Dynamic Range of Current Mirror

[mohazaga]

Hi ,,,

Well, for normal topology CM , it's can used for low output resistance (not main issue in the design) because it has excellent output dynamic range.
can u help to explain that by more detail?
thanks

 

[rajanarender_suram]

The Vds drop on o/p transistor can be as low as (vgs-vt) .if u keep this vgs-vt minimum than vds req to keep the transistor becomes low, therefore your dynamic range of the ckt that is connected to this mirror increases becaus the voltage consumed by mirror becomes low

 

[A.Anand Srinivasan]

well the current remains constant over a certain voltage range and hence the dynamic range of current mirror is more....