SI4455-B1A-FM Silicon Laboratories Inc, SI4455-B1A-FM Datasheet

SI4455-B1A-FM

Manufacturer Part Number

SI4455-B1A-FM

Description

SI4455-B1A-FM

Manufacturer

Silicon Laboratories Inc

Datasheet

1.SI4455-B1A-FM.pdf (7 pages)

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How to Simplify the Addition of Wireless Connectivity to Your Embedded Design

Wireless connectivity continues to expand quickly across all industries as wider varieties of electronic

devices and appliances add wireless controls and communications. Consumers are used to the

convenience that these RF additions offer, and wireless functionality is becoming a basic requirement for

most electronics products. However, implementing wireless connectivity is seldom easy. RF

considerations, such as antenna design and modulation settings, can be very different from the

requirements of traditional on-board controls. Additionally, regulatory standards and consumer

expectations mean it is essential to achieve good wireless performance. Most inexpensive wireless

solutions use very basic components that have poor performance and are difficult to implement. Solutions

that are simple to implement often don’t have the flexibility needed for good performance, and these

seemingly simple solutions can also be costly. Fortunately, it is possible to find wireless solutions that

offer high performance, ease of use and low cost, if you know what to look for.

Regulatory Compliance

Frequency Usage: Regulatory bodies in each country or region set the most basic performance

requirements for wireless systems. These agencies regulate the frequencies on which a given application

may operate, the magnitude of radiated emissions and, in many cases, the timing of the transmissions.

The specific standards vary widely since each region has allocated the available radio spectrum

differently. In the U.S., most applications using an unlicensed band will be operating under FCC Part

15.231 (260-470 MHz), FCC Part 15.240 (433.5-434.5 MHz) or FCC Part 15.247 and 15.249 (902-928

MHz). In Europe, these applications must comply with ETSI EN 300-220 (138.2-138.45 MHz, 433.05-

434.45MHz and 863-870 MHz). Elsewhere, different local standards, such as ANATEL in Brazil and ARIB

in Japan, will apply.

Figure 1. Unlicensed Bands around the World

Silicon Laboratories, Inc.

Rev 1.0

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