发明名称 |
Unity gain positive feedback integrator with programmable charging currents and polarities |
摘要 |
An integrator includes a capacitor and a bootstrap circuit for detecting any leaking charge from the capacitor and replacing it. The integrator also includes a charge injection circuit for adjusting the charge applied to the capacitor in response to a digital control input to the charge injection circuit. The bootstrap circuit has two transistors to sense leaking charge, and two further transistors forming a differential pair. The bootstrap circuit uses positive feedback and unity gain to replenish the lost charge.
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申请公布号 |
US5498992(A) |
申请公布日期 |
1996.03.12 |
申请号 |
US19940358031 |
申请日期 |
1994.12.14 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
LAI, BENNY W. H.;WALKER, RICHARD C. |
分类号 |
G06G7/184;(IPC1-7):H03K4/58;H03K4/52;H03K4/56 |
主分类号 |
G06G7/184 |
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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