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DAC with negative output voltage

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Meach

New Member
Hello,

I am currently looking for a solution to generate a negative voltage (at most -2V) from a 8-bit DAC.

I need to generate three negative voltage and I have a very low space restriction.

For that reason, instead of just using three voltage inverters after their related regular DACs, I am thinking if it is possible to use only one voltage inverter.
This voltage inverter will then be used to get a negative voltage that will be connected to dual power supply DAC (whose +/- supply votlage will be inverted).

What do you think about this? Is it possible to do such a thing? and do you have ideas that can help me?

Thank you,

Meach
 

dougy83

Well-Known Member
If you have a positive and negative supply available, you can feed the DAC output into an opamp to scale and shift the voltage so that it can range from the negative rail to the positive rail.
 

Meach

New Member
Thank you for your answer dougy83.
I was thinking of the same thing but I wanted to know if some special DAC could generate negative voltage......because I want to use as less component as possible.
 
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