← 返回 JSSC 论文列表JSSC 2010第9期Other0.18μm 1-poly-6-metal CMOSDelta-Sigma ADC
An Integrated ISFETs Instrumentation System in Standard CMOS Technology
本文介绍了一种在标准CMOS工艺中集成的ISFETs仪器系统，采用全局负电流反馈技术计算CMOS ISFETs的平均阈值电压。
3.3V模拟和数字输入/输出块，1.8V核心数字逻辑，8位精度，80μW静态功耗
ISFETCMOSsigma-delta调制器电流反馈频率域
▸使用全局负电流反馈技术计算ISFETs的平均阈值电压
▸无需参考电压或电流设置sigma-delta调制器
▸在频率域内转换和处理内部信号
Abstract
zou , Fellow, IEEE
Abstract—This paper describes an integrated ISFETs instru-
mentation system in a 0.18
m 1-poly-6-metal CMOS process. The
chip is able to compute the average of CMOS ISFETs’ threshold
voltages by using an averaging array employing global negative
current feedback. In addition, neither reference voltage nor
current is required to set up the sigma-delta modulator because
the internal signal is converted and processed in the frequency
domain. The chip operates at 3.3 V for the an