SparkFun Forums 

Where electronics enthusiasts find answers.

Have questions about a SparkFun product or board? This is the place to be.
By BigPilot
I noticed that most projects using the Si470x tuner breakout are using 3.3V to drive the board. However, in the Si4702 datasheet I noticed that it can be powered by 5V. Is it safe to use it with a 5V microcontroller such as the Teensy 2.0 (AVR) I'm using?
By BigPilot
Also, the schematic says: '2.7V < VCC < 3.3V', implying that the board cannot be powered by 5V.
I would say no.
Look at the data sheet again. VD and VA can be 5 volts. The VIO voltage is rated 1.5 to 3.6 volts.
The schematic shows VD,VA and VIO are all on one voltage input connection.
By BigPilot
Yeah, you're right. VIO has an absolute maximum rating of 3.9V.

Luckily, I still have a couple of Sparkfun level converters lying around. ;)
long long title how many chars? lets see 123 ok more? yes 60

We have created lots of YouTube videos just so you can achieve [...]

Another post test yes yes yes or no, maybe ni? :-/

The best flat phpBB theme around. Period. Fine craftmanship and [...]

Do you need a super MOD? Well here it is. chew on this

All you need is right here. Content tag, SEO, listing, Pizza and spaghetti [...]

Lasagna on me this time ok? I got plenty of cash

this should be fantastic. but what about links,images, bbcodes etc etc? [...]