Product category:
Communications ICs (Wired)
News Release from: Microtune | Subject: MT1120
Edited by the Electronicstalk Editorial
Team on 10 November 2004
Amplifier for in-glass or small roof
antennas
Microtune has introduced an advanced one-chip AM/FM amplifier, the MT1120, specifically designed for integration into vehicle window-mounted antennas or small roof antennas.
Bringing its radio frequency (RF) silicon expertise to the automotive electronics industry, Microtune has introduced an advanced one-chip AM/FM amplifier, the MT1120, specifically designed for integration into vehicle window-mounted antennas, small roof antennas or other integrated antenna systems Compared to conventional discrete amplifiers, the new MT1120, through increased integration, offers amplifier-systems providers more functionality and higher performance in a miniature form factor
This article was originally published on Electronicstalk on 25 Sep 2002 at 8.00am (UK)
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Microtune is an RF silicon and systems company that develops tuners, amplifiers and transceivers targeted to the consumer and automotive electronics markets.
The company is recognized for its breakthrough RF silicon technology, driving traditional RF module functions into high-performance single chips.
Unlike other amplifier chips on the market, the MT1120 integrates, into one device, the FM amplifier, AM amplifier, and automatic gain control (C) functions for the FM and AM bands.
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It amplifies the radio signal, compensating for the reduced performance of in-glass or small roof-mount antennas.
The MT1120 offers extreme large signal handling capability and low-noise performance.
These features, combined with its integrated C functionality, yield improved sensitivity and performance under difficult reception conditions, such as those resulting from weak signals or overload.
The MT1120s high degree of integration, very small size and superior performance also contribute to its overall system efficiency and lower RF solution cost.
"Automotive suppliers are rapidly expanding the use of integrated antenna systems in automobiles across an increasing number of makes and models," said Barry Koch, Vice President and General Manager, Microtunes Automotive Business Unit.
"The industry has been looking for an integrated amplifier solution that meets increasingly strict performance and extreme automotive temperature-range requirements, while, at the same time, offering a reduction in overall systems cost.
Our experience in developing high-performance RF siliconplus our track record in developing industry-leading AM/FM, car-TV and telematics tunerspaved the way for the MT1120s advance in automotive component technology." Application Flexibility The MT1120 is designed for single-antenna systems, but is also well suited for implementation in antenna diversity systems, where multiple amplifiers are required to support multiple antennas.
In addition, the application flexibility of the MT1120 permits system providers to optimally match varying antenna structures with different radio configurations.
The MT1120 is also designed to conform to the applicable specifications of major worldwide carmakers, enabling it to support automotive radio systems across global markets.
Engineered for High Functional Integration and Superior Performance The MT1120 is an advanced, low-power, single-chip amplifier that integrates two true-RMS power detectors and two uncommitted op-amps, realizing an C function for AM and FM by simply adding external PIN diodes.
The thresholds of the AM and FM C function are variable and can be set according to the application requirements for system optimization.
The on-chip temperature-compensated reference generator and high-output voltage op-amp combine to form a low-cost, reliable, automotive-qualified power supply, which can be connected directly to a non-regulated automotive electrical system.
The MT1120 is capable of amplifying signals with frequencies in the 0.15 MHz to 6.2 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 highly sophisticated design technology 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 designed for low noise and very low signal distortion.
These characteristics are required for achieving high-end AM/FM system performance, particularly under critical reception conditions.
Pricing and Availability The MT1120 amplifier is sampling now and is priced at $2.20 in quantities of 10,000.
Initial production is planned for early 2005.
To simplify evaluation and design, Microtune also offers an MT1120 Evaluation Board.
In addition to its suite of silicon amplifiers, Microtune also offers tuners for AM/FM car radios, mobile multimedia/TV systems and telematics.
As with Microtunes other transportation products, the MT1120 is environmentally hardened to operate under extended temperature ranges and adverse climatic conditions and is qualified to TS16949 and AEC-Q100 standards.
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