[hpsdr] FETs in mixers

Jerry no2t at arrl.net
Wed Jan 17 19:09:50 PST 2007


Hi
	How do they drive the gates? Push-Pull?

		de Jerry NO2T
At 11:54 PM 1/17/2007 +0100, you wrote: 
>>>>
***** High Performance Software Defined Radio Discussion List ***** 

FRANCIS CARCIA wrote: 
 I just picked up some SD5000s from a friend who bought a bunch so they are
still around. One could always stack two of them for more current. gfz
The new FT-2000 from Yaesu uses an SPM5001 as mixer, which is also a quad
FET IC.  From the part number it looks like it could be the follow-on of
the SD5000.
This is the relevant part of the FT-2000 mixer schematic :



73  Alberto  I2PHD


Attachment Converted: "E:\Eudora\Attach\spm5001.gif" 
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