RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS MT2068 SINGLE-CHIP BROADBAND TUNER PRODUCT BRIEF The MT2068 is a low-power 3.3 V single-chip broadband tuner with an PRELIMINARY integrated IF variable-gain amplifier. MT2068 Single-Chip Broadband Tuner The MicroTuner™ MT2068 is an advanced, low-power single-chip broadband tuner that has been optimized for high-performance cable modems, DVB-C & DSG STB’s and embedded DOCSIS adapters (eDOCSIS) that require low composite distortion and noise under digital cable environments. The MT2068 is capable of receiving frequencies in the 48 MHz to 1.0 GHz range and of converting a selected channel to a standard intermediate frequency (IF) between 30 MHz and 60 MHz. The MT2068’s low phase noise makes it ideal for use in digital applications such as video, voice and high-speed data. Its dualconversion architecture, with no requirement for tracking filters, yields the desirable characteristics of traditional cable television tuners: controlled input impedance across the entire input band, low in-band emissions, and outstanding image rejection. In addition, the MT2068 provides excellent in-band flatness as well as very repeatable gain characteristics across the complete reception band. With minor bill of material (BOM) changes, the MT2068 is capable of supporting multiple output standards. The MT2068’s low power consumption significantly conserves current and can be effectively used in battery backed-up EMTA’s, multi-tuner DVB-C (MPEG) and DOCSIS (IP Video) STB applications. APPLICATIONS • • • • VoIP Telephony Modems Cable Modems Multi-tuner All-Digital Set-top Boxes (MPEG or IP Video) Digital Set-top Boxes without loopthrough FEATURES • • • • • • • • • • 48 MHz to 1.0 GHz input frequency range 3.3 V power supply Works seamlessly with digital demodulators Low-power sub-1 Watt dualconversion architecture Integrated first IF filter Single-ended RF input reduces BOM by eliminating input balun Minimal external components No manually tunable parts required Integrated IF variable gain amplifier for direct connection to digital demodulators Fully compatible with DAVIC, DVB-C, DOCSIS 1.0, 1.1, and 2.0, EuroDOCSIS, and other standards MT2068 SINGL E-C HIP BRO ADB AND TU N ER PRODUCT BRIEF TUNER ELECTRICAL CHARACTERISTICS RECOMMENDED OPERATING CONDITIONS PARAMETER Supply voltage MIN TYP MAX UNIT 3.15 3.3 3.45 V 25 mVp-p Supply voltage ripple Operating junction temperature VGA load impedance PARAMETER 400 Active current MIN Input frequency range 1000 kHz dB Noise figure at max gain 9.5 dB Voltage gain RS = 75 Ω 42 dB RF AGC range 29 dB Image rejection 60 dBc V LO phase noise (10 kHz) -84 dBc/Hz 150 °C LO phase noise (100 kHz) -106 dBc/Hz 245 °C VCC +0.3 V LO step size 50 kHz IF VGA Frequency Range 30 Output voltage RFCAP NC UPCVCC UPCVCC DNCVCC DNCP DNCN GND GND VGAINP 40 39 38 37 36 35 34 33 32 31 AGC range RFIN 1 30 VGAINN NC 2 29 VGAVCC UPCVCC 3 28 VGAOUTP NC 4 27 VGAOUTN LO1AVCC 5 26 IFAGC LO1REG 6 25 LO2AVCC LO1T1 7 24 LO2REG Exposed paddle on package bottom LO1T2P 8 23 LO2TN LO1T2N 9 22 LO2TP LO1LPF 10 21 LO2LPF 60 MHz 2.0 Vp-p 37 dB 36 - 57 MHz SAW SIF RFin ATN UPC FIFF DNC VGA SIF RFPM LO1 IFAGC IFPM FCU LO2 SER SRO SRO Buf 20 LO2DVCC 19 GPIO 18 SERADDR 17 SERCLK 16 SERDATA 15 VCC 14 SRON 13 SROP 12 SROout 11 GCU LO1DVCC PRELIMINARY MHz 8 3.6 Lead-free temperature (soldering 5 seconds) -0.3 48 UNIT -40 Input voltage mA MAX Supply voltage Storage temperature range UNIT 257 Return loss ABSOLUTE MAXIMUM RATINGS PARAMETER MAX RF signal path Ω Serial control clock TYP Power supply °C 100 200 MIN MT2068 Pin Diagram CLK Data GPIO 4.8 or 16 MHz 16 MHz MT2068 Block Diagram Microtune, Inc., 2201 10th Street, Plano, TX 75074, USA Tel: +1-972-673-1600, Fax: +1-972-673-1602, E-mail: [email protected], Web site: www.microtune.com For a detailed list of office locations, sales offices, and sales representatives, visit our web site at www.microtune.com Microtune believes that the information in this document is accurate and reliable, as of the date of this document. Microtune assumes no responsibility for any consequences arising from the use of this information, nor from any infringement of patents or the rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or other rights of Microtune. The information in this publication replaces and supersedes all information previously supplied, and is subject to change without notice. The customer is responsible for assuring that proper design and operating safeguards are observed to minimize inherent and procedural hazards. Microtune assumes no responsibility for applications assistance or customer product design. The devices described in this document are not authorized for use in medical, life-support equipment, or any other application involving a potential risk of severe property or environmental damage, personal injury, or death without prior express written approval of Microtune. Any such use is understood to be entirely at the user’s risk. Microtune is a registered trademark of Microtune, Inc. MicroTuner, MicroStreamer, VideoCaster, DataCaster, ClearTune, and the Microtune logo are trademarks of Microtune, Inc. All other trademarks belong to their respective companies. Microtune’s products are protected by one or more of the following U.S. patents: 5,625,325; 5,648,744; 5,717,730; 5,737,035C1; 5,739,730; 5,805,988; 5,847,612; 6,100,761; 6,104,242; 6,163,684; 6,169,569; 6,172,378; 6,177,964; 6,211,745; 6,218,899; 6,268,778; 6,310,387; 6,323,736; 6,355,537; 6,429,502; 6,462,327; 6,535,068; 6,580,313; 6,608,522; 6,631,257; 6,714,776; 6,725,463; 6,744,308; 6,771,124; 6,784,945; 6,804,099; 6,888,406; 6,891,435; 6,906,594; 6,909,886; 6,919,774; 6,920,182; 6,922,556; 6,963,478; 6,973,288; 6,993,310; 7,035,614; 7,039,062; 7,078,960; 7,079,195; 7,119,834; 7,164,899; 7,171,176; 7,184,724; 7,190,942; 7,190,943; 7,242,918; 7,274,410; 7,304,689; 7,304,533; 7,304,393; 7,313,201; D469,742 and additional patents pending or filed. Microtune’s products are protected by one or more of the following International patents: United Kingdom: 1532732; Germany: 60313621.4; Netherlands: 1532732; France: 1532732; and additional patents pending or filed. Entire contents Copyright © 1996 - 2008 Microtune, Inc. MT2068 PB-00152 — Rev 1.1 011108 May 2008