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Powering low-power RF products

Posted: 22 Sep 2009 ?? ?Print Version ?Bookmark and Share

Keywords:low power RF? RF products power? wireless systems?

Using linear voltage regulators is often the first choice when designing a low-power wireless system, since the board space is often limited and a good power supply ripple rejection can be achieved. Considering system efficiency, especially for battery powered applications, a switch mode DC/DC converter might be a better choice.

DC/DC converters generate switching noise and can potentially affect the RF performance. This application note gives an introduction to linear voltage regulators and DC/DC converters, and how they influence both performance and efficiency. Furthermore, some of Texas Instruments' low power wireless products are tested in combination with its low-power DC/DC converters. The last section gives an overview of the main design consideration when using DC/DC converter for low power wireless applications.

View the PDF document for more information.

Click here to view related datasheets.

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