公开(公告)号：US20120044008A1

公开(公告)日：2012-02-23

申请号：US12859456

申请日：2010-08-19

申请人： Chan-Hong CHERN ,  Fu-Lung HSUEH ,  Chih-Chang LIN ,  Yuwen SWEI ,  Ming-Chieh HUANG

发明人： Chan-Hong CHERN ,  Fu-Lung HSUEH ,  Chih-Chang LIN ,  Yuwen SWEI ,  Ming-Chieh HUANG

IPC分类号： H03L5/00

CPC分类号： H03K3/02 ,  H03K19/018521 ,  H03K19/018528

摘要： A level shifter includes an input node, an output node, a pull-up transistor, a pull-down transistor, and at least one diode-connected device coupled between the pull-up transistor and the pull-down transistor. The level shifter is arranged to be coupled to a high power supply voltage, to receive an input signal having a first voltage level at the input node, and to supply an output signal having a second voltage level at the output node. The high power supply voltage is higher than the first voltage level. The at least one diode-connected device allows the output signal to be pulled up to about a first diode voltage drop below the high power supply voltage and/or to be pulled down to about a second diode voltage drop above ground. The first diode voltage drop and the second diode voltage drop are from the at least one diode-connected device.

摘要翻译： 电平移位器包括输入节点，输出节点，上拉晶体管，下拉晶体管以及耦合在上拉晶体管和下拉晶体管之间的至少一个二极管连接器件。 电平移位器被布置为耦合到高电源电压，以在输入节点处接收具有第一电压电平的输入信号，并且在输出节点处提供具有第二电压电平的输出信号。 高电源电压高于第一电压电平。 所述至少一个二极管连接的装置允许输出信号被上拉到大约低于高电源电压的第一二极管电压降和/或被下拉到大约地面上的第二二极管电压降。 第一二极管电压降和第二二极管压降来自至少一个二极管连接的器件。

公开(公告)号：US20130082754A1

公开(公告)日：2013-04-04

申请号：US13252498

申请日：2011-10-04

申请人： Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Tao Wen CHUNG ,  Chih-Chang LIN ,  Fu-Lung HSUEH ,  Yuwen SWEI

发明人： Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Tao Wen CHUNG ,  Chih-Chang LIN ,  Fu-Lung HSUEH ,  Yuwen SWEI

IPC分类号： H03L7/08

CPC分类号： H03L7/102 ,  H03L7/099 ,  H03L2207/06

摘要： An inductor-capacitor phase locked loop (LCPLL) includes an inductor-capacitor voltage controlled oscillator (LCVCO) that provides an output frequency. A calibration circuit includes two comparators and provides a coarse tune signal to the LCVCO. The two comparators respectively compare the loop filter signal with a first reference voltage and a second reference voltage that is higher than the first reference voltage to supply a first and second comparator output, respectively. The calibration circuit is capable of adjusting the coarse tune signal continuously in voltage values and adjusts the coarse tune signal based on the two comparator outputs. A loop filter provides a loop filter signal to the calibration circuit and a fine tune signal to the LCVCO. A coarse tune frequency range is greater than a fine tune frequency range.

摘要翻译： 电感 - 电容器锁相环（LCPLL）包括提供输出频率的电感 - 电容压控振荡器（LCVCO）。 校准电路包括两个比较器，并向LCVCO提供粗调信号。 两个比较器分别将环路滤波器信号与第一参考电压和高于第一参考电压的第二参考电压进行比较，以分别提供第一和第二比较器输出。 校准电路能够在电压值中连续调整粗调信号，并根据两个比较器输出调整粗调信号。 环路滤波器向校准电路提供环路滤波器信号，并向LCVCO提供微调信号。 粗调频率范围大于微调频率范围。

公开(公告)号：US20120050930A1

公开(公告)日：2012-03-01

申请号：US12871343

申请日：2010-08-30

申请人： Chan-Hong CHERN ,  Fu-Lung HSUEH ,  Yuwen SWEI ,  Chih-Chang LIN

发明人： Chan-Hong CHERN ,  Fu-Lung HSUEH ,  Yuwen SWEI ,  Chih-Chang LIN

IPC分类号： H02H9/04 ,  H03L5/00

CPC分类号： H03K19/0941 ,  H03K3/356182 ,  H03K19/018514

摘要： A representative level-shifter comprises a dynamically biased current source circuit that receives a first voltage, a first and a second unidirectional current-conducting devices, a first and a second pull-down devices, and a pull-up device. The first and second unidirectional current-conducting devices are coupled to the dynamically biased current source circuit. A voltage output of the level-shifter is located at a first node that is located between the current-constant circuit and the second unidirectional current-conducting device. The first and second pull-down devices are coupled to the first and second unidirectional current-conducting devices, respectively. The pull-up device receives a second voltage and is coupled to the dynamically biased current source circuit and the first unidirectional current-conducting device. The pull-up device is configured to dynamically bias the dynamically biased current source circuit such that a voltage drop of the second unidirectional current-conducting device is output at the voltage output responsive to the pull-up device outputting the second voltage to the dynamically biased current source circuit, the first pull-down device being non-conducting and the second pull-down device being conducting.

摘要翻译： 代表性的电平转换器包括接收第一电压，第一和第二单向导流器件，第一和第二下拉器件以及上拉器件的动态偏置电流源电路。 第一和第二单向导流器件耦合到动态偏置电流源电路。 电平移位器的电压输出位于位于电流恒定电路和第二单向导流器件之间的第一节点处。 第一和第二下拉装置分别耦合到第一和第二单向导流装置。 上拉装置接收第二电压并耦合到动态偏置电流源电路和第一单向导流装置。 上拉装置被配置为动态地偏置动态偏置的电流源电路，使得第二单向导流装置的电压降在电压输出处被输出，响应于上拉装置将第二电压输出到动态偏置 电流源电路，第一下拉装置不导通，第二下拉装置导通。

公开(公告)号：US20160087817A1

公开(公告)日：2016-03-24

申请号：US14492237

申请日：2014-09-22

申请人： Ming-Chieh HUANG ,  Chan-Hong CHERN ,  Tao Wen CHUNG ,  Yuwen SWEI ,  Chih-Chang LIN ,  Tsung-Ching HUANG

发明人： Ming-Chieh HUANG ,  Chan-Hong CHERN ,  Tao Wen CHUNG ,  Yuwen SWEI ,  Chih-Chang LIN ,  Tsung-Ching HUANG

IPC分类号： H04L25/03 ,  H04L25/06 ,  H04L25/08

CPC分类号： H04L25/03057 ,  H04L25/06 ,  H04L25/08

摘要： A circuit includes a summation circuit for receiving an input data signal and a feedback signal including a previous data bit. The summation circuit is configured to output a conditioned input data signal to a clock and data recovery circuit. A first flip-flop is coupled to an output of the summation circuit and is configured to receive a first set of bits of the conditioned input data signal and a first clock signal having a frequency that is less than a frequency at which the input data signal is received by the first summation circuit. A second flip-flop is coupled to the output of the summation circuit and is configured to receive a second set of bits of the conditioned input data signal and a second clock signal having a frequency that is less than the frequency at which the input data signal is received by the first summation circuit.

摘要翻译： 电路包括用于接收输入数据信号和包括先前数据位的反馈信号的求和电路。 求和电路被配置为将调节的输入数据信号输出到时钟和数据恢复电路。 第一触发器耦合到求和电路的输出，并且被配置为接收经调节的输入数据信号的第一比特组和具有小于输入数据信号的频率的频率的第一时钟信号 由第一求和电路接收。 第二触发器耦合到求和电路的输出，并且被配置为接收经调节的输入数据信号的第二组比特和具有小于输入数据信号的频率的频率的第二时钟信号 由第一求和电路接收。

公开(公告)号：US20140037035A1

公开(公告)日：2014-02-06

申请号：US13564758

申请日：2012-08-02

申请人： Tao Wen CHUNG ,  Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Chih-Chang LIN ,  Yuwen SWEI

发明人： Tao Wen CHUNG ,  Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Chih-Chang LIN ,  Yuwen SWEI

IPC分类号： H03D3/24

CPC分类号： H03K5/135 ,  H03H11/20 ,  H03K2005/00052 ,  H04L7/0029

摘要： A phase interpolator for a CDR circuit produces an output clock having level transitions between the level transitions on two input clocks. The input clocks drive cross-coupled differential amplifiers with an output that can be varied in phase by variable current throttling or steering, according to an input control value. The differential amplifiers produce an output signal with a transition spanning a time between the start of a transition on the leading input clock up to the end of the transition on the lagging input clock. The output clock is linear so long as the transitions on the two input clocks overlap. Active integrators each having an amplifier with a series resistance and capacitive feedback path are coupled to each input to the cross-coupled differential amplifiers, which enhances overlap of the input clock rise times and improves the linearity of the interpolated output signal.

摘要翻译： 用于CDR电路的相位插值器产生具有在两个输入时钟上的电平转换之间的电平转换的输出时钟。 输入时钟驱动交叉耦合差分放大器，输出可根据输入控制值通过可变电流节流或转向相位变化。 差分放大器产生一个输出信号，该输出信号跨越在引导输入时钟之间的转换开始到延迟输入时钟转换结束之间的时间。 输出时钟是线性的，只要两个输入时钟的转换重叠即可。 每个具有串联电阻和电容反馈路径的放大器的积分器耦合到交叉耦合差分放大器的每个输入，这增强了输入时钟上升时间的重叠，并提高了内插输出信号的线性度。

公开(公告)号：US20120032731A1

公开(公告)日：2012-02-09

申请号：US12849503

申请日：2010-08-03

申请人： Ming-Chieh HUANG ,  Chan-Hong CHERN ,  Chih-Chang LIN ,  Tien-Chun YANG ,  Yuwen SWEI

发明人： Ming-Chieh HUANG ,  Chan-Hong CHERN ,  Chih-Chang LIN ,  Tien-Chun YANG ,  Yuwen SWEI

IPC分类号： G05F3/02 ,  H01L25/00

CPC分类号： H02M3/07

摘要： An integrated circuit includes a first PMOS transistor, where its drain is arranged to be coupled to a voltage output, and its source is coupled to the drain of a second PMOS transistor. The source of the second PMOS transistor is arranged to be coupled to a high power supply voltage. The source and drain of a MOS capacitor are coupled to the source of the first PMOS transistor. The drain of an NMOS transistor is coupled to the drain of the first PMOS transistor. The integrated circuit is configured to receive a voltage input to generate the voltage output having a maximum voltage higher than the voltage input. The gate oxide layer thickness of the MOS capacitor is less than that of the first PMOS transistor.

摘要翻译： 集成电路包括第一PMOS晶体管，其中其漏极被布置成耦合到电压输出，并且其源极耦合到第二PMOS晶体管的漏极。 第二PMOS晶体管的源极被布置成耦合到高电源电压。 MOS电容器的源极和漏极耦合到第一PMOS晶体管的源极。 NMOS晶体管的漏极耦合到第一PMOS晶体管的漏极。 集成电路被配置为接收电压输入以产生具有高于电压输入的最大电压的电压输出。 MOS电容器的栅氧化层厚度小于第一PMOS晶体管的栅极氧化层厚度。

公开(公告)号：US20140015611A1

公开(公告)日：2014-01-16

申请号：US13547101

申请日：2012-07-12

申请人： Tao Wen CHUNG ,  Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Chih-Chang LIN ,  Yuwen SWEI

发明人： Tao Wen CHUNG ,  Chan-Hong CHERN ,  Ming-Chieh HUANG ,  Chih-Chang LIN ,  Yuwen SWEI

IPC分类号： H03F3/04

CPC分类号： G01R31/2621

摘要： A circuit has a first circuit module including a first resistor and first and second transistors coupled in parallel with the first resistor. The first resistor and the first and second transistors are coupled together at a first node. An equivalent resistance across the first circuit module increases as a voltage of the first node is increased from a first voltage to a second voltage, and the equivalent resistance across the first circuit module decreases as the voltage of the first node is increased from the second voltage to a third voltage.

摘要翻译： 电路具有包括第一电阻器和与第一电阻器并联耦合的第一和第二晶体管的第一电路模块。 第一电阻器和第一和第二晶体管在第一节点耦合在一起。 当第一节点的电压从第一电压增加到第二电压时，跨第一电路模块的等效电阻增加，并且第一电路模块上的等效电阻随着第一节点的电压从第二电压增加而减小 到第三电压。

公开(公告)号：US20130127433A1

公开(公告)日：2013-05-23

申请号：US13744037

申请日：2013-01-17

申请人： Chan-Hong CHERN ,  Tzu Ching CHANG ,  Min-Shueh YUAN ,  Yuwen SWEI ,  Chih-Chang LIN ,  Chiang PU ,  Ming-Chieh HUANG ,  Kuoyuan HSU

发明人： Chan-Hong CHERN ,  Tzu Ching CHANG ,  Min-Shueh YUAN ,  Yuwen SWEI ,  Chih-Chang LIN ,  Chiang PU ,  Ming-Chieh HUANG ,  Kuoyuan HSU

IPC分类号： G05F1/44

CPC分类号： H02M3/158 ,  G05F1/44 ,  G05F1/56

摘要： A method of operating a voltage regulator circuit includes generating a control signal by an amplifier of the voltage regulator circuit. The control signal is generated based on a reference signal at an inverting input of the amplifier and a feedback signal at a non-inverting input of the amplifier. A driving current flowing toward an output node of the voltage regulator circuit is generated by a driver responsive to the control signal, and the driver is coupled between a first power node and the output node. The feedback signal is generated responsive to a voltage level at the output node. A transistor, coupled between the output node and a second power node, is caused to operate in saturation mode during a period while the voltage regulator circuit is operating.

摘要翻译： 一种操作电压调节器电路的方法包括由稳压器电路的放大器产生控制信号。 控制信号基于放大器的反相输入处的参考信号和放大器的非反相输入端的反馈信号而产生。 通过响应于控制信号的驱动器产生朝向电压调节器电路的输出节点流动的驱动电流，并且驱动器耦合在第一功率节点和输出节点之间。 响应于输出节点处的电压电平产生反馈信号。 耦合在输出节点和第二功率节点之间的晶体管在电压调节器电路工作期间的一段时间内使其工作在饱和模式。

公开(公告)号：US20130099767A1

公开(公告)日：2013-04-25

申请号：US13278742

申请日：2011-10-21

申请人： Ming-Chieh HUANG ,  Tao Wen CHUNG ,  Chan-Hong CHERN ,  Chih-Chang LIN ,  Yuwen SWEI ,  Chiang PU

发明人： Ming-Chieh HUANG ,  Tao Wen CHUNG ,  Chan-Hong CHERN ,  Chih-Chang LIN ,  Yuwen SWEI ,  Chiang PU

IPC分类号： G05F3/02

CPC分类号： H03H11/44 ,  H01S5/0427 ,  H04B10/504

摘要： A driver includes a first driver stage having at least one input node and at least one first output node. The first driver stage includes a T-coil structure that is disposed adjacent to the at least one first output node. The T-coil structure includes a first set of inductors each being operable to provide a first inductance. A second set of inductors are electrically coupled with the first set of inductors in a parallel fashion. The second set of inductors each are operable to provide a second inductance. A second driver stage is electrically coupled with the first driver stage.

摘要翻译： 驱动器包括具有至少一个输入节点和至少一个第一输出节点的第一驱动器级。 第一驱动级包括邻近于至少一个第一输出节点设置的T型线圈结构。 T型线圈结构包括第一组电感器，每个电感器可操作以提供第一电感。 第二组电感器以并行方式与第一组电感器电耦合。 第二组电感器可操作以提供第二电感。 第二驱动级与第一驱动器级电耦合。

公开(公告)号：US20130121396A1

公开(公告)日：2013-05-16

申请号：US13293513

申请日：2011-11-10

申请人： Ming-Chieh HUANG ,  Jing Jing CHEN ,  Chan-Hong CHERN ,  Tao Wen CHUNG ,  Chih-Chang LIN ,  Yuwen SWEI

发明人： Ming-Chieh HUANG ,  Jing Jing CHEN ,  Chan-Hong CHERN ,  Tao Wen CHUNG ,  Chih-Chang LIN ,  Yuwen SWEI

IPC分类号： H04L27/01

CPC分类号： H04L25/03057 ,  H04L2025/0349 ,  H04L2025/03566 ,  H04L2025/03617 ,  H04L2025/03687

摘要： A Decision Feedback Equalizer (DFE) with programmable taps includes a summer configured to receive a DFE input signal. Delay elements are coupled to the summer. The delay elements are connected in series. Each delay element provides a respective delayed signal of an input signal to the delay element. A weight generator is configured to provide tap weights. The DFE is configured to multiply each tap weight to the respective delayed signal from the respective delay element to provide tap outputs. Each tap output is selectively enabled to be added to the summer or disabled based on a first comparison of a first threshold value and each impulse response or each tap weight corresponding to the respective tap output, where the impulse response is the DFE input signal in response to a pulse signal transmitted through a channel.

摘要翻译： 具有可编程抽头的判决反馈均衡器（DFE）包括一个加法器，用于接收DFE输入信号。 延迟元素与夏天相结合。 延迟元件串联连接。 每个延迟元件向延迟元件提供输入信号的相应延迟信号。 重量发生器被配置成提供抽头重量。 DFE被配置为将每个抽头权重乘以来自相应延迟元件的相应延迟信号以提供抽头输出。 基于第一阈值和对应于各抽头输出的每个脉冲响应或每个抽头权重的第一比较，每个抽头输出被选择性地被加到加法器或禁止中，其中脉冲响应是响应中的DFE输入信号 通过通道传输的脉冲信号。