Doug Lung /
04.26.2013 01:26 PM
Silicon Labs Unveils Complete ‘Radio-On-A-Chip’
New I.C. converts RF input to baseband audio output
The announcement by Silicon Labs of a complex radio receiver in a single chip that could—depending on model—provide an audio output from AM, FM or digital signals in the various broadcast and shortwave bands had me looking back on how far radio receivers have come since I once worked on AM car radios that used low-voltage tubes, tuned RF stages and a mechanical pushbutton system for storing station frequencies.

The Silicon Labs announcement revealed the new monolithic Si468x receiver I.C.s use software-defined-radio technology to provide an antenna input-to-audio output digital radio system capable of receiving FM, HD Radio, and DAB/DAB+ broadcasts for a wide range of audio applications ranging from inexpensive tabletop/clock radios to radios in mobile phones, tablets and personal navigation devices. The Si468x data page has details.

While it notes that: “The family offers all-in-one, ultra-low power, multi-band digital broadcast receivers to support global analog and digital radio standards including AM, SW, LW, FM, FM RDS, HD, DAB, DAB+, DMB, and DRM(30),” I only saw VHF inputs on the block diagram, and AM was not mentioned in the Si468x specifications. (AM/SW reception is available in the Si477x line of ICs.)

Samples and production quantities of the Si468x digital radio receivers are available, beginning at $5.62 in 10,000 unit quantities. An evaluation kit is available for $550.

Based on the evaluation kit’s manual, it appears it could be useful as a way to monitor radio reception parameters that are not available on conventional receivers. Distributors include DigiKey and Arrow Electronics.

Post New Comment
If you are already a member, or would like to receive email alerts as new comments are
made, please login or register.

Enter the code shown above:

(Note: If you cannot read the numbers in the above
image, reload the page to generate a new one.)

No Comments Found

Thursday 11:07 AM
The Best Deconstruction of a 4K Shoot You'll Ever Read
With higher resolutions and larger HD screens, wide shots using very wide lenses can be a problem because they allow viewers to see that infinity doesn’t quite resolve into perfect sharpness.

Featured Articles
Discover TV Technology