18 Jan 2015

Crystal alternative?

Buying crystals for specific frequencies is now getting very expensive. There may be a newer alternative.

See https://aa7ee.wordpress.com/2015/01/12/a-crowdfunded-si5351-breakout-board-from-jason-nt7s/ .

This synthesised solution allows any frequency from 8kHz to 160MHz to be generated.
at 18:57
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2 comments:

Anonymous said...

Hans has a Si5131 kit with a 27MHz crystal for under a fiver. This is a much better bet than the Si570, it is a lot cheaper and has the three separate output channels, the most difficult bit- soldering in the Si5131- is already done. The board needs to be programmed, an arduino can do that.

The IC is under a quid from RS but it is VERY SMALL and needs an external crystal but is a remarkable example of just what you can put on a chip. You could do all of the frequency synth for a comms Rx with one chip, 1st Lo, conversion osc and cio all for a quid!

As you can go up to 160MHz VHF and UHF synths become easy. So these kits could form the core of some great new projects.

Alan
G8LCO

Mon Jan 19, 12:11:00 am GMT
Roger G3XBM said...

Yes there must be alternatives. Thank you for pointing this one out Alan.

Mon Jan 19, 09:33:00 am GMT

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