Chip for generating constant reference current
The invention provides a chip for generating a constant reference current. The chip comprises a first circuit, a current mirror, an adjustable resistance array circuit, a second circuit, a clock circuit and a switching circuit. The first circuit is used for outputting a reference voltage. The curren...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a chip for generating a constant reference current. The chip comprises a first circuit, a current mirror, an adjustable resistance array circuit, a second circuit, a clock circuit and a switching circuit. The first circuit is used for outputting a reference voltage. The current mirror is connected with the first circuit. The adjustable resistance array circuit is connected with the first circuit. The second circuit is connected with the first circuit. The second circuit is connected with the adjustable resistance array circuit. The clock circuit is connected with the second circuit. The switching circuit is connected with the current mirror. The switching circuit is connected with the second circuit. The switching circuit is connected with a first capacitor. The first circuit is further used for outputting a voltage adjustment signal to the current mirror. The second circuit is used for outputting an adjustment signal for adjusting a resistance value of the adjustable resistance array c |
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