发明名称 |
Redundant resistor matching detector with constant percentage threshold |
摘要 |
A redundant resistor matching detector is provided with constant percentage threshold. The redundant resistor matching detector includes a voltage reference and a first operational amplifier, a second operational amplifier, a first potentiometer and a reference potentiometer. The first operational amplifier has a first input connected to a first potentiometer. The second operational amplifier has a first input connected to the reference potentiometer. The first operational amplifier and the second operational amplifier have a reference input coupled to the voltage reference. An input current mirror is coupled to the first potentiometer providing a first current. A first reference current mirror is coupled to the reference potentiometer providing a reference current. A second reference current mirror has an input coupled to a first output of the first reference current mirror and has a first output coupled to an output of the input current mirror. A pair of series connected resistors are connected between a second output of both the first reference current mirror and the second reference current mirror. A resistor is connected between a junction of the pair of series connected resistors and the first outputs of the input current mirror and the second reference current mirror.
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申请公布号 |
US6208152(B1) |
申请公布日期 |
2001.03.27 |
申请号 |
US19990418545 |
申请日期 |
1999.10.14 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BAUMGARTNER STEVEN JOHN;DEMSKY KEVIN PAUL;THATCHER RAYMOND JONATHAN |
分类号 |
G01R27/08;(IPC1-7):G01R19/00 |
主分类号 |
G01R27/08 |
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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