LF: Re: Simple PIC based DDS for VLF

To:	[email protected], [email protected]
Subject:	LF: Re: Simple PIC based DDS for VLF
From:	Andy Talbot <[email protected]>
Date:	Sun, 6 Feb 2011 11:44:56 +0000
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Or just the description without having to wade through the complete zip file...

http://www.g4jnt.com/PIC_DDS.pdf

'JNT

On 5 February 2011 18:57, Andy Talbot <[email protected]> wrote:

9kHz OPs may be interested in this DDS suitable for audio/ VLF using just a 16F628 PIC, , R-2R ladder and op-amp filter. It can generate frequencies up to about 40kHz with typical DDS high resolution / frequency steps, (higher if you overclock the device) offers two-tone FSK operation by toggling a single input line (ideal for DFCW), The two frequencies are stored in non-volatile memory and are user-programmable from an RS232 interface using ASCII text based commands.

See www.g4jnt.com/PIC_DDS.zip for full details.

Andy

www.g4jnt.com

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