| 摘要 |
<p>An operational amplifier comprises a first stage (2) and a second stage (3) with an input connected to an output (Voi) of the first stage (2) and an output (Out) connectible to a load (RL), the second stage (3) comprising, between its input and its output, a first signal path (M5) for driving the load (RL) in a first direction, and a second signal path (M8, M3, M1, M2, M4) for driving the load (RL) in the opposite direction. The first and second signal paths have substantially equal gains for small signals, substantially equal output impedances for small and large signals, and substantially equal output-current capabilities. <IMAGE></p> |
