公开(公告)号：US08643521B1

公开(公告)日：2014-02-04

申请号：US13688158

申请日：2012-11-28

Applicant: United Microelectronics Corporation

Inventor： Hsueh-Chen Cheng ,  Wen-Hong Hsu ,  Po-Hua Chen ,  Yu-Yee Liow

IPC: H03M1/00

CPC classification number: H03M1/0818 ,  H03M1/742

Abstract: A DAC has at least one bit current-steering circuit. In the DAC, the current-steering circuit has a current source circuit, a switch, a feedback circuit, and an amplifier circuit. The current source circuit is disposed for outputting a bias current to the switch and coupled to the amplifier circuit. The switch has a first input/output terminal coupled to output an analog signal, a control terminal coupled to the feedback circuit, and a second input/output terminal for receiving the bias current, so that the first switch determines whether the first and the second input/output terminals are conducted according to a status of the control terminal.

Abstract translation: DAC具有至少一个位电流转向电路。 在DAC中，电流导向电路具有电流源电路，开关，反馈电路和放大器电路。 电流源电路被设置用于向开关输出偏置电流并耦合到放大器电路。 开关具有耦合以输出模拟信号的第一输入/输出端子，耦合到反馈电路的控制端子和用于接收偏置电流的第二输入/输出端子，使得第一开关确定第一和第二 输入/输出端子根据控制端子的状态进行。

公开(公告)号：US09571079B2

公开(公告)日：2017-02-14

申请号：US14938827

申请日：2015-11-11

Applicant: UNITED MICROELECTRONICS CORPORATION

Inventor： Yu-Yee Liow ,  Ya-Nan Mou ,  Yuan-Hui Chen ,  Shih-Chin Lin ,  Po-Hua Chen ,  Wen-Hong Hsu

IPC: H03H11/26 ,  H03K5/13 ,  G01R19/00 ,  H03K5/00

CPC classification number: H03K5/133 ,  G01R19/0084 ,  H03K2005/00019

Abstract: An integrated circuit includes a signal generating unit, a signal monitoring unit and a processing unit. The signal generating unit is configured to generate a control signal. The signal monitoring unit is configured to receive the control signal and accordingly output a monitor signal. The processing unit is configured to receive the monitor signal. The control signal is adjusted until the monitor signal is located within a preset range. A signal monitoring method used with the integrated circuit and a signal monitoring method used with a plurality of transistors are also provided.

Abstract translation: 集成电路包括信号发生单元，信号监视单元和处理单元。 信号生成单元被配置为产生控制信号。 信号监视单元被配置为接收控制信号并相应地输出监视信号。 处理单元被配置为接收监视信号。 控制信号被调整直到监视信号位于预设范围内。 还提供了与集成电路一起使用的信号监视方法以及与多个晶体管一起使用的信号监视方法。