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Transceiver modules support seven operating channels

Posted: 13 Sep 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Vishay? RFWaves? RFW3M? RFW8M? transceivers?

Vishay's RFWaves ISM transceivers

Vishay Intertechnology Inc. has announced new family of a 2.4GHz ISM transceiver modules that supports seven operating channels, each spread with a unique direct sequence spread spectrum (DSSS) code. According to the company, the new modules feature high data rate, wide operating voltage and wide temperature range. These devices are intended for a variety of wireless applications, including load cells and weighing systems, strain gages, transducers and sensors, VoIP systems and audio/video systems.

These RFWaves transceivers operate over 2.5-3.6V and feature a channel switching time of 60?s and data rate of up to 8Mbps. A combination of fast wakeup and lockup times of 60?s and 1 ?s, respectively, enables an efficient power consumption management method of switching the transceivers off for even very short periods of time without impairing performance, particularly useful in ultralow-power products, the company explained. Vishay claims these modules are the industry's first multichannel, 2.4GHz DSSS transceivers that integrate this combination of features.

The company said these modules' high data rate enhances data transmission quality, enables the transceivers' use in applications requiring a high bandwidth and provides a more robust communications link and capability to handle more complex network scenarios than the lower-rate alternatives currently on the market.

Two versions of the modules are available: the RFW3M with a data rate of 3Mbps and the higher-end RFW8M with an 8Mbps data rate. The modules have an indoor communication range of up to 20m, which can be doubled with a power amplifier. Promising robust performance, both devices are designed to coexist with 802.11b/g, Bluetooth and other wireless networks. The modules offer a simple 3-wire-bus digital interface. Overall, the modules include 15 interface pins and can be soldered on a motherboard like a standard SMT component, enabling product integration. Designers do not need to have any knowledge of RF systems in order to integrate these devices into their products. Extensive application notes and design documents, as well as a very easy-to-use evaluation kit, are available for system-level integration.

The modules operate over the temperature range of -40C to 85C, suitable for industrial applications. They are RoHS-compliant and meet FCC, CE, ETSI and other worldwide regulations and standards.

Samples and production quantities of the 3Mbps RFW3M are available with lead times of 12 weeks for larger orders. Samples of the RFW8M will be available in Q4 2006.

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