Scalable current mirror?

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Octago

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Hi,

I want to design a scalable current mirror, is there any way to externally control the scale of a current mirror by injecting a current signal or some other methods?

thanks
 

Basically, introducing an offset voltage in a non-degenerated bipolar current mirror creates a scale factor and may operate as a simple kind of multiplier. You should evaluate possible circuits by yourself to see the limitations.
 

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    Octago

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thanks, but for CMOS current mirror, is there any similar design?
 

possibly you can increase the number of output multiplier using switches...
 

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    Octago

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thanks

If possible, could you please give me any detailed information or reference on this implementation?




ashish_chauhan said:
possibly you can increase the number of output multiplier using switches...
Click to expand...
 

this can be the simplest implementation see the attaced file.

 

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    Octago

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U can see any book on DAC, they usually use similar topologies. Just change the logic and use it as per convinience to get a scaled current according to the input control voltage
 

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