Cambridge Silicon Radio Launches Wi-Fi Chips

Nov. 19, 2004
Building on its position as a leading supplier of Bluetooth integrated circuits (ICs), Cambridge Silicon Radio (CSR) has announced a family of single-chip Wi-Fi devices for use in cellular telephones and other consumer products. The ICs combine has ...

Building on its position as a leading supplier of Bluetooth integrated circuits (ICs), Cambridge Silicon Radio (CSR) has announced a family of single-chip Wi-Fi devices for use in cellular telephones and other consumer products. The ICs combine has many as three Wi-Fi standards, such as IEEE 802.11a/b/g, in a single device. The company's first Wi-Fi products are the UniFi-1 Portable (802.11b/g, single band) IC in a miniature package for cellular telephones and the UniFi-1 Consumer (802.11a/b/g, dual band) IC aimed at both cellular telephones and other consumer electronics applications.

The UniFi-1 Portable device is available in a 5.8 x 6.4 mm CSP housing while the UniFi-1 Consumer device is available in an 8 x 8 mm BGA package. CSR achieved the size reductions by integrating the RF, modem, baseband, and media access controller (MAC) into a single chip. CSR has also eliminated the need for external flash memory since the consumer version contains an integrated flash memory. Because the UniFi solutions do not rely on a host processor, they are also ideal for embedding Wi-Fi functionality into consumer electronics devices such as DVD or video players and plasma screens. The UniFi-1 solution is priced at less than $8.00 (US), or less than alternative multiple-chip solutions. Because the UniFi-1 device requires few external components, it also features a low bill of materials (BOM) or less than $1 (US).

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About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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