Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1996-03-07
1998-09-08
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327513, 327362, H03L 500, H01L 3500
Patent
active
058050043
ABSTRACT:
An amplifier is connected to a voltage subtractor which is connected in a predetermined current path of the amplifier to adjust the temperature-dependent voltage offset of an amplifier or of an amplifier chain. If the voltage subtractor is connected at the output of the amplifier or of an amplifier chain, then the temperature-dependent offset voltage can be subtracted using suitable means, without the amplifier itself having to be compensated. As a voltage subtractor, an operational amplifier is proposed, in the case of which the offset voltage is subtracted by means of negative feedback. The negative feedback is produced by means of a resistor having two current power sources. The voltage subtractor is preferably connected in outgoing circuit to the amplifier and constructed in accordance with the same layout rules.
REFERENCES:
patent: 3992622 (1976-11-01), Numata et al.
patent: 4015149 (1977-03-01), Tsunekawa et al.
patent: 4914357 (1990-04-01), Valley
patent: 5030849 (1991-07-01), Brokaw
patent: 5144405 (1992-09-01), Naber
Barth Martin
Mueller Bernd
Tanten Leo
Robert & Bosch GmbH
Tran Toan
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