发明名称 |
Precision hysteresis generator |
摘要 |
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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申请公布号 |
US5798663(A) |
申请公布日期 |
1998.08.25 |
申请号 |
US19960697328 |
申请日期 |
1996.08.22 |
申请人 |
CHERRY SEMICONDUCTOR CORPORATION |
发明人 |
FUGERE, ROBERT H.;ALVERNAZ, JAMES |
分类号 |
H03K3/011;H03K3/0233;(IPC1-7):H03K3/037 |
主分类号 |
H03K3/011 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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