AIT1005 PicoTunerTM Complete Integrated Data Tuner Product Brief - Rev 1 FEATURES • Complete Integrated RF Tuner Front End • Up Converter, Down Converter, Dual PLL,VCOs, SAW Filter and Discrete Passive Components Integrated in Package • No External Components or Tuning Required • 38 dB Gain, Flat Response over Input Band • AGC Response Repeatable and Stable over Temperature • -85 dBc Phase Noise (10 KHz offset) • Better than -50 dBc Image Rejection • 3 Wire Serial Programming • Small Footprint • DOCSIS Compliant • -40°C to +85°C APPLICATIONS • • • • • M6 Package 40 Pin 22x22mm Surface Mount Cable Modems CATV Data Tuner Set Top Box Home Gateway PC Add-on Card or Motherboard PRODUCT DESCRIPTION The AIT1005 PicoTunerTM is a complete integrated data tuner that includes all the necessary RF tuner front end circuitry for cable modem applications. The AIT1005 combines GaAs and Silicon CMOS technology - which include the up converter, down converter and dual synthesizer circuits - along with a SAW filter, VCO tuning circuits, and passive RF Input from Diplexer 52 MHz to 870 MHz AIT1005 PicoTunerTM components, to facilitate a complete double conversion tuner architecture. The AIT1005 is offered in a 40 lead package and requires one +5V supply, plus a low-power +28V supply for varactor tuning. It is well suited for applications that require complete, low cost, small size, high performance RF modules. 43.75 MHz IF SAW Filter Post AGC Amp Figure 1: Tuner Downstream Path 08/2001 Cable Modem PHY