MT2170 MICROTUNE | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
DOCSIS 3.0 Wideband Tuner M I C R O T U N E ® RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS M I C R O T U N E MT2170 SINGLE-CHIP DOCSIS 3.0 WIDEBAND TUNER PRODUCT BRIEF The MT2170 is a low-power, single-chip DOCSIS 3.0 wideband tuner with an integrated IF variable gain amplifier. 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 dual- conversion architecture yields the desirable characteristics of DOCSIS 3.0 broadband functionality. Together with the Microtune differential 2 nd 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
MT2170 SINGLE-CHIP WIDEBAND TUNER PRODUCT BRIEF MT2170 PB-00144 — Rev 1.0 March, 2007 P R E L I M I N A R Y Microtune, Inc., 2201 Tenth 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 The information in this document is believed to be accurate and reliable. Microtune assumes no responsibility for any consequen ces 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 o r 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 M icrotune 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; D469,742 and additional patents pending or filed. Entire contents Copyright © 1996 - 2007 Microtune, Inc. 030207 RECOMMENDED OPERATING CONDITIONS PARAMETER M IN T YP M AX U NIT Second intermediate center frequency (programmable) 26 126 MHz Supply voltage 5V 4.75 5.0 5.25 V Supply voltage 3.3V 3.15 3.3 3.45 V Supply voltage ripple 15 mV Operating junction temperature 125 °C VGA output load impedance 500 Ω Serial control clock 400 kHz ABSOLUTE RATINGS PARAMETER M IN M AX U NIT Supply voltage 5V 6 V Supply voltage 3.3V 3.6 V Storage temperature range -50 +150 °C Lead-free temperature (soldering 4 seconds) +260 °C Input voltage -0.3 VCC +0.3 V UPCVCCF IFVCC VCC3V GND LO1LPF LO1REG LO1T1CM LO1T2CM LO1AVCC N/C GPO VGAoutp VGAcntl VGAVCC VGAVCC VGAinn VGAinp N/C PD2cap PD1cap DNCoutn DNCoutp SERData VGAoutn LO2AVCC LO2REG LO2TCM LO2LPF GND VCC3V XTALp XTALn SROout SERCLK GND DNCVCC DNCinn DNCinp GND GND UPCoutp UPCoutn UPCVCCB GND RFcap RFin Exposed paddle on package bottom TUNER ELECTRICAL CHARACTERISTICS PARAMETER M IN T YP M AX U NIT Power Supply Active current 5V 250 mA Active current 3.3V 75 mA RF Signal Path Input frequency range 48 1000 MHz Noise figure 9 dB Voltage gain 42 dB RF AGC range 55 dB Image rejection 70 dBc LO phase noise (10 kHz) 84 dBc/Hz LO phase noise (100 kHz) 104 dBc/Hz LO step size 50 kHz IF VGA Frequency range 26 126 MHz Maximum output voltage 1.0 Vp-p Maximum voltage gain 30 dB IF AGC range 46 dB Temp Sensor AGC Control Block Digital Control AFC A/D GPO RF Input LNA Filter ATTN RL Amp UPC DNC DNC Output IF VGA PD1 PD2 VCO/ PLL SRO SRO Out IF AGC I/P