RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS MT2022 SINGLE-CHIP MoCA™-COMPATIBLE BROADBAND TUNER PRODUCT BRIEF The MT2022 is a single-chip broadband tuner designed for superior PRELIMINARY 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, DOCSIS™, EuroDOCSIS™, and other standards Can be used in conjunction with Microtune’s upstream amplifiers to create a complete RF front end for bidirectional STB applications MT2022 SINGL E-C HIP BRO ADB AND TU N ER PRODUCT BRIEF TUNER ELECTRICAL CHARACTERISTICS RECOMMENDED OPERATING CONDITIONS PARAMETER MIN Input frequency range Second intermediate center frequency (programmable) TYP MAX UNIT 48 1100 MHz 30 57 MHz MIN TYP MAX UNIT Active current, 3.3V 82 mA Active current, 5V 270 mA RF Signal Path (See figure 2) Supply voltage, +3.3V 3.15 3.3 3.45 V Supply voltage, +5V 4.75 5.0 5.25 V Input frequency range 15 mVp-p Noise figure (DNC Out) 9 dB Terminal voltage gain (DNC Out) 39 dB Supply voltage ripple Operating junction temperature °C 100 VGA differential output load impedance Ω 300 Serial control clock 400 DNC differential load impedance kHz Ω 800 ABSOLUTE MAXIMUM RATINGS PARAMETER MIN MAX Supply voltage, +3.3V UNIT +260 °C Junction temperature +125 °C DNCINp AGCCTRL 43 46 DNCINn DNCVCCrf 47 44 GND 48 45 UPCOUTp UPCOUTn 49 UPCVCC GND 51 52 50 NC UPCVCC 53 GND GND 54 RFINn 55 56 RFINp 1 42 PINSh GND 2 41 PINSe GND 3 40 DNCOUTp NC 4 39 DNCOUTn FDCin 5 38 IFVCC FDCVcc 6 37 LO2tcm FDCout 7 36 LO2reg Exposed die paddle on package bottom LO1tcm1 8 35 VCCLO2 LO1tcm2 9 34 LO2LPF LO1reg 10 33 GND 24 25 26 27 28 DVCCLO2 VGAOUTn VGAVCC VGAVCC 23 VGAOUTp 22 VGACTRL SROVCC 29 SROOUT 14 20 A0 21 VGAINn XTALp 30 XTALn 13 18 GPO 19 VGAINp SerVCC AFCin 31 SerData 32 12 17 11 LO1LPF SerCLK VCCLO1 16 -75 dBc/Hz -82 dBc/Hz LO phase noise (100 kHz) -104 dBc/Hz LO1 step size 250 kHz LO2 step size 2 kHz IF VGA Terminal voltage gain, VGACTRL = 0.7 to 3.3V Lead Free solder temperature (5 seconds) A1 15 LO phase noise (1 kHz) LO phase noise (10 kHz) Output voltage swing °C DVCCLO1 dB dBc Frequency range +245 Figure 1 30 73 V °C MHz Image rejection V +150 -50 1100 RF AGC range 6 Lead solder temperature (4 seconds) Storage temperature range 48 3.6 Supply voltage, +5V PRELIMINARY PARAMETER Power Supply 30 57 MHz 1.0 Vp-p <12.5 >51.5 IF AGC range 39 dB dB DNC Output 1st IF Saw 48-1100 MHz In 2nd IF Saw Input Balun PIN Diode Atten VGA Output IF Gain Control Pin Diode Controller RF Gain Control FDC PLL PLL Charge Pump Charge Pump Die Temp Sensor OOB Tuner 3-bit AD AFC In/Temp Out Serial Bus Clock Data GPO Loop Filter Figure 2 Buffered Reference Output Loop Filter MT2022 Block Diagram MT2022 Pin 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; 5,737,035; 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 © 1996 - 2007 Microtune, Inc. MT2022 PB-00146 — Rev 1.0 062007 July, 2007