CIRCUIT ARRANGEMENT FOR PRODUCING A D.C. CURRENT

专利名称：CIRCUIT ARRANGEMENT FOR PRODUCING A

D.C. CURRENT

发明人：DICK, Burkhard,WICHERN, Andreas申请号：EP97905343.6申请日：19970311公开号：EP0826167B1公开日：20030604

摘要：A description is given of a circuit arrangement for producing a D.C. current,comprising a current-source stage, which is supplied on one input with a measuringcurrent led via an input resistor, and which comprises a current source transistor whosebase-emitter path is arranged in parallel with the input resistor and whose collectorelectrode forms an output of the current-source stage, on which output an outputcurrent is offered, a current mirror stage for mirror-inverting the output current of thecurrent-source stage to a working impedance, on which working impedance a controlvoltage is produced in response to this output current, a current bank having a controlinput which is supplied with a control voltage, and having at least two outputssimultaneously controlled by the control voltage, on which outputs mutually

proportional currents are offered of which a first current forms the measuring current. Asa result, a current reference is created which can be used for very low supply voltages,preferably around 0.9 volt, is simple, shows a stable operating behavior and produces areference current that has a negative temperature coefficient.

申请人：KONINKL PHILIPS ELECTRONICS NV,PHILIPS INTELLECTUAL PROPERTY

地址：NL,DE

国籍：NL,DE

代理机构：Peters, Carl Heinrich, Dipl.-Ing.

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