公开(公告)号：EP3044796B1

公开(公告)日：2017-11-01

申请号：EP14776934.3

申请日：2014-09-09

Applicant: Microchip Technology Incorporated

Inventor： MEACHAM, Daniel, R. ,  PANIGADA, Andrea ,  SHIH, David

IPC: G11C27/02 ,  H03M1/06 ,  H03M1/10 ,  H03M1/12 ,  H03M1/16

CPC classification number: H03M1/08 ,  G11C27/02 ,  G11C27/024 ,  H03M1/066 ,  H03M1/1033 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/122 ,  H03M1/1225 ,  H03M1/167 ,  H03M1/36

公开(公告)号：EP3044796A1

公开(公告)日：2016-07-20

申请号：EP14776934.3

申请日：2014-09-09

Applicant: Microchip Technology Incorporated

Inventor： MEACHAM, Daniel, R. ,  PANIGADA, Andrea ,  SHIH, David

IPC: G11C27/02 ,  H03M1/12 ,  H03M1/06

CPC classification number: H03M1/08 ,  G11C27/02 ,  G11C27/024 ,  H03M1/066 ,  H03M1/1033 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/122 ,  H03M1/1225 ,  H03M1/167 ,  H03M1/36

Abstract: An analog input stage has m differential input channels, wherein m>l. The analog input stage is configured to select one of the m differential input channels and provide an output signal. The analog input stage has n identical selection units each having m differential channel inputs and one differential output, wherein n is at least 2111"1. Each selection unit is operable to be coupled to any of the differential input channels through respective differential multiplexer units, wherein the multiplexor units are driven to select one of the differential input channels and couple the selected differential channel input through a butterfly switch unit with the differential output of the selection unit. The differential output signals of the n selection units are combined whereby unwanted crosstalk from channels other than a selected channel are removed by cancellation.

Abstract translation: 模拟输入级具有m个差分输入通道，其中m> 1。 模拟输入级被配置为选择m个差分输入通道之一并提供输出信号。 模拟输入级具有n个相同的选择单元，每个具有m个差分通道输入和一个差分输出，其中n至少为2m-1。 每个选择单元可操作以通过相应的差分多路复用器单元耦合到任何差分输入通道，其中多路复用器单元被驱动以选择差分输入通道中的一个，并通过蝶形开关单元将所选择的差分通道输入与差分 输出选择单元。 组合n个选择单元的差分输出信号，从而通过取消消除了除了所选频道之外的信道的不希望的串扰。