M I C R O T U N E ® MT2170 SINGLE-CHIP DOCSIS 3.0 WIDEBAND TUNER PRODUCT BRIEF MT2170 Single-Chip DOCSIS 3.0 Wideband Tuner The MicroTuner™ MT2170 is an advanced, low-power single-chip wideband tuner that has been optimized for high-performance DOCSIS 3.0-compliant cable modems and digital cable set-top boxes that require low composite distortion and low noise under digital cable environments. The MT2170 is capable of receiving frequencies in the 48MHz to 1GHz range and of converting a selected channel to a standard intermediate frequency (IF) between 26MHz and 126MHz. The MT2170’s dualconversion architecture yields the desirable characteristics of DOCSIS 3.0 broadband functionality. Together with the Microtune differential 2nd IF Filter, the MT2170 provides an optimized IF signal needed for DOCSIS 3.0 demodulators. The MT2170 provides excellent in-band flatness as well as very repeatable gain characteristics across the complete reception band. The MT2170 has a field proven, onboard, fully autonomous AGC which requires only one signal connection between the tuner and the demodulator. This allows signals of poor quality to be adequately conditioned for further processing to deliver extremely low bit error rates. APPLICATIONS • • • • • • DOCSIS 3.0 Wideband Cable Modems Video over IP Digital Set-top Boxes DOCSIS 3.0 VoIP Telephony Modem PacketCable™ E-MTA’s Home Gateways Multimedia Applications FEATURES • • • • • • • • • 48MHz to 1GHz input frequency range 5V & 3.3V power supply Works seamlessly with DOCSIS 3.0 digital demodulators 1.5W dual-conversion architecture 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 DOCSIS 3.0, EuroDOCSIS, and other standards M I C R O T U N E PRELIMINARY The MT2170 is a low-power, single-chip DOCSIS 3.0 wideband tuner with an integrated IF variable gain amplifier. RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS MT2170 SINGL E-C HIP WID EBA ND TUN ER PRODUCT BRIEF TUNER ELECTRICAL CHARACTERISTICS RECOMMENDED OPERATING CONDITIONS PARAMETER MIN TYP Second intermediate center frequency (programmable) Supply voltage 5V Supply voltage 3.3V Supply voltage ripple Operating junction temperature 4.75 3.15 VGA output load impedance 500 MAX 26 126 5.0 3.3 V V mV °C Ω kHz 400 ABSOLUTE RATINGS PARAMETER MIN UNIT 6 3.6 V V +150 °C +260 °C VCC +0.3 V -50 Lead-free temperature (soldering 4 seconds) Input voltage GND RFin RFcap GND UPCVCCB UPCoutn UPCoutp GND GND DNCinp DNCinn DNCVCC 48 47 46 45 44 43 42 41 40 39 38 37 -0.3 1 36 IFVCC GPO 2 35 DNCoutp A1 3 34 DNCoutn A0 4 33 PD1cap 32 PD2cap 31 N/C 30 VGAinp N/C 5 LO1AVCC 6 LO1T2CM 7 LO1T1CM 8 29 VGAinn LO1REG 9 28 VGAVCC LO1LPF 10 27 VGAVCC GND 11 26 VGAcntl VCC3V 12 25 VGAoutp Exposed paddle on package bottom TYP MAX 250 mA 75 mA 48 1000 dB 42 dB 55 dB 70 dBc 84 dBc/Hz 104 dBc/Hz 50 kHz 26 126 MHz 1.0 Vp-p 30 dB 46 dB 1250 MHz SAW Filter LNA Filter ATTN DNC Output RL Amp DNC IF VGA UPC RF Input VCO/ PLL VCO/ PLL PD2 Temp Sensor AGC Control Block 24 VGAoutn 23 LO2AVCC 22 LO2REG 21 LO2TCM 20 LO2LPF 19 GND 18 VCC3V 17 XTALp 16 XTALn 15 SROout 14 13 MHz 9 PD1 SERCLK UNIT Lumped Element Filter UPCVCCF SERData PRELIMINARY Supply voltage 5V Supply voltage 3.3V Storage temperature range MAX MIN Power Supply Active current 5V Active current 3.3V RF Signal Path Input frequency range Noise figure Voltage gain RF AGC range Image rejection LO phase noise (10 kHz) LO phase noise (100 kHz) LO step size IF VGA Frequency range Maximum output voltage Maximum voltage gain IF AGC range MHz 5.25 3.45 15 125 Serial control clock PARAMETER UNIT Digital Control AFC A/D SRO GPO MT2170 Pin Diagram SRO Out IF AGC I/P MT2170 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 office locations, 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, 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; D469,742 and additional patents pending or filed. Entire contents Copyright © 1996 - 2007 Microtune, Inc. MT2170 PB-00144 — Rev 1.0 030207 March, 2007