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ITD1000 Dataheets PDF



Part Number ITD1000
Manufacturers Analog Device
Logo Analog Device
Description Zero IF Tuner IC
Datasheet ITD1000 DatasheetITD1000 Datasheet (PDF)

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 P.

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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 oscillation signal for the entire frequency range. For optimized performance with variable symbol rate, baseband channel select filters are fully programmable and their cutoff frequency is digitally tuned to 5 MHz to 40 MHz. The ITD1000 also includes high dynamic range baseband variable gain amplifier. A low noise amplifier and optimized gain control scheme enable wide dynamic range operation. The ITD1000 exhibits an low power consumption about 270 mW, while conventional tuners consume over 1 watt. And power down function reduces the standby mode current consumption for power hungry system. The Zero-IF IC has onchip voltage regulator for single power supply application. Using small leadless 32-MLF package, The ITD1000 is the best solution for highly integrated multi-tuner system and portable application where low power consumption is required. ITD1000 has an industry standard I2C serial bus interface. Primary application of the ITD1000 is the direct broadcast satellite (DBS) Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. .


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