Voltage Controlled Resistor for mismatch adjustment in analog CMOS circuits

被引：0

作者：

Yu, BY ^{[1
]}

Scott, T ^{[1
]}

Gupta, S ^{[1
]}

Sridharan, S ^{[1
]}

Black, W ^{[1
]}

机构：

[1] Iowa State Univ, Dept Elect & Comp Engn, Analog & Mixed Signal Design Ctr, Ames, IA 50011 USA

来源：

ISCAS '98 - PROCEEDINGS OF THE 1998 INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-6 | 1998年

关键词：

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

A Voltage Controlled Resistor (VCR) scheme is demonstrated for use in precision analog applications on standard CMOS processes. This technique utilizes a metal or poly overlay across an n-well resistor field region to slightly modulate the well resistivity. This scheme is quite useful in data converters employing dynamic element matching and amplifiers employing offset cancellation as the maximum adjustable change in resistance is only slightly larger than typical component mismatches. This small voltage variability allows for simple but very precise calibration compared to traditional methods. A macro-model of the VCR is proposed based on device simulation results from ATLAS(TM). Simulation of this device in a dynamic element matching circuit is also demonstrated.

引用

页码：563 / 566

页数：4

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