Global Sources
EE Times-India
Stay in touch with EE Times India
EE Times-India > RF/Microwave

I/O modules promises ease of 802.11n adoption

Posted: 04 Jan 2010     Print Version  Bookmark and Share

Keywords:802.11n  Wi-Fi  wireless connectivity  embedded systems 

Connect-io-n module

Redpine Signals Inc. unveils the Connect-io-n series of highly-integrated single-stream 802.11n Wi-Fi I/O modules that provides future-proof wireless connectivity for embedded systems, particularly those involved in connecting the Internet of Things. The technology offers self-contained single-stream 802.11n modules at a smaller size, lower cost and lower power than legacy 802.11b and 802.11g modules, thus paving the way for widespread adoption of the 802.11n standard.

The products include the RS9110-N-11-23, a self-contained 2.4GHz Wi-Fi client device with a standard serial or SPI interface to the MCU host; the RS9110-N-11-24, a fully contained 2.4GHz Wi-Fi client device with networking stack included; the RS9110-N-11-27, a dual-band 2.4/5GHz Wi-Fi client device with a standard serial or SPI interface to the MCU host; and the RS9110-N-11-28, a dual band 2.4/5GHz Wi-Fi client device with networking stack included.

Wireless connectivity for embedded devices is typically characterised by low throughput, low power consumption, and relaxed latency requirements. However, Wi-Fi embedded devices are seen in ever greater numbers in a variety of environments, many of which are 802.11n-based. Legacy 802.11b/g devices and 802.11b devices in particular, cause considerable disruption to an 11n network. First, they occupy the airways far longer to transmit a given amount of information than other nodes in the network. Second, they force the Access Point—and all nodes on the network—to adopt bandwidth-consuming protection mechanisms to accommodate the legacy device. The explosive growth in adoption of Wi-Fi into embedded devices has prompted major industry groups, such as the Wi-Fi Alliance, to start disallowing 802.11b devices in upcoming certification programs such as Wi-Fi Direct, the specification to support direct Wi-Fi connections between devices.

Redpine's modules are the first in the industry to bring single-stream 802.11n connectivity to standard 8bit MCUs. Aimed at plug-and-play integration of Wi-Fi into such platforms through an SPI or UART interface, these modules are available in software variants that can either provide a built-in TCP/IP stack or enable the use of the MCU's networking stack.

The Connect-io-n series is based on Redpine's mature Lite-Fi chipset, the industry's first Wi-Fi certified 802.11n single-stream device, which has been successfully integrated into a significant number of embedded systems over the past two years. Connect-io-n modules have best-in-class transmit power of 18dBm and receiver sensitivity down to -98dBm, enabling excellent range. With shutdown power of less than 0.01mW, associated mode power of less than 3mW and active operational power of less than 30mW

Comment on "I/O modules promises ease of 802.11n..."
*  You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.


Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

Back to Top