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RF tuners offer space savings

Posted: 15 Jun 2005 ?? ?Print Version ?Bookmark and Share

Keywords:anadigics? analog tuner? tuner? ait1010? ait1021?

Tuners offer space savingsAnadigics Inc. introduced new digital and analog tuners that provide complete RF front-end functionality in one of the industry's smallest package size. According to the company, the highly integrated AIT1010 and AIT1021 devices offer excellent performance and space savings for cable and terrestrial broadband tuning applications, including digital television (DTV) and high definition television (HDTV).

The new tuners feature a conversion gain of 36dB, which minimizes the need for external amplifiers, thereby reducing system PCB space requirements. The AIT1021 also includes an integrated RF gain control to further reduce the external component count. The two products promise excellent noise figures to ensure outstanding picture quality at low signal levels. The design has also been optimized to offer industry-leading performance and to achieve a minimum BOM cost, said the press release.

Anadigics added that the AIT1010 and AIT1021 offer exceptional linearity and low noise figures, representing an ideal configuration for systems using a densely loaded spectrum. The tuners do not require a low noise amplifier (LNA) at the device input, further reducing the external component count. The AIT1021 features integrated RF gain control over a 25dB range, which eliminates the need for external PIN-diode gain control circuitry. The tuners operate from a single 5V supply, offer two-wire serial programming for compatibility with fast I?C buses, and provide four selectable device addresses for use in multi-tuner applications. Additionally, the new products use a double-conversion architecture to achieve superior channel selectivity and support a range of first IF frequencies, which reduces interference for multi-tuner applications.

The AIT1010 and AIT1021 combine upconverters, downconverters, dual phase-locked-loop synthesizers, and voltage-controlled oscillators with integrated on-die high Q varactors in a single QFN surface-mount package. This new line of highly integrated RF tuners combines RF CMOS and Anadigics' InGaP-Plus technologies. InGaP-Plus technology integrates field effect transistors and bipolar devices on the same InGaP GaAs die, explained the company.

The integrated RF tuners are available in 40-pin, 6-by-6-by-1mm surface-mount packages. Pricing is $2.50 for the AIT1010 and $2 for the AIT1021, in quantities of 10,000 units. Samples are available on a selective basis.

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