BCM3440 PRODUCT Brief ® BCM3440 DIRECT CONVERSION SATELLITE TUNER B C M 3 4 4 0 F E AT U R E S • Direct conversion architecture in standard CMOS process • Supports QPSK and 8PSK demodulation • Input frequency range: 950 to 2150 MHz • Supports 1 to 45 Mbaud data rates • Input signal: -25 to -70 dBm • Baseband in-phase and quadrature outputs • Programmable bandwidth I/Q baseband filters • Integrated LO with on-chip VCO and PLL • Integrated LNA with RF AGC • On-chip IF AGC • Two wire I C host interface • Differential signals for high noise immunity • Uses a low-cost crystal • 3.3V operation • 48-pin TQFP 2 S U M M A R Y O F B E N E F I T S • Designed to work with the BCM4500 and BCM4201 satellite receivers • Operates across entire satellite L-band frequency range • Extremely low phase noise for operation with 8PSK modulation systems • Highly integrated solution minimizes design time and system cost • Operates using single 3.3V supply to eliminate the need for 5V • Complete reference design available to minimize customer RF expertise requirement BCM3440 Tuner Application Example (Satellite Set-Top Box) Memory L-band BCM3440 I SatelliteTuner Q BCM4500 Advanced Modulation Satellite Receiver Conditional Access BCM7020 HD Video HDTV MPEG-2 Transport Demux, Audio/ Video Decoder and Display Engine Audio Host CPU