Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1995-07-07
1999-03-09
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327538, 327543, 323313, 323315, 323316, 323317, H03K 1716
Patent
active
058806245
ABSTRACT:
When an intermediate potential is required inside a semiconductor device, the constant potential generating circuit can output a stable potential, while maintaining a high driving capability, so that the controllability of the semiconductor device can be improved. The constant potential generating circuit comprises a first output circuit composed of two transistors P16 and N16 for supplying an intermediate output potential V.sub.out to a load; a second output circuit composed of two transistors P11 and N11 for outputting a voltage corresponding to the output potential V.sub.out to a node 13; a resistor R11 interposed between an output point of the output potential V.sub.out and the node 13; and a differential amplifier circuit Ad for comparing the voltage at the node 13 with the reference potential V.sub.ref to apply control signals to the transistors P11, N11, P16 and N16, respectively. In response to the control signals applied from the differential amplifier circuit Ad, the response speed of the second circuit composed of the transistors P11 and N11 is determined higher than that of the first circuit composed of the transistors P16 and N16. Therefore, when the output potential V.sub.out changes relative to the reference potential V.sub.ref, the gate control signals are outputted from the differential amplifier circuit Ad, by comparing the voltage at the node 13 (at which the response speed is high in response to the control signals) with the reference potential V.sub.ref, so that the output potential V.sub.out can be controlled at a stable point at high
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Hataoka Kazuhiro
Koyanagi Masaru
Callahan Timothy P.
Kabushiki Kaisha Toshiba
Luu An T.
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