Voltage buffer and chip
The invention discloses a voltage buffer and a chip. The voltage buffer comprises a first amplifier, an output circuit and a voltage-controlled current source, the first input end of the first amplifier receives reference voltage; the output circuit is arranged between the working voltage and the gr...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a voltage buffer and a chip. The voltage buffer comprises a first amplifier, an output circuit and a voltage-controlled current source, the first input end of the first amplifier receives reference voltage; the output circuit is arranged between the working voltage and the ground voltage, the output end of the output circuit is connected with the second input end of the first amplifier to form a first feedback loop, and the output end of the first amplifier is connected with the output circuit to enable the output circuit to generate output voltage at the output end; the voltage-controlled current source is connected with the output end of the output circuit and a first node to form a second feedback loop, the first node is a connection point between the output end of the first amplifier and the output circuit, the voltage-controlled current source generates feedback current based on the output voltage, and the feedback current changes along with the change of the output voltage; the o |
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