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AM/FM receiver gives analog radios digital efficiency

Posted: 11 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:FM/AM receiver? analog radio? digital?

Si4830 AM/FM receiver

Silicon Laboratories Inc. has introduced the Si4830 AM/FM receiver, which brings the benefits of digital performance and integration to mechanically-tuned analog radios.

The new Si4830 AM/FM receiver IC reduces product design time and system cost and streamlines manufacturing for a wide range of radio products such as portable radios, boom boxes, clock and lamp radios, toy radios and give-away radios.

The Si4830 is claimed to be the first CMOS wheel-tuned AM/FM radio receiver IC, offering a full AM/FM radio from antenna input to audio output in a single small chip. Its high level of integration reduces the existing solution component count by more than 80 percent. Using the Si4830 eliminates the need for external microcontrollers, AM/FM filters, tuning inductors and other components, significantly reducing material and labor costs. Developers need only add an antenna, mechanical-tuning and off/on volume wheels, amplification and two AAA batteries, and the Si4830 receiver becomes the platform for a low-cost radio design.

The Si4830 AM/FM receiver targets radio manufacturers worldwide, especially those based in China. The world's manufacturing center for AM/FM radios using traditional analog technology, China still produces more than 100 million analog radio units per year for worldwide shipment. These analog-intensive radio designs typically require dozens of discrete components and undergo significant rework and manual tuning during manufacturing and assembly. The Si4830 requires only twelve surface-mount components within a compact, 20mm x 20mm single-side board area. This small design and simple board configuration further reduce cost and enable AM/FM functionality to be propagated into even more end products.

"Many manufacturers of mechanically tuned AM/FM radios have had no alternative to the labor-intensive, discrete method of building and manufacturing low-cost radios," said Dave Bresemann, VP of Silicon Labs' broadcast products. "Our mixed-signal Si4830 receiver makes cutting-edge digital radio technology available to the analog, mechanically tuned radio market, creating new opportunities for customers to reduce manufacturing cost and add AM/FM radio functionality to a variety of consumer electronics products."

The Si4830 supports European EN55020 compliance and delivers simple, accurate and reliable tuning for worldwide FM bands from 64MHz to 108MHz and AM bands from 520kHz to 1710kHz.

The Si4830 AM/FM receiver is available today and priced at $2.10 in 10K quantities in a 24-pin SSOP package. The Si4830-DEMO demonstration kit, designed to speed product evaluation and development, is available for a suggested retail price of $50.

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