Sorry for the short title but I having that blank page bug and reducing the title was the only way to get past it.
So my question is:
When designing a current mirror, I know that a Widlar current source adds a Resistor in the emmiter of the transistitor Q2.
But why would you want to make both current be different? Wouldn't it defeat the purpose of a current mirror which is to replicate Iref in Iout?
Here's an image of the Widlar Current source:
Thanks in advance.
So my question is:
When designing a current mirror, I know that a Widlar current source adds a Resistor in the emmiter of the transistitor Q2.
But why would you want to make both current be different? Wouldn't it defeat the purpose of a current mirror which is to replicate Iref in Iout?
Here's an image of the Widlar Current source:
Thanks in advance.