发明名称 |
Method and circuitry for generating reference voltages |
摘要 |
Method and circuitry for generating precise reference voltages. The method includes generation of a stair-step voltage waveform wherein the voltage changes from step to step are virtually identical. The stair-step voltage waveform generation includes charging a first capacitor to an available voltage reference and then transferring the charge to a larger second capacitor. This charging and subsequent charge transferring is repetitively performed to generate the stair-step waveform across the terminals of the larger capacitor. Sample-and-hold circuits are used to sample the steps of the stair-step voltage waveform and thereby provide a set of DC reference voltages. The circuitry is suitable for fabrication in a CMOS monolithic integrated circuit and can be used in conjunction with flash A/D converters.
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申请公布号 |
US4804863(A) |
申请公布日期 |
1989.02.14 |
申请号 |
US19860929711 |
申请日期 |
1986.11.12 |
申请人 |
CRYSTAL SEMICONDUCTOR CORPORATION |
发明人 |
WELLAND, DAVID R.;KERTH, DONALD A. |
分类号 |
H03M1/38;H03K4/02;H03M1/00;(IPC1-7):H03K4/02;H03K5/159;H03K5/00 |
主分类号 |
H03M1/38 |
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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