WLAN :: AR9271
The AR9271 single-chip USB solution features Atheros Align® technology which leverages the 802.11n 1–stream specification to provide the optimal upgrade path from legacy 802.11 solutions. The single-stream feature enables a new class of Wi-Fi devices that deliver performance enhancements over the existing 802.11g technology, at comparable price points. Align® solutions are forward compatible to higher-performance, multi-stream, MIMO–based 802.11n, and are available in reference designs to serve the networking, PC and consumer electronics markets. The enhanced throughput of Align 1–stream solutions improves network efficiency by occupying the wireless channel for shorter periods than slower 11g devices – reducing congestion and increasing capacity for additional wireless devices. Align employs all the mandatory and select optional features of the 11n specification, and Atheros’ advanced radio design techniques, to effectively double the wireless coverage over legacy WLAN.
The Atheros AR9271 single-chip USB solution provides enhanced Wi-Fi performance and value for home gateways, set-top boxes, gaming consoles, printers and a variety of other embedded wireless products. The solution can also be integrated into wireless USB adapters for notebooks and desk- tops, to enable simple, low-cost performance upgrades on legacy PCs. The AR9271 WLAN USB single chip features a new architecture that integrates both a CPU and memory to run more of the wireless LAN func- tion on-chip. Unlike competitive 11g and 11n USB solutions, the Atheros integrated CPU offloads the wireless processing overhead from the host appliance. This design breakthrough enables consumer electronics devices with host processors not originally intended to support wireless functions, to now offer robust Wi-Fi performance. With the AR9271’s innovative host offload capability, the WLAN operates autonomously and enables the main device application to operate seamlessly.
- Single-chip, 802.11n compliant wireless LAN client solution with integrated both a CPU and memory to run more of the wireless LAN function on-chip
- Intergrated RF front end with high-output PA, LNA, Rx/Tx switch
- Internal diversity switch which selects antenna 1 or 2 for baseband signal processing
- Enables PHY rate of up to 150 Mbps
- Based on fourth-generation 802.11n compliant technology
- Compliant with IEEE 802.11b, 802.11g, 802.11d, 802.11e, 802.11i, and 802.11n
- Lead-free RoHS compliant