公开(公告)号：WO2003007479A1

公开(公告)日：2003-01-23

申请号：PCT/EP2002/006487

申请日：2002-06-13

Applicant: STMICROELECTRONICS S.R.L. ,  CONFALONIERI, Pierangelo ,  ZAMPROGNO, Marco ,  NAGARI, Angelo

Inventor： CONFALONIERI, Pierangelo ,  ZAMPROGNO, Marco ,  NAGARI, Angelo

IPC: H03M1/06

CPC classification number: H03M1/0682 ,  H03M1/468 ,  H03M1/804

Abstract: The capacitors of a first array (10A') of sampling capacitors weighted in binary code are, connected between a first common circuit node (NB+) and an input terminal to be charged to the voltage (Vin) with respect to ground (Gnd) of a signal to be converted, and in accordance with BAR technique are then selectively connected with two differential reference terminals (Vrefp, Vrefm) .At the same time the capacitors of a second array (10B') equal to the first and all connected to a second node (NB-) are selectively connected to ground (Gnd) and the lower differential voltage terminal (Vrefm). The two nodes are connected to the respective inputs of a comparator (23"). A logic unit (17") controls the connections of the capacitors of the two arrays in accordance with a predetermined timing program and as a function of the output of the comparator (23"). Though the converter has a single-ended input, it behaves like a converter 20 with a differential input and therefore has an excellent immunity with respect to noise. Furthermore, it does not need either additional capacitors or a particularly sensitive comparator, so that it is characterized by low consumption and high speed and occupies a very small area of the integrated circuit of which it forms part.

Abstract translation: 以二进制码加权的采样电容器的第一阵列（10A'）的电容器连接在第一公共电路节点（NB +）和要被充电到相对于地的电压（Vin）的输入端子（Gnd）之间 然后根据BAR技术选择性地连接两个差分参考端（Vrefp，Vrefm），同时将第一阵列（10B'）的电容等于第一阵列（10B'），并将其全部连接到 第二节点（NB-）选择性地连接到地（Gnd）和下差分电压端（Vrefm）。 两个节点连接到比较器（23“）的相应输入端，逻辑单元（17”）根据预定的定时程序控制两个阵列的电容器的连接，并根据 比较器（23“）虽然转换器具有单端输入，但它的作用就像具有差分输入的转换器20，因此在噪声方面具有优异的抗扰度，而且不需要额外的电容器或特别敏感的 比较器，其特征在于低功耗和高速度，占据其形成部分的集成电路的非常小的面积。

公开(公告)号：EP1405419B1

公开(公告)日：2005-08-31

申请号：EP02743185.7

申请日：2002-06-13

Applicant: STMicroelectronics S.r.l.

Inventor： CONFALONIERI, Pierangelo ,  ZAMPROGNO, Marco ,  NAGARI, Angelo

IPC: H03M1/06

CPC classification number: H03M1/0682 ,  H03M1/468 ,  H03M1/804

Abstract: The capacitors of a first array (10A') of sampling capacitors weighted in binary code are, connected between a first common circuit node (NB+) and an input terminal to be charged to the voltage (Vin) with respect to ground (Gnd) of a signal to be converted, and in accordance with BAR technique are then selectively connected with two differential reference terminals (Vrefp, Vrefm) .At the same time the capacitors of a second array (10B') equal to the first and all connected to a second node (NB-) are selectively connected to ground (Gnd) and the lower differential voltage terminal (Vrefm). The two nodes are connected to the respective inputs of a comparator (23"). A logic unit (17") controls the connections of the capacitors of the two arrays in accordance with a predetermined timing program and as a function of the output of the comparator (23"). Though the converter has a single-ended input, it behaves like a converter 20 with a differential input and therefore has an excellent immunity with respect to noise. Furthermore, it does not need either additional capacitors or a particularly sensitive comparator, so that it is characterized by low consumption and high speed and occupies a very small area of the integrated circuit of which it forms part.

公开(公告)号：EP1405419A1

公开(公告)日：2004-04-07

申请号：EP02743185.7

申请日：2002-06-13

Applicant: STMicroelectronics S.r.l.

Inventor： CONFALONIERI, Pierangelo ,  ZAMPROGNO, Marco ,  NAGARI, Angelo

IPC: H03M1/06

CPC classification number: H03M1/0682 ,  H03M1/468 ,  H03M1/804

Abstract: The capacitors of a first array (10A') of sampling capacitors weighted in binary code are, connected between a first common circuit node (NB+) and an input terminal to be charged to the voltage (Vin) with respect to ground (Gnd) of a signal to be converted, and in accordance with BAR technique are then selectively connected with two differential reference terminals (Vrefp, Vrefm) .At the same time the capacitors of a second array (10B') equal to the first and all connected to a second node (NB-) are selectively connected to ground (Gnd) and the lower differential voltage terminal (Vrefm). The two nodes are connected to the respective inputs of a comparator (23'). A logic unit (17') controls the connections of the capacitors of the two arrays in accordance with a predetermined timing program and as a function of the output of the comparator (23'). Though the converter has a single-ended input, it behaves like a converter 20 with a differential input and therefore has an excellent immunity with respect to noise. Furthermore, it does not need either additional capacitors or a particularly sensitive comparator, so that it is characterized by low consumption and high speed and occupies a very small area of the integrated circuit of which it forms part.