US Patent 11385668 Configurable offset compensation device

An offset compensation device includes a first bias module and a second bias module. The first bias module includes a plurality of first current control circuits and a plurality of second current control circuits coupled in parallel. Each of the first current control circuits generates a first reference current, and each of the second current control circuits generates a second reference current. The second bias module includes a plurality of third current control circuits and a plurality of fourth current control circuits coupled in parallel. Each of the third current control circuits generates a third reference current, and each of the fourth current control circuits generates a fourth reference current. The second reference current is greater than the first reference current, and the fourth reference current is greater than the third reference current.