| 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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