Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1997-05-23
1998-09-01
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, 327530, 327540, 323312, 323313, G05F 110
Patent
active
058015825
ABSTRACT:
Activatable/deactivatable circuit arrangement for producing an output reference voltage having a first transistor (T1) whose emitter is connected with a reference potential (M) and whose base and collector are connected with one another, having a second transistor (T2) whose base is connected with the base of the first transistor (T1), having a first resistor (R1) that is connected between the collector of the first transistor (T1) and an output terminal (U) for supplying the output reference voltage, having a second resistor (R2) that is connected between the collector of the second transistor (T2) and the output terminal (U), having a third resistor (R3) that is connected between the emitter of the second transistor (T2) and the reference potential (M), having a third transistor (T3) whose base is connected with the collector of the second transistor (T2) and whose emitter is connected with the reference potential (M), and having a controlled current source (T4) that is connected between a supply potential (V) and the output terminal (U), and that is coupled at the input side with the collector of the third transistor (T3), whereby the collector-emitter path of a fifth transistor (T5) is connected in parallel with the collector-emitter path of the third transistor (T3), and the base of the fifth transistor (T5) being driven by a switching signal (S).
REFERENCES:
patent: 5278491 (1994-01-01), Nitta et al.
patent: 5488329 (1996-01-01), Ridgers
patent: 5703476 (1997-12-01), Merlo et al.
patent: 5712556 (1998-01-01), Okamura
Japanese Abstract, vol. 18, No. 426, JP6131068, May 13, 1994.
P. Gray et al., "Analysis and Design of Analog Integrated Circuits", Second Edition, University of California, pp. 292-297.
Callahan Timothy P.
Kim Jung Ho
Siemens Aktiengesellschaft
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