发明名称 |
Consumption current balance circuit, compensation current amount adjusting method, timing generator, and semiconductor testing apparatus |
摘要 |
A consumption current balance circuit reduces the layout area and suppresses the deterioration of accuracy of a delay time caused by a temperature variation due to a power variation of a delay circuit itself or caused by a load variation of a power supply. The consumption current balance circuit includes a delay circuit for giving a delay time to a timing pulse signal, a compensation circuit for interpolating the consumption current of the delay circuit, a ring oscillator provided in the same power supply area as the delay circuit; an output period counter for measuring the output period of the ring oscillator; and a heater circuit current amount adjusting circuit for adjusting the current amount of the heater circuit to minimize the difference in the output period between the stand-by state and the active state of the ring oscillator.
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申请公布号 |
US7558692(B2) |
申请公布日期 |
2009.07.07 |
申请号 |
US20050663793 |
申请日期 |
2005.09.14 |
申请人 |
ADVANTEST CORP. |
发明人 |
SUDA MASAKATSU;SUDOU SATOSHI |
分类号 |
G06F19/00;G01R31/28;G06F1/04;H03K5/13 |
主分类号 |
G06F19/00 |
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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