Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1995-08-24
1997-11-18
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 77, 327205, H03K 5153, H03K 3037
Patent
active
056891997
ABSTRACT:
A comparator with hysteresis in bipolar technology having a voltage/current converter with a voltage input forming the comparator input connection, and a current output, a bistable current source with a current feeding connection coupled with the current output of the voltage/current converter and a current output connection forming the comparator output, the bistable current source being currentless in a first stable state and consuming current only in the second stable state, the firing current which must be fed to the current feeding connection to switch the bistable current source from the currentless state to the power-consuming state being different from the quenching current which must be fed to the current feeding connection to switch the bistable current source from the power-consuming state to the currentless state, to obtain a hysteresis of the comparator, and all transistors being formed as bipolar transistors. The entire power consumption of such a comparator can be made extremely low in one of its two switching positions.
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Carlson David V.
SGS-Thomson Microelectronics GmbH
Tran Toan
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