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Adjustable current source

Question asked by Unai on Aug 22, 2014
Latest reply on Aug 26, 2014 by Unai

Hi,

I want to design an adjustable current source.

Maximum current: 500mA

Minimum current: 100mA.

 

I have seen the application note AN-968. http://www.analog.com/static/imported-files/application_notes/AN-968.pdf

I am thinking of using a DAC and the circuit in figure 5.

I have tried to simulate with LTspice, but i doesn't work,

Is the schematic correct? I am not able to understand the feedback.

current circuit.JPG

 

Thanks,,

 

Unai Goyarrola

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