公开(公告)号：CN106685420A

公开(公告)日：2017-05-17

申请号：CN201611161621.3

申请日：2016-12-15

Applicant: 西安邮电大学

Inventor： 佟星元

IPC: H03M1/00 ,  H03M1/12 ,  H03M1/40

CPC classification number: H03M1/002 ,  H03M1/1205 ,  H03M1/1245 ,  H03M1/403 ,  H03M2201/8164

Abstract: 本发明公开了一种用于逐次逼近ADC电容阵列的低功耗高线性度切换方法，属逐次逼近ADC的超低功耗设计技术领域。该方法属于基于上极板采样的三基准(Vref、Vcm＝Vref/2及Gnd＝0)切换方法，因此，所对应的电容阵列规模相比传统结构能够减小75％。该方法采用了开关控制时序初始化、电容向下切换与向上切换合理结合的逻辑切换方式，在不考虑寄生电容的情况下，电容阵列转换能耗仅为传统结构的1.2％，在上极板寄生电容为单位电容10％、下极板寄生电容为单位电容15％的条件下，电容阵列转换能耗仅为传统结构的1.3％。此外，相比已有的切换方案，采用该方法实现的SAR ADC内部D/A转换结构在线性度方面有明显的改善。

公开(公告)号：KR1020130067144A

公开(公告)日：2013-06-21

申请号：KR1020110134012

申请日：2011-12-13

Applicant: 한국과학기술원

Inventor： 류승탁 ,  이창교

IPC: H04N5/3745

CPC classification number: H03F3/005 ,  H03F3/45 ,  H03F2203/45582 ,  H03M2201/8164

Abstract: PURPOSE: A reference voltage driver circuit is provided to drive a reference voltage of wide range by connecting a replica driving stage to a closed loop driving circuit through a switch capacitor level shifter. CONSTITUTION: Differential amplifiers(11,14) of a closed loop circuit amplify difference between a driving voltage of a driving voltage generator and a feedback voltage. Level shifters(12,15) of the closed loop circuit perform level shift of a constant voltage as to an output of the differential amplifier. Driver units(13,16) of the closed loop circuit output a reference voltage in response to an output of the level shifter. An open-loop circuit(20) includes a replica circuit of the driver unit.

Abstract translation: 目的：提供参考电压驱动电路，通过开关电容电平转换器将复制驱动级连接到闭环驱动电路来驱动宽范围的参考电压。 构成：闭环电路的差分放大器（11,14）放大驱动电压发生器的驱动电压和反馈电压之间的差。 闭环电路的电平移位器（12,15）对差分放大器的输出执行恒定电压的电平移位。 闭环电路的驱动器单元（13,16）响应于电平转换器的输出而输出参考电压。 开环电路（20）包括驱动器单元的复制电路。

公开(公告)号：KR1020100025645A

公开(公告)日：2010-03-10

申请号：KR1020080084269

申请日：2008-08-28

Applicant: 전자부품연구원

Inventor： 박원기 ,  민경원 ,  이성철

IPC: H03M1/06

CPC classification number: H03M1/0607 ,  H03M1/1023 ,  H03M2201/6142 ,  H03M2201/8164

Abstract: PURPOSE: A capacitance error compensation circuit and a switched capacitor integrator are provided to prevent the performance deterioration of the circuit for matching a capacitor by reducing an amount of capacitance variation. CONSTITUTION: A capacitance error compensation circuit includes a first capacitor(C1), a second capacitor(C2), and a third capacitor(C3). The second capacitor is selectively connected in series to the first capacitor and includes a smaller capacitance than that of the first capacitor. The third capacitor is selectively connected in series to the first capacitor and has a larger capacitance than that of the first capacitor. A first switch(sw1) selectively connects the first capacitor with the second capacitor. A second switch(sw2) selectively connects the first capacitor with the third capacitor.

Abstract translation: 目的：提供电容误差补偿电路和开关电容积分器，以通过减少电容量变化量来防止用于匹配电容器的电路的性能劣化。 构成：电容误差补偿电路包括第一电容器（C1），第二电容器（C2）和第三电容器（C3）。 第二电容器与第一电容器串联选择性地连接，并且包括比第一电容器小的电容。 第三电容器与第一电容器串联选择性地连接，并且具有比第一电容器更大的电容。 第一开关（sw1）选择性地将第一电容器与第二电容器连接。 第二开关（sw2）选择性地将第一电容器与第三电容器连接。