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WLAN device tailored for cellphones

Posted: 22 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:STLC4370? WLAN? wireless LAN? STMicroelectronics?

STMicroelectronics (ST) announced the volume production of its STLC4370 mobile WLAN solution. The STLC4370 is the first of a family of single-chip WLAN devices specifically designed for cellphones.

Targeted at enterprise smartphones and consumer multimedia handsets, the WLAN solution provides high-speed IEEE802.11g performance without compromising battery life. The STLC4370 contains a fully integrated single-chip WLAN, including zero intermediate frequency (ZIF) transceiver, RF synthesizer/voltage-controlled oscillator, high-speed data converters, an orthogonal frequency division multiplexing/complementary code keying OFDM/CCK digital baseband processor, an ARM9-based media access controller, and a power management unit with integrated power amplifier bias control.

Host control is provided by a flexible secure digital input/output (SDIO) or SPI-supporting clock rates of up to 48Mbps. The STLC4XXX supports system reference-clock frequencies of 19.2-, 38.4- and 40MHz.

Using the Symbian OS and Series 60 UI, the WLAN drivers deliver power-save options, which is said to extend both standby and talk times. The STLC4XXX is suitable for integration into cellphones and can also benefit other applications, including PDAs, handheld data transfer devices and digital cameras.

"Whether it's a cellphone that plays music or an MP3 player and camera phone, the lines between handset and consumer device are blurring," said Matthew Hatch, GM of ST's WLAN business unit. "Subscribers are demanding the choice of fast download of their own music collection over IEEE802.11g WLAN or access to the latest online music over the cellular network."

The STLC4XXX family of single-chip devices will expand in Q1 2006 with an IEEE802.11b/g and a dual-band IEEE802.11a/b/g solution. Available in volume production, budgetary pricing for the STLC4370 is approximately $10 in quantities of 100,000 pieces.

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