MT141XAM

M I C R O T U NE RF SILICON AND SYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS, AND AUTOMOTIVE ELECTRONICS MT141X AM/FM ANTENNA AMPLIFIER SERIES PRODUCT BRIEF The MT141X modules are optimized to work with in-glass antennas. The amplifiers are customized to meet the specific housing, connector and electrical matching requirements of varied car platforms that deploy different antennas, radios, and mechanics. MT141X AM/FM Antenna Amplifier Module The Microtune MT141X AM/FM antenna amplifiers are designed for use in automobiles with state-of-theart in-glass antenna systems. Since in-glass antennas need high performance amplifiers to supply a clean signal to the radio, the MT141X modules are ideal for this demanding environment. As most in-glass antennas employ multiple FM antennas, but use only one AM antenna to add a diversity function for FM, the MT141X amplifiers are available in an AM/FM version and an FM-only version. They are engineered to deliver high linearity and low noise, critical features of an automotive AM/FM receiving system. A low noise figure enables high system sensitivity to receive clear sound in rural areas, while high linearity permits robust performance in dense, urban signal environments. The implemented AGC circuit for FM provides additional improvement of signal handling capability. The MT141X amplifiers also permit designers to adjust key parameters, including gain, AGC threshold, or input/output impedance, providing the flexibility to optimize performance and integration of entire AM/FM receiver system. Features such as phantom power supply (power is supplied from the car radio via the antenna cable) are additionally offered as an option. The power supply circuit includes reverse voltage protection and the antenna input provides ESD protection. The amplifiers support the frequency ranges of Japan, Europe and the United States. APPLICATIONS • Car radio applications • Automotive in-glass-antenna systems with or without diversity AM FEATURES • World standard frequency range: 150 kHz to 6290 kHz • Very high input impedance • Very low input capacitance • Low output impedance • Low IM2 distortion • Input protection MICROTUNE FM FEATURES • World standard frequency range: 76 MHz to 108 MHz • Integrated AGC circuit • Low IM3 distortion • Low noise figure • Input protection • Suitable for antenna diversity applications GENERAL FEATURES • High performance voltage stabilizer on board • Reverse voltage protection • Low power consumption • High stability over temperature • Optional phantom power supply • Customizable key parameters, frequency range, housing, and connectors • Compact customized size of around 13 cm2 • Meets automotive quality standards MT141X ANTENNA AMPLIFIER SERIES PRODUCT BRIEF OPERATING CHARACTERISTICS PARAMETER MIN TYP 12 27 50 Antenna Amplifier Protection Circuit and Voltage Stabilizer +12V MAX UNIT VCC POWER SUPPLY VOLTAGE Power supply voltage Current consumption FM version Current consumption AM/FM version V mA mA FM Input AGC Circuitry Protection Circuit Matching and BPF FM Amplifier Matching and BPF TEMPERATURE Operating temperature Parametric temperature range Storage temperature -40 -30 -40 +85 +75 +85 °C °C °C VCC Radio or Diversity Unit Output 12V INPUT AND OUTPUT CHARACTERISTICS PARAMETER MIN TYP >10 75 100 75 customized customized LW /AM Input Protection Circuit LPF AM Amplifier LPF MAX UNIT VCC AMPLIFIER INPUT IMPEDANCE AM section FM section kΩ Ω Ω Ω AMPLIFIER OUTPUT AM impedance FM impedance MT141X Block Diagram (AM/FM version) CONNECTORS Output connector type Input connector type Antenna Amplifier FM ELECTRICAL CHARACTERISTICS PARAMETER FM bandwidth Gain (adjustable) Second order distortion (Input: 2x100dBµV at f1 = 98MHz and f2 = 98.8MHz, Output: measured frequency = f2-f1 = 800 kHz) Third order distortion (Input: 2x100dBµV at f1 = 98 MHz and f2 = 99 MHz, Output: measured frequency = 2xf1-f2 = 97 MHz) AGC attack point (adjustable) AGC dynamic range Noise figure VCC Protection Circuit and Voltage Stabilizer +12V MIN 76 TYP 8 MAX 108 UNIT MHz dB FM Input Protection Circuit Matching and BPF AGC Circuitry 10 dBµV FM Amplifier Matching and BPF VCC 35 dBµV dBµV dB dB Radio or Diversity Unit Output 12V 95 35 5 MT141X Block Diagram (FM-only version) AM ELECTRICAL CHARACTERISTICS PARAMETER Long wave (LW) band (optional) Mid wave (MW) band Short wave (SW) band (optional) Gain (adjustable) MIN 150 522 5735 TYP MAX 280 1629 6290 UNIT kHz kHz kHz dB 5 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 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, 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: DE10011662; GB1026825; ES1026825; DE19628727; DE19904588.7; DE348698; FR348698; GB348698; IT348698; DE3821716; US5,933,946; DE50000802.7; DE552624 and additional patents pending or filed. Entire contents Copyright © 1996 - 2005 Microtune, Inc. 041105 PB-00057—Rev 1.1 MAY 2005