Product category:
Communications ICs (Wired)
News Release from: Texas Instruments (April 2001-March 2006) | Subject: DRI250 baseband and DRI8201 AFE
Edited by the Electronicstalk Editorial
Team on 10 September 2003
All-in baseband handles mixed radio
receivers
A new single-chip baseband integrates all the digital functions required to build a combined analogue AM/FM and HD Radio receiver.
Providing customers with the most complete digital radio solution on the market, Texas Instruments and iBiquity Digital Corporation, the sole developer and licenser of HD Radio technology, have developed the industry's first single-chip baseband to integrate all of the digital functions required to build a combined analogue AM/FM and HD Radio receiver For use in automotive applications, TI's second-generation HD Radio digital baseband, based on its programmable DSP technology, and a new, complementary intermediate frequency (IF) analogue front end (AFE) provide unmatched performance and integration, including audio processing and MP3 and Windows Media Audio (WMA) CD support on the baseband for the first time
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
Related stories
Data buffer has dual multiplexer
Texas Instruments has introduced the industry's first 0- to 4-Gbps data buffer/signal conditioner with a dual multiplexer.
Reference design for wireless optical comms
A new technology from Texas Instruments dramatically cuts the cost and complexity of bringing the high-speed datarates of optical networking to end users.
Building on the success of TI's pioneering first-generation DRI200 baseband (now in production), the new TMS320DRI250 baseband brings together TI's programmable DSP expertise and iBiquity's patented HD Radio technology.
"Leveraging our global digital radio experience, TI continues to pioneer growth and innovation in HD Radio technology", said Naresh Coppisetti, Digital Radio Business Manager at TI.
"The DRI250 is a natural progression from the DRI200 in terms of integration, radio performance and cost reduction.
Further reading
TI adds low-cost and high-integration DSP pair
Texas Instruments has unveiled the latest pair of programmable DSPs in its ultra-power-efficient TMS320C55x family of digital signal processors.
Triple-output power modules shrink ADSL designs
Texas Instruments has unveiled two new triple-output plug-in power solutions for asymmetric digital subscriber line (ADSL) applications.
Advanced TDMA technology to boost cable bandwidth
Texas Instruments has unveiled its new technology featuring end-to-end advanced TDMA that will enable a 50% increase in upstream plant capacity.
The low cost software radio approach will be the key for manufacturers to differentiate themselves in the world of digital technologies".
Beyond the integration of HD Radio technology and IF sampled AM/FM, the DRI250 baseband includes audio processing for sound and WMA and MP3 decoders for automotive CD radio.
Such integration of digital processing features in a single chip, coupled with TI's new analogue front end chip, the DRI8201, results in a lower cost of implementation of HD Radio systems.
In addition, as a software radio baseband, the DRI250 allows for several new differentiated features to be added in the future such as surround sound FM for an enhanced listening experience and time buffering for the ability to rewind live radio.
TI's programmable solution also allows for the possibility of the Tomorrow Radio Project, a proposal that would allow a second audio stream to be broadcast on each radio station, ultimately giving the listener access to more content on the air.
As a software radio, the DRI250 provides manufacturers the flexibility and processing headroom to add support for new standards, features or modifications, as experienced recently with iBiquity's conversion to its proprietary HDC codec.
"Receiver manufacturers have begun the process of combining technologies, while lowering implementation costs", said Jeffrey Jury, COO of iBiquity Digital Corp.
"We anticipate products utilising TI's DRI250 to open up new growth opportunities for markets aimed at targeted audiences for these combined technologies".
The DRI250 baseband is complemented by TI's new mixed-signal DRI8201 chip, which provides the precision IF ADC, digital down convertor (DDC) and control DAC needed in a complete digital radio design.
The DRI8201 uses an 80MHz, 12bit ADC to digitise the AM/FM IF signal from the radio tuner with the high precision needed for optimum AM/FM and HD Radio performance While offering the same HD Radio benefits as in the DRI200, the DRI250 also provides exceptional AM/FM radio performance for automotive receivers.
Part of this performance improvement comes through the oversampling done by the 12bit ADC on the DRI8201.
In addition, through software radio algorithms, such as adaptive stereo separation and adaptive audio bandwidth control, the DRI250 addresses the specifications of audio signal/noise ratio, total harmonic distortion plus noise and stereo separation and sensitivity, all of which are critical in delivering superior quality audio sound and reception to the listener.
Samples of the new DRI250 baseband and DRI8201 AFE are available in the fourth quarter of this year, with volume production expected to be available in early 2004.
Sample pricing for DRI250 is $30 each and $8 each for the DRI8201.
• Texas Instruments (April 2001-March 2006): contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
