Maxim Integrated Products introduces the MAX2112 zero-IF, direct-conversion tuner for satellite TV. This tuner receives QPSK and 8PSK signals in the 925MHz to 2175MHz range, and downconverts them to baseband for demodulation. It provides a 8.0dB noise figure and wide, -75dBm to 0dBm dynamic range, thus eliminating the need for an external LNA. Additionally, its VCO autotuner function simplifies firmware for ease of use. The MAX2112 is ideal for DVB-S2 and free-to-air applications. The MAX2112 operates from a single 3.3V supply, consumes 300mW, and is designed for use with a 27MHz crystal.
The MAX2112 is packaged in a 5mm x 5mm, 28-pin TQFN and is available in both the commercial (0°C to +70°C) and extended industrial temperature (-40°C to +85°C) ranges. Prices start at $4.50 (1000-up, FOB USA). Evaluation kits and reference designs are available.
