PRODUCT DESCRIPTION

The AIT1042 Integrated Digital Tuner with RF and IF Gain Control is a complete 1 GHz bandwidth tuner IC specifically designed to support digital video and data applications. It combines GaAs and Silicon technology to integrate the upconverter, downconverter, VCO, synthesizer, IF amplifier, RF gain control and IF gain control functions of a double-conversion tuner into one small package.

FEATURES

? Complete Integrated RF Tuner: Includes Upconverter with RF Gain Control, Downconverter, Digital IF Amplifier with Gain Control, Dual PLL, and VCOs with integrated tanks

? IF Output - 35 to 50 MHz

? 54 to 1002 MHz Operation

? Operates from a Single +5 V Supply

? Integrated Oscillator Tank Circuits

? 78 dB Gain (including external filter losses) through Digital Output

? 35 dB RF Gain Control Range

? 45 dB IF Gain Control Range

? 2-Wire Serial Programming with 4 Addresses for Multiple Tuner Applications

? Programmable Power-Down Mode

? Programmable Charge Pump Currents

? Materials set consistent with RoHS directives

APPLICATIONS

? CATV Tuners

? HDTV Tuners

? Set-Top Boxes

? PC TV Tuner Cards or Tuner-on-Board