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| M I C R O T U NE(R) RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS MT1120 AUTOMOTIVE AM/FM ANTENNA AMPLIFIER SUBSYSTEM PRELIMINARY PRODUCT BRIEF The MT1120 is a highly integrated and complete RF amplifier subsystem for active AM/FM antennas MT1120 High Performance Automotive AM/FM Amplifier Subsystem The MT1120 is an advanced, lowpower, highly integrated single-chip amplifier IC specifically designed for automotive AM/FM antenna systems requiring low noise and very low distortion. Additionally, the MT1120 integrates two true-RMS power detectors and two uncommitted op-amps in order to realize an AGC function for AM and FM by simply adding external PIN diodes. The thresholds of the AM and FM AGC function are variable and can be set according to the application requirements. The on-chip 2.5V temperature compensated reference generator and high output voltage op-amp combine to form a low-cost, reliable, automotive-capable power supply which can be directly derived from the car battery. The MT1120 is capable of amplifying signals with frequencies in the 0.15 MHz to 30 MHz range for AM and 76 MHz to 162.4 MHz range for FM. External components determine the gain of the AM and FM amplifiers and can also be modified to extend the operating frequency of the MT1120. The AM amplifier uses a highly sophisticated design technology in order to reach low noise, very low distortion, high input impedance and its capability to drive very low output impedance. The FM amplifier is matched to 50 ohms and is specially designed to perform with very low noise and distortion. The small 28-pin QFN package of the MT1120 and the requirement for minimal external components enables a compact, cost-effective solution fulfilling automotive requirements. APPLICATIONS * * * In-glass antennas Active roof antennas Other active AM/FM antenna systems FEATURES * AM input frequency range 0.15 MHz to 30 MHz supports AM, DRM and HD Radio standards in the longwave, midwave and shortwave band FM input frequency range 76 MHz to 162.4 MHz supports FM and HD Radio standards in the FM and weather band Fully integrated amplifiers for AM and FM Fully integrated RMS level detectors and general purpose op-amps (PIN-diode drivers) for easy implementation of AGC functions for AM and FM On-chip reference voltage generator and high output voltage op-amp builds a reliable low-cost voltage regulator function Low noise Low power consumption Ultra low distortion Very high AM input impedance Very small package Highly sophisticated temperature compensation design technology to support the extended automotive ambient temperature range from -40 to 115C. Integrated ESD protection Minimal external components 28-pin QFN package * * * MICROTUNE * * * * * * * * * * MT1120 AUTOMOTIVE AM/FM A M P L IF I ER S U B S YST E M PRODUCT BRIEF RECOMMENDED OPERATING CONDITIONS PARAMETER Input frequency range AM Input frequency range FM Supply voltage Supply voltage ripple AMPLIFIER ELECTRICAL CHARACTERISTICS MAX 30 162.4 6.25 15 MIN 0.15 76 5.75 TYP UNIT MHz MHz V mV PARAMETER Power Supply Active current FM Signal Path Input frequency range FM FM gain FM input impedance Return loss FM OIP3 FM, Ouput Level 2 x 110dBV FM noise figure at 6dB gain AM Signal Path Input frequency range AM AM gain AM input resistance AM input capacitance OIP3 AM, Ouput Level 2 x 110dBV OIP2 AM, Ouput Level 2 x 110dBV AM output noise at 6dB gain (BW=9KHz) @ 1 MHz Op Amps Input voltage range Output voltage range HV-amp input voltage range HV-amp output voltage range Output current Reference Output voltage MIN TYP 90 MAX UNIT mA 6 76 3 50 8 140 2.7 0.15 0 1 10 145 175 -6.5 0 0 0 0 20 2.5 162.4 12 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply voltage Storage temperature range Operating Junction Temperature Lead temperature (soldering 5 seconds, lead-free solder) Input voltage MHz dB dB dBV dB MIN -40 MAX 6.5 +150 +145 +260 UNIT V C C C V 30 10 MHz dB M pF dBV dBV dBV -0.3 VCC +0.3 Vcc Vcc Vcc 36 V V V V mA V FM Out 28 27 26 25 24 23 22 Optional FM PIN diodes 1 2 3 21 FM In 20 FM Amplifier Level Detector Op Amp 1 19 18 17 16 6V Power Supply + Reference Voltage 4 5 6 7 MT1120 AM In 15 AM Amplifier Level Detector Op Amp2 8 9 10 11 12 13 14 MT1120 Pin Diagram AM Out MT1120 Block Diagram 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 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. 031307 MT1120 PB-00120 -- Rev 1.2 High Voltage OpAmp Exposed die attach paddle on package bottom 12 Volt Input Optional AM PIN diodes March, 2007 |
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