Electronics > Beginners

Square wave generation & current

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T3sl4co1l:
Again, what is the driver connected to?

bson:
You can use differential output amplifier, for example http://www.ti.com/product/THS4532/description (or the slightly cheaper THS4531A).  Use it as a 1x single ended to differential buffer and attenuate the input as needed to get the right output level.  If you need to shape the square wave put an inverter in front of the attenuation, and if polarity matters simply reverse the outputs.

zanzeoo:
Nice but not sure it can drive a 33 ohms load  alone ??? i guess it needs a transformer at output ?

bson:

--- Quote from: zanzeoo on October 09, 2018, 10:50:28 pm ---Nice but not sure it can drive a 33 ohms load  alone ??? i guess it needs a transformer at output ?

--- End quote ---
The datasheet states 50mA max, so it should be fine for 1Vpp, although I suppose only with the single unit THS4531A.

bson:
Ah, nvm, it's +/-25mA for the two outputs, so 50mA total, while you need a 31mA output.  What's up with the 33Ω load?  That's pretty weird.  Maybe just some low voltage bridge driver?

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