← 返回 JSSC 论文列表JSSC 2008第9期Data Converters0.18μm
Dynamic Element Matching to Prevent Nonlinear Distortion From Pulse-Shape Mismat
动态元件匹配技术消除高分辨率DAC中的非线性失真
0.18μm CMOS, 14-bit, 100MHz, SFDR 83-84dB
动态元件匹配非线性失真高分辨率DAC奈奎斯特速率CMOS
▸动态元件匹配(DEM)消除脉冲形状、时序和幅度误差
▸提出满足条件的分段DEM编码器
▸编码器复杂度不随DAC分辨率指数增长
Abstract
This paper shows analytically and experimentally
that properly-designed dynamic element matching (DEM) elim-
inates pulse shape, timing, and amplitude errors arising from
component mismatches as sources of nonlinear distortion in
high-resolution DACs. A set of sufficient conditions on the DEM
encoder that ensure this effect, and a specific segmented DEM en-
coder that satisfies the sufficient conditions are presented. Unlike
most previously published DEM encoders, the new DEM en-
coder’s complexity