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Microtune launches tuner chip for mobile digital TV on portable devices
 
Indiantelevision.com Team
(27 April 2006 3:00 pm)
 
MUMBAI: The Texas-headquartered Microtune Inc has introduced a new dual-standard, dual-band tuner chip that receives and tunes both digital terrestrial TV and mobile broadcast TV signals for portable applications.

When implemented into consumer multimedia devices, the new Mobile MicroTuner MT2266 enables users to access a variety of content­digital TV broadcasts, mobile TV broadcasts, digital radio and teletext­across the digital video broadcast - terrestrial (DVB-T) and digital video broadcast - handheld (DVB-H) standards. With power consumption of only 350mW, half that of conventional DVB-T tuners, the chip has minimal impact on the battery life of portable platforms.

Original equipment and original design manufacturers can take advantage of the MT2266 tuner to deliver dual-standard TV capabilities and multimedia features on products as diverse as notebook PCs, USB sticks, PCI Express cards, portable DVB-T receivers, personal digital assistants (PDA) and personal media players. The tuner, which supports both the UHF and VHF (Band III) frequency bands, is also suitable for diversity systems, states a company release.

Based on the company's silicon tuner architecture, patented technology and power management techniques, the device is a direct-conversion, single-chip broadband TV tuner. It is optimized for UHF and VHF Band III frequencies with support for the DVB-T and DVB-H standards. It is said to be engineered to deliver high performance based on the NorDig Unified and MBRAI specifications.

Measuring only 6 x 6mm² in a 40-lead QFN package, the device contains all active circuitry required to implement a complete radio frequency (RF) to baseband function. As with other Microtune tuner products, it is characterized by a high level of integration that minimizes the need for external parts, including the requirement for an external low-noise amplifier, IF saw filters, and transformer balun. This architecture supports the significantly reduced footprint designs of leading portable device manufacturers. The device operates from a 2.7V power supply and consumes 350mW, with multiple power down modes, the release adds.

 
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