NORWOOD, Mass. -- Trying to capitalize on its leading position in the hands-free car-kit market for cell phones, Analog Devices Inc. here has introduced a single-chip solution.
The ADSP-21ESP202 integrates into a single device functionality found in four separate chips, said Ken Waurin, product marketing manager for embedded-speech products at Analog Devices.
"This is a much more integrated solution, and will decrease the overall system-ICcount while decreasing the overall bill of materials cost," Waurin said. "With that
goes increased user flexibility and reliability."
Analog Devices' current hands-free car-kit customers include Ericsson and
Motorola, providing the company with about 75% market penetration, he said.
Today, about 5% of all cell phones sold include a hands-free car kit, but as
legislation requiring the use of hands-free cellular equipment increases worldwide
and the use of the kits gains popularity, Analog Devices believes penetration
could grow rapidly to 10% to 20% of all cell phones shipped.
The ADSP-21ESP202 will be suitable for a number of speech-processing
applications, although full-duplexed hands-free car kits are expected to generate
the largest demand, Waurin said. The device integrates a 16-bit, 50-MHz
ADSP-218x DSP core, a dual voice-band codec, RAM, ROM, and other analog
Vendors can differentiate products by adding proprietary software using late-stage
programmable ROM allowing for integration of customer-developed application
code within six to eight weeks of delivery.
"A couple of years ago, we announced a product that consisted of multiple ICs
and system software that, at the time, we felt was a breakthrough; and we've
achieved a fair amount of success," Waurin said. "With this chip, we've leveraged
our DSP core competencies and our ability to integrate mixed-signal to create a
A hands-free car kit allows cell-phone users to operate a handset by voice so that
hands are kept available for driving. In some European countries, laws have been
passed mandating the use of hands-free car kits for cell-phone users on the road.
Full-duplex systems enable the person in the car and the person receiving the
phone call to speak and listen concurrently, as opposed to half-duplex solutions
that allow only one person to communicate at a time.
The device will work with both zero and professional installation. Professional
systems are installed permanently in a vehicle, while zero-installation systems
typically use a cigarette-lighter adapter and can be removed from a vehicle.
The ADSP-21ESP202 is sampling, and will be priced at $15.95 in 10,000-piece quantities.
Production is scheduled for later this year.