loop (WLL) * Low-Cost Architecture * Operates from Single +5V Supply * On-Chip Quadrature Generator, Dual-Modulus Prescaler (/32, /33) * Input Levels: -20dBm to -70dBm per Carrier * Over 50dB RF Gain-Control Range * 10dB Noise Figure at Maximum Gain * +8dBm IIP3 at Minimum Gain