← 返回 JSSC 论文列表JSSC 2013第12期Data Converters0.16 µm CMOS
A 63 µW 20 bit Incremental Zoom-ADC with 6 ppm INL and 1 µV Offset
一款用于电池供电传感器应用的20位增量型Zoom-ADC，具有6 ppm INL和1 µV偏移。
20位分辨率，6 ppm INL，1 µV偏移，40 ms转换时间，3.5 µA电流，1.8 V电源
增量型ADCZoom-ADC能量高效动态误差校正高分辨率
▸采用能量高效的Zoom-ADC架构
▸基于级联动态反相器的积分器设计
▸动态误差校正技术（自动归零、斩波和动态元件匹配）
Abstract
A 20-bit incremental ADC for battery-powered
sensor applications is presented. It is based on an energy-ef fi-
cient zoom ADC architecture, which employs a coarse 6-bit SAR
conversion followed by a fine 15-bit ΔΣ conversion. To further im-
prove its energy ef ficiency, the ADC employs integrators based on
cascoded dynamic inverters for extra gain and PVT tolerance. Dy-
namic error correction techniques such as auto-zeroing, chopping
and dynamic element matching are used to achieve both low offset
a