22) 캐스코드와 전류거울3 [라자비 전자회로]

- Temperature and Supply Depedence of Bias Current

- Concept of Current Mirror ( temperature / supply에 덜 민감 )

 

- BJT Current Mirror

- Multiple Copies of I(REF)

- example

 

- Mirroring Error Due to Base Currents

Improved Mirroring Accuracy ( error 줄인다. )

Example

 

- PNP Current Mirror

 

- MOS Current Mirror (BJT와 동일)

Example

 

- CMOS Current Mirror