发明名称 |
Comparator circuit and infrared signal receiving apparatus |
摘要 |
The present invention has an object to control easily the pulse width of an output by operating a limiting circuit appropriately-even if the power voltage is low. A limiting circuit is provided on the input side of a hysteresis comparator circuit to prevent saturation. A limit voltage Vlimit is set by a bias circuit so as to change in accordance with the operation of the hysteresis comparator circuit. When an input voltage Vsig exceeds a hysteresis threshold voltage Vth, the limit voltage Vlimit is dropped in response to a drop of the hysteresis threshold voltage Vth. Thus, the width of the pulse width can be controlled while maintaining the condition that the limit voltage Vlimit is higher than the hysteresis threshold voltage Vth.
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申请公布号 |
US2003112037(A1) |
申请公布日期 |
2003.06.19 |
申请号 |
US20020293563 |
申请日期 |
2002.11.14 |
申请人 |
INOUE TAKAHIRO;YOKOGAWA NARUICHI;NISHINO TAKESHI |
发明人 |
INOUE TAKAHIRO;YOKOGAWA NARUICHI;NISHINO TAKESHI |
分类号 |
H03K3/0233;H03K3/2897;H03K5/08;H03K5/24;H04B10/155;(IPC1-7):H03K5/153 |
主分类号 |
H03K3/0233 |
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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