TI Readies 2nd Generation IBOC Chip; Analog, Digital Processing on Single Chip

TI Readies 2nd Generation IBOC Chip; Analog, Digital Processing on Single Chip
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Texas Instruments has its second-generation IBOC chipset ready for receiver manufacturers. TI and Ibiquity say this is the first chip that has the analog and digital processing incorporated into a single chip. For use in automotive radios, the DRI250 baseband integrates IBOC and intermediate frequency-sampled AM/FM, as well as audio processing and MP3 and Windows Media Audio CD support on the baseband.
TI's John Gardner says combining all of these capabilities in software on one chip saves manufacturing costs. For example, the sample cost per unit for the DRI200 introduced last year at this time was $50, while the sample price for the DRI250 is $30.
A new companion analog front end complements the DRI250 baseband. TI's new mixed-signal DRI8201 chip provides the IF analog-to-digital converter, digital down converter and control digital-to-analog converter. The DRI8201 uses an 80-MHz, 12-bit ADC to digitize the AM/FM IF signal from the radio tuner.
Samples of both chips are available in Q4 for use in 2004 HD Radios.
Gardner said the software-programmable chips will allow for additional features to be incorporated in the future such as surround sound for FM and time buffering for the ability to rewind live radio.

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