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Are there any 30$ ish amplifier modules for up to 500kHz?

(1/1)

eTobey:
I am thinking of using it with a functiongenerator.
I would be happy with 2W, and +- 5V.

coromonadalix:
but not 30 ish  :palm:  and too high power ....

https://www.aliexpress.com/i/4000019808949.html

https://www.aliexpress.com/i/4000590155430.html


and some can be found on fleabay ?  some have gain controls ?
50khz   ??
https://www.ebay.ca/itm/182412356272?

Feeltech FPA series

eTobey:
Thanks for those links.
The first item is denied by ali express in my country!  :rant:

The juntek has 2x gain? Can it be disabled without compromising the performance?

voltsandjolts:
Schematic is here:

https://www.eevblog.com/forum/testgear/juntek-dpa-2698-10mhz-signal-amplifier-digilent-analog-discovery/msg3649978/#msg3649978

Minimum non-inverting gain on the LM7171 is specified as +2

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