Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1996-08-13
1998-07-14
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327362, 327538, 323315, 323317, 330288, G05F 302
Patent
active
057810613
ABSTRACT:
A current mirror circuit includes a current input terminal; a first FET and a second FET, each having a gate terminal, a drain terminal, and a source terminal, the gate terminal of the first FET being connected to the gate terminal of the second FET; a third FET having a source terminal connected to the drain terminal of the first FET, and a drain terminal and a gate terminal connected to each other and to the current input terminal; and a fourth FET having a source terminal connected to the drain terminal of the second FET, a gate terminal connected to the gate terminal of the third FET, and a drain terminal serving as a current output terminal. Therefore, even when the output voltage varies, since the current is almost constant, the circuit is not adversely affected by the variation in the output voltage. As a result, error in the output current in response to variations in the output voltage is significantly reduced.
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Miyashita et al., "A GaAs LD Driver IC For A 2.5 Gb/s Optical Communication System", 24th European Microwave Conference, vol. 2, Sep. 1994, pp. 1649-1654.
Miyashita Miyo
Yamamoto Kazuya
Mitsubishi Denki & Kabushiki Kaisha
Wells Kenneth B.
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