Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1996-08-22
1998-08-25
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327 74, H03K 3037
Patent
active
057986630
ABSTRACT:
A hysteresis generator for providing a comparator with a precision hysteresis reference input. An output of the comparator controls a switch which determines whether or not a reference current is applied to a resistor. The resistor is connected between a reference voltage and an input to the comparator. A buffer amplifier provides the reference voltage to the resistor. The reference current is taken from a second resistor connected between the output of the buffer amplifier and the input of a current mirror. The current mirror applies its output current to the first resistor. A diode may be inserted between the output of the buffer amplifier and the first resistor to make the hysteresis voltage generated by the current applied to the first resistor substantially temperature independent.
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patent: 5519548 (1996-05-01), Liepe et al.
patent: 5610545 (1997-03-01), Jenkins et al.
Horowitz et al., "The Art of Electronics," Cambridge University Press, published 1980, p. 102.
Alvernaz James
Fugere Robert H.
Cherry Semiconductor Corporation
Tran Toan
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