| 摘要 |
An optical disk pickup system 400 using current mode signal transmission is disclosed. An operational amplifier 404 has an input for receiving an electrical signal and a feedback loop including a current path of a first transistor 405 of a first size, transistor 405 having a control terminal at a preselected voltage. A conductor 402 is coupled to an output of operational amplifier 404 for transmitting the electrical signal as a current. A second transistor 406 of a second size has a current path in series with a conductor 402 and a control terminal coupled to the preselected voltage, transistors 405, 406 forming a current divider.
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