MT2050 MICROTUNE | Alldatasheet
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RF SILICON AND SYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS M I C R O T U N E 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 / voice- enabled 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. MT2050 Single-Chip Broadband Tuner
MT2050 SINGLE-CHIP BROADBAND TUNER PRODUCT BRIEF MT2050 PB-00038 — Rev 1.2 March 2006 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 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 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 a ny 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 responsib le 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 produc t 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 lo go 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; 6,714,776; 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; 6,9 73,288; D,469,742; DE10,011,662 and additional patents pending or filed. Entire contents Copyright © 1996 - 2006 Microtune, Inc. 121505 RECOMMENDED OPERATING CONDITIONS PARAMETER M IN TYP M AX U NIT Input frequency range 48 860 MHz First intermediate center frequency 1220 MHz Second intermediate center frequency (programmable) 30 60 MHz Supply voltage 4.75 5 5.25 V Supply voltage ripple 15 mV Operating junction temperature 100 °C VGA output load impedance 300 Ω Serial control clock 400 kHz ABSOLUTE MAXIMUM RATINGS PARAMETER M IN M AX U NIT Supply voltage 6 V Storage temperature range -40 +150 °C Lead temperature (soldering, 4 seconds) +245 °C Lead-free temperature (soldering, 5 seconds) +260 °C Input voltage -0.3 VCC +0.3 V
ELECTRICAL CHARACTERISTICS
PARAMETER M IN TYP M AX U NIT Power Supply Active current 325 mA Shut-down current 35 mA Return loss 10 dB Noise figure, max gain 7.3 dB RF AGC range 30 dB VGA AGC range 30 dB LO1 Phase noise (10 kHz) -86 dBc/Hz Phase noise (100 kHz) -109 dBc/Hz L02 Phase noise (10 kHz) -94 dBc/Hz Phase noise (100 kHz) -114 dBc/Hz MT2050 Block Diagram MT2050 Pin Diagram VLNAin 1 VCClna 2 DAGCin 3 AVCClo1 4 LO1tk1 5 LO1tk2 6 LO1reg 7 DVCClo1 8 LO1lpf 9 GPO0 10 DNC 11 SERca 12 SERen 13 SERscl 14 SERsda 15 DNC 16 VCC 17 SROn 18 SROp 19 GPADin 20 VGAop 21 VGAon 22 VCCvga 23 VGActrl 24