SAN JOSE -- At the Wireless Symposium here, Intersil Inc. today unveiled a new baseband processor chip that features improved multipath performance and doubles the effective range when incorporated into Intersil's existing PRISM II LAN/WAN chip set.
Intersil claimed the new HFA3861B is the industry's first IEEE 802.11-compliant 11-megabits-per-second baseband processor to offer a short preamble option. Featuring a RAKE receiver (an advanced function used in high-end mobile phones to reduce interference and improve performance by resolving the signal multipath problem) and short preamble option, the Intersil chip deliversincreased throughput and extended range -- important for large office and factory environments.
The HFA3861B is a drop-in replacement to the HFA3861A, Intersil's original PRISM II baseband processor, and comes with a firmware upgrade. Customers can easily upgrade their WLAN system performance without having to perform board layout changes. It delivers an 11 Mbps data rate through use of Complementary Code Keying technology, the modulation technique used in the approved IEEE 802.11b high rate standard.
"Across the board, enterprise IT managers agree that two key features are necessary for wireless office networks to become a reality: fast data rates that match the speed of wired networks, and product interoperability," said Larry Ciaccia, vice president and general manager of PRISM wireless products at Intersil.
"In the home space, robust radios are absolutely essential to enable voice and video applications. The HFA3861B meets those needs in both markets by delivering robust, high-data-rate performance backed by a global interoperability standard."
The HFA3861B can be configured through a general-purpose control bus to fit a broad range of wireless applications. Along with the other four chips in the PRISM II family, the HFA3861B can serve as a transceiver for high-performance wireless applications including enterprise
and IEEE 802.11 WLANs, PCMCIA wireless transceivers, RF modems, TDMA packet
protocol radios, wireless bridges and a variety of portable RF-based devices.
Housed in a plastic thin quad flat package (TQFP) suitable for PCMCIA board applications, the HFA3861B is available now in sample and production quantities for $11.57 each in 10,000-piece quantities. An evaluation board is also available.