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| RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS MT2022 SINGLE-CHIP MoCATM-COMPATIBLE BROADBAND TUNER PRODUCT BRIEF The MT2022 is a single-chip broadband tuner designed for superior performance with MoCA systems. MT2022 Single-Chip Broadband Tuner The MicroTuner MT2022 is an advanced single-chip broadband tuner that has been optimized for high-performance analog and digital cable set-top boxes that require low composite distortion and noise under fully loaded (174 channels) cable environments. It is capable of receiving frequencies in the 48 MHz to 1.1 GHz range and of converting a selected channel to an intermediate frequency (IF). The MT2022's low close-in phase noise allows it to be used for both digital and analog video signals. Its dual-conversion architecture, with no requirement for tracking filters, yields the desirable characteristics of traditional cable television tuners: controlled input impedance across the input band, low in-band emissions, and good selectivity. The device is highly integrated, with on-chip components including a low noise amplifier (LNA), a first mixer that up-converts the input spectrum to a first IF of 1690 MHz, an image-reject mixer that downconverts the filtered first IF spectrum to a standard second IF, a buffer amplifier for the IF output, an IF variable gain amplifier, and a serial interface to program the device as well as read back its status. On-chip phase-locked loops (PLLs) and voltage-controlled oscillators (VCOs) create a fully integrated frequency synthesis system, which runs off a single external crystal. The use of high First Intermediate Frequency (FIF) allows unhindered transmission of Multimedia over Coax Alliance (MoCA) band signals. The imagereject mixer provides excellent image rejection and eases the requirements of the first IF filter. APPLICATIONS * * DSG in cable STBs All-digital cable STBs FEATURES * * The MT2022 features many advantages including: On-chip amplifier for Forward Data Channel (FDC), which reduces bill of materials (BOM) cost while improving performance vs. solutions using a directional coupler. 1.1 GHz bandwidth Ease of multi-tuner front-end implementations Proven performance in dualfunction digital STB designs Eliminates the need for the 28V to 33V supplies typically required by traditional tuners 3.3V and 5V serial bus compatible Minimal external components No manually tuned parts required Simple interface to external filters Software shutdown mode Intermediate frequency (IF) output fully compatible with demodulators for DSG, DAVIC, DVB-C, DOCSISTM, EuroDOCSISTM, and other standards Can be used in conjunction with Microtune's upstream amplifiers to create a complete RF front end for bidirectional STB applications * * * * PRELIMINARY * * * * * * * MT2022 SINGL E-C HIP BRO ADB AND TU N ER PRODUCT BRIEF RECOMMENDED OPERATING CONDITIONS PARAMETER Input frequency range Second intermediate center frequency (programmable) Supply voltage, +3.3V Supply voltage, +5V Supply voltage ripple Operating junction temperature VGA differential output load impedance Serial control clock DNC differential load impedance 800 300 400 MIN 48 30 3.15 4.75 3.3 5.0 TYP MAX 1100 57 3.45 5.25 15 100 UNIT MHz MHz V V mVp-p C kHz TUNER ELECTRICAL CHARACTERISTICS PARAMETER Power Supply Active current, 3.3V Active current, 5V RF Signal Path (See figure 2) Input frequency range Noise figure (DNC Out) Terminal voltage gain (DNC Out) RF AGC range Image rejection LO phase noise (1 kHz) LO phase noise (10 kHz) LO phase noise (100 kHz) 48 9 39 30 73 -75 -82 -104 250 2 30 1.0 <12.5 39 >51.5 57 1100 MHz dB dB dB dBc dBc/Hz dBc/Hz dBc/Hz kHz kHz MHz Vp-p dB dB 82 270 mA mA MIN TYP MAX UNIT ABSOLUTE MAXIMUM RATINGS PARAMETER Supply voltage, +3.3V Supply voltage, +5V Storage temperature range Lead solder temperature (4 seconds) Lead Free solder temperature (5 seconds) Junction temperature -50 MIN MAX 3.6 6 +150 +245 +260 +125 UNIT V V C C C C LO1 step size LO2 step size IF VGA Frequency range Output voltage swing Terminal voltage gain, VGACTRL = 0.7 to 3.3V IF AGC range PRELIMINARY DNCVCCrf UPCOUTn UPCOUTp UPCVCC UPCVCC GND GND 55 54 49 48 46 45 DNCINn 44 RFINn 52 51 56 50 53 47 43 AGCCTRL GND GND NC DNCINp RFINp GND GND NC FDCin FDCVcc FDCout LO1tcm1 LO1tcm2 LO1reg VCCLO1 LO1LPF GPO A0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 42 41 40 39 38 37 PINSh PINSe DNCOUTp DNCOUTn IFVCC LO2tcm LO2reg VCCLO2 LO2LPF GND AFCin VGAINp VGAINn VGACTRL Loop Filter Loop Filter OOB Tuner RF Gain Control Pin Diode Controller PLL PLL Die Temp Sensor 48-1100 MHz In PIN Diode Atten Input Balun DNC Output 1st IF Saw 2nd IF Saw VGA Output IF Gain Control Exposed die paddle on package bottom 36 35 34 33 32 31 30 29 FDC 3-bit AD AFC In/Temp Out Charge Pump Charge Pump Serial Bus Clock Data GPO Buffered Reference Output A1 15 Figure 2 MT2022 Block Diagram 20 17 21 25 23 16 24 26 27 VGAVCC 18 DVCCLO1 SerData SerVCC 19 XTALn SerCLK XTALp 22 VGAOUTn SROOUT VGAOUTp DVCCLO2 Figure 1 MT2022 Pin Diagram Microtune, Inc., 2201 10th Street, Plano, TX 75074, USA Tel: +1-972-673-1600, Fax: +1-972-673-1602, E-mail: sales@microtune.com, 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; 5,737,035; 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; 7,078,960; 7,079,195; 7,164,899; 7,171,176; 7,184,724; 7,190,942; 7,190,943; D469,742 and additional patents pending or filed. Entire contents Copyright (c) 1996 - 2007 Microtune, Inc. 062007 MT2022 PB-00146 -- Rev 1.0 SROVCC VGAVCC 28 July, 2007 |
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