| 摘要 |
A charge pump circuit is disclosed that includes a main charge pump, a replica charge pump, and an op-amp. The main charge pump includes up and down input terminals to receive UP and DN control signals, a control terminal to receive a calibration signal, and an output to generate a control voltage. The replica charge pump includes up and down input terminals to receive DN and UP control signals, a control terminal to receive the calibration signal, and an output to generate a replica voltage. The op-amp generates the calibration signal in response to the control voltage and the replica voltage. |
| 主权项 |
1. A charge pump circuit, comprising:
a main charge pump including a first input to receive a first control signal, a second input to receive a second control signal, a third input to receive a calibration signal, and an output to provide a control voltage; a replica charge pump including a first input to receive the second control signal, a second input to receive the first control signal, a third input to receive the calibration signal, and an output to provide a replica voltage; and an operational amplifier including a first input to receive the control voltage, a second input to receive the replica voltage, and an output to provide the calibration signal. |
