ITD1000

www.DataSheet4U.com Zero-IF Tuner IC for Direct Broadcast Satellite ITD1000 FEATURES Single chip synthesized Zero-IF tuner for satellite receiver DVB-S, DSS compliant, 950 to 2150 MHz range Low noise figure: 5 dB Operating dynamic range -75 to -10 dBm Compatible with DVB variable symbol rate 1 ~ 45 Msps Ultra low power consumption: ICC < 140 mA @ 1.8 V supply Fully programmable bandwidth channel select filter: Bandwidth 5 ~ 40 MHz On chip loop through amplifier 20-bit sigma-delta fractional-N PLL exhibits 30 Hz fine frequency resolution On-chip low phase noise and wide frequency range VCO eliminates external tank circuits On-chip linear voltage regulators for single supply application No external capacitors to remove DC-offset Additional clock output for demodulator I2C serial bus interface Small 32 MLF package (5 × 5 mm2) FUNCTIONAL BLOCK DIAGRAMS Figure 1. APPLICATIONS Digital Satellite Receiver and Set-Top Boxes Digital Satellite TV Low Power Portable Satellite Receiver GENERAL DESCRIPTION The ITD1000 is a highly integrated single chip zero-IF tuner for digital broadcasting system-satellite (DBS, DVB-S, DSS). It operates from 950 to 2150 MHz for full DVB-S and DSS standard. It includes an LNA/AGC and direct conversion down mixers and PLL/VCO. A loop through amplifier is also integrated to remove additional discrete RF transistors and passive components. On-chip low phase noise VCO, which eliminates external tank circuits, generates In-phase and Quadrature-phase local ...