highly integrated, worldwide satellite silicon tuner key features ? single-chip rf-to-baseband satellite receiver ? zero-if architecture eliminates the need for image reject fltering ? variable baseband flters for optimal interference rejection ? auto-tuning machine eliminates the need for software calibration ? very low power consumption ? small (6 mm x 6 mm) footprint ? lead-free package applications ? dss/dvb set-top boxes ? digital vcr (dvr) ? commercial digital video, audio, and data receivers the CX24113A is nxps third generation direct down-conversion satellite tuner rf ic intended for operator-based digital satellite networks and free-to-air systems. the CX24113A is a highly integrated satellite tuner solution that incorporates an advanced fractional-n synthesizer, i 2 c serial interface, a fully integrated local oscillator, and variable baseband flters. the device has an improved power supply rejection ratio (psrr), requires a single +3.3v supply, and features very low power consumption. the CX24113A has a built-in auto-tuning machine that eliminates the need for software calibration and accelerates the calibration time. the on-chip fractional synthesizer enables fne frequency step size without adversely affecting lock time. the cx24113 does not require a balun, thus reducing external bill of materials (bom) cost. its highly integrated design saves valuable board space and simplifes rf layout. nxp digital satellite tuner ic CX24113A
www.nxp.com ? 2008 nxp b.v. all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. date of release: june 2008 document order number: 9397 750 16587 printed in the netherlands the companys broad portfolio of semiconductor products also includes client-side xdsl and cable modem solutions, home network processors, broadcast video encoders and decoders, digital set-top box components and systems solutions, and dial-up modems. in addition to its ieee 802.11a/b/g-compliant wlan chipsets, software and reference designs, nxp offers a suite of networking components that includes solutions for applications based on homeplug? and homepna?. additional products include a complete line of asymmetric and symmetric dsl central offce solutions, which are used by service providers worldwide to deliver broadband data, voice, and video over copper telephone lines. CX24113A features ? rf input: 925C2175 mhz ? input power range: -20 to -90 dbm ? symbol rate: 1C45 msps ? noise fgure: 10 db, typical ? input ip3 at minimum gain: 10 dbm, typical ? baseband flter bandwidth: 3C40 mhz ? output voltage: 0.5 vp-p @ rl > 1 k_ ? operating temperature: 0C85o c ? package type: 36-pin, pb-free, qfn cx24113 block diagram brb237 reference to demod reference oscillator programming and control pll dividers, phase detector and charge pump q channel output variable low pass filter i channel output vco rf input variable low pass filter agc amplifier vca 90 0 agc amplifier
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