M I C R O T U N E ® MT2050 SINGLE-CHIP BROADBAND TUNER PRODUCT BRIEF The MT2050 is a 5.0V single-chip broadband tuner with an integrated IF variable gain amplifier. The MT2050 is an advanced single-chip broadband tuner that has been optimized for high performance cable modems and digital cable set-top boxes that require low composite distortion and noise under digital cable environments. The MT2050 includes all active circuitry required to implement total RF functionality, making it the world’s first complete RF/amplifier silicon front end. It is capable of receiving frequencies in the 48 MHz to 860 MHz range and converting a selected channel to a standard intermediate frequency (IF). Supported IF frequencies include NTSC, PAL, and digital standards including DOCSIS, EuroDOCSIS, DVB-C, and ITU J83, A, B, C. The MT2050’s low close-in phase noise allows it to be used for both digital and analog video signals including video, high speed data, and voice. Its dual-conversion 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. APPLICATIONS • • • Cable modems / voiceenabled cable modems Digital set-top boxes (STB) Home gateways FEATURES • • • • • • • • 48 MHz to 860 MHz input frequency range Works seamlessly with all analog and digital demodulators Low power dual-conversion architecture Minimal external components No manually tunable parts required Simple interface to external filters Integrated IF variable gain amplifier for direct connection to digital demodulators Fully compatible with NTSC, PAL, SECAM, DAVIC, DVB-C, DOCSIS 1.0, 1.1 and 2.0, EuroDOCSIS and other standards. M I C R O T U N E MT2050 Single-Chip Broadband Tuner RF SILICON AND SYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS M T2 0 5 0 SIN G L E- C HIP B R O ADB A ND T UN E R PRODUCT BRIEF 1220 VCCmx2 VCCfga DNC 37 MIX2in 40 38 MIX2ip 41 39 VCCmx1 DNC 34 AVCClo2 15 mV AVCClo1 4 33 LO2tk 100 °C LO1tk1 5 32 LO2reg Ω °C VGAin Lead temperature (soldering, 4 seconds) +245 °C Lead-free temperature (soldering, 5 seconds) +260 °C VCC +0.3 V 24 +150 VGActrl VGAip 25 23 26 12 VCCvga 11 22 DNC SERca VGAon V 20 UNIT 6 21 DNC VGAop 27 GPADin 10 19 GPO1 GPO0 SROp DVCClo2 28 18 29 9 17 8 LO1lpf VCC DVCClo1 SROn DNC 16 LO2lpf 30 DNC 31 7 15 6 SERsda LO1tk2 14 MAX Exposed Die Attach Paddle on Package Bottom FGAop LO1reg ABSOLUTE MAXIMUM RATINGS -0.3 42 3 kHz Input voltage MIX1op DAGCin 400 -40 43 FGAon V 300 Serial control clock Storage temperature range 44 35 Operating junction temperature MIN GPO2 36 Supply voltage ripple PARAMETER MIX1on 1 2 5.25 5 Supply voltage 45 VLNAin VCClna MHz VGA output load impedance 30 4.75 VCClna MHz 60 Supply voltage 46 MHz VLNAip UNIT 860 47 MAX 13 First intermediate center frequency Second intermediate center frequency (programmable) TYP 48 SERen MIN SERscl PARAMETER Input frequency range 48 RECOMMENDED OPERATING CONDITIONS MT2050 Pin Diagram ELECTRICAL CHARACTERISTICS PARAMETER Power Supply Active current Shut-down current Return loss Noise figure, max gain RF AGC range VGA AGC range LO1 Phase noise (10 kHz) Phase noise (100 kHz) L02 Phase noise (10 kHz) Phase noise (100 kHz) MIN TYP MAX 325 35 10 7.3 30 30 UNIT mA mA dB dB dB dB -86 -109 dBc/Hz dBc/Hz -94 -114 dBc/Hz dBc/Hz RF INPUT IF OUTPUT MIX 1 MIX 2 FGA VGA L02 L01 PLL PLL SRO SERIAL CONTROL INTERFACE MT2050 Block Diagram Microtune, Inc., 2201 Tenth 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 design centers, sales offices, and sales representatives, visit our Web site at www.microtune.com. The information in this document is believed to be accurate and reliable. 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, 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; 5,737,035; 5,739,730; 5,805,988; 5,847,612; 6,100,761; 6,104,242; 6,144,402; 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; D469,742; 6,535,068; 6,580,313; 6,608,522; 6,631,257; 6,674,409; 6,714,776; 6,725,463, 6,744,308 B1; 6,771,124; 6,784,945; 6,804,099; 6,888,406; 6,891,435; 6,906,594; 6,920,182; 6,963,478; 6,973,288; D,469,742; DE10,011,662 and additional patents pending or filed. Entire contents Copyright © 1996 - 2006 Microtune, Inc. MT2050 PB-00038 — Rev 1.2 121505 March 2006 SERIAL DATA CLOCK