Patent ID: 6924701

Claim:
An amplifier for amplifying an input signal, and the amplifier comprising: a current source; a current sink; and at least one compensated pair of cascode coupled transistors coupled between the current source and current sink and including: an input transistor having a current interface and a control interface coupled to the input signal to regulate current flow between the current sink and current source, and the input transistor exhibiting a first transition frequency; a cascode transistor having a current interface cascode coupled to the current interface of the input transistor and exhibiting a second transition frequency less than or equal to the first transition frequency of the input transistor, and a bypass element coupled across the current interface of the cascode transistor to substantially bypass the cascode transistor proximate a pole frequency thereof, whereby current flows between the current source and sink via both the input transistor together with the cascode transistor across a low frequency portion of the range of frequencies below a pole frequency of the cascode transistor and via the input transistor and the bypass element across a high frequency portion of the range of frequencies above the pole frequency of the cascode transistor.