| 摘要 |
A current mirror circuit has an input portion including a first transistor, which is adapted to establish a reference current. It also has an output portion including a second transistor, and a control portion between the input portion and the output portion. The control portion includes a third transistor coupled for controlling the second transistor to generate an output current which is a function of the reference current while inhibiting current leakage from the input portion to the output portion. A lowpass filter is included in the control portion to prevent noise in the input portion from influencing the second transistor.
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