Programmable current source

cocopa1

Sep 22, 2010
9
Joined
Sep 22, 2010
Messages
9
Hi everyone,i want to make a programmable current source/sink (source or sink depending on a digital signal) but i am a beginner and i don't have a clue...It has to provide 0-10uA,10 bits resolution,can anyone help???

 

Hero999

Oct 28, 2007
2,433
Joined
Oct 28, 2007
Messages
2,433
USA a DAC to convert the digital signal to a voltage i.e. 0 to 5V which is connected to a transconductance amplifier, a 500k resistor will give 0 to 10

 
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