公开(公告)号：US20080198054A1

公开(公告)日：2008-08-21

申请号：US12031736

申请日：2008-02-15

Applicant: Wei-Cheng Lin ,  Kai-Chieh Yang ,  Keiichi Sano ,  Fang-Hsing Wang ,  Ting-Yu Chang

Inventor： Wei-Cheng Lin ,  Kai-Chieh Yang ,  Keiichi Sano ,  Fang-Hsing Wang ,  Ting-Yu Chang

IPC: H03M1/66

CPC classification number: H03M1/804

Abstract: A digital to analog converter is provided comprising a charge sharing circuit, a discharging circuit and a voltage boosting circuit. The charge sharing circuit sequentially receives first to (N-1)th bits of serial digital signals. The charge sharing circuit shares and stores charges between a first capacitor and a second capacitor according to a charging voltage, a ground voltage, a first clock signal and serial data signals. The discharging circuit discharges the charge sharing circuit according to a reset signal. After the voltage boosting circuit receive the (N-1)th digital signal, the charge boosting circuit whether to boost a first terminal and a second terminal of the second capacitor or not based on an Nth digital signal. After the voltage boosting circuit receives the Nth serial digital signal, the charge sharing circuit outputs an analog signal from the second terminal of the second capacitor.

Abstract translation: 提供了一种数模转换器，包括电荷共享电路，放电电路和升压电路。 电荷共享电路顺序地接收串行数字信号的第一到第（N-1）位。 电荷共享电路根据充电电压，接地电压，第一时钟信号和串行数据信号共享和存储第一电容器和第二电容器之间的电荷。 放电电路根据复位信号对电荷共享电路进行放电。 在升压电路接收到第（N-1）个数字信号之后，充电提升电路是否基于第N个数字信号升压第二电容器的第一端子和第二端子。 在升压电路接收到第N串行数字信号之后，电荷共享电路从第二电容器的第二端子输出模拟信号。

公开(公告)号：US07525467B2

公开(公告)日：2009-04-28

申请号：US12031736

申请日：2008-02-15

Applicant: Wei-Cheng Lin ,  Kai-Chieh Yang ,  Keiichi Sano ,  Fang-Hsing Wang ,  Ting-Yu Chang

Inventor： Wei-Cheng Lin ,  Kai-Chieh Yang ,  Keiichi Sano ,  Fang-Hsing Wang ,  Ting-Yu Chang

IPC: H03M1/66

CPC classification number: H03M1/804

Abstract: A digital to analog converter is provided comprising a charge sharing circuit, a discharging circuit and a voltage boosting circuit. The charge sharing circuit sequentially receives first to (N−1)th bits of serial digital signals. The charge sharing circuit shares and stores charges between a first capacitor and a second capacitor according to a charging voltage, a ground voltage, a first clock signal and serial data signals. The discharging circuit discharges the charge sharing circuit according to a reset signal. After the voltage boosting circuit receive the (N−1)th digital signal, the charge boosting circuit whether to boost a first terminal and a second terminal of the second capacitor or not based on an Nth digital signal. After the voltage boosting circuit receives the Nth serial digital signal, the charge sharing circuit outputs an analog signal from the second terminal of the second capacitor.

Abstract translation: 提供了一种数模转换器，包括电荷共享电路，放电电路和升压电路。 电荷共享电路顺序地接收串行数字信号的第一到第（N-1）位。 电荷共享电路根据充电电压，接地电压，第一时钟信号和串行数据信号共享和存储第一电容器和第二电容器之间的电荷。 放电电路根据复位信号对电荷共享电路进行放电。 在升压电路接收到第（N-1）个数字信号之后，充电提升电路是否基于第N个数字信号升压第二电容器的第一端子和第二端子。 在升压电路接收到第N串行数字信号之后，电荷共享电路从第二电容器的第二端子输出模拟信号。