A compact current-mode instrumentation amplifier for general-purpose sensor interfaces

被引：5
作者：
Del Cesta, Simone [1 ,3 ]
Ria, Andrea [1 ,3 ]
Piotto, Massimo [1 ,2 ]
Simmarano, Roberto [3 ]
Bruschi, Paolo [1 ,2 ]
机构：
[1] Univ Pisa, Dipartimento Ingn Informaz, Via Caruso 16, I-56122 Pisa, Italy
[2] CNR IEIIT, Via Caruso 16, I-56122 Pisa, Italy
[3] Sensichips Srl, Via Valli 46, I-04011 Latina, Italy
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2018年 / 92卷
关键词：
Instrumentation amplifier; Wide input range; Vector signal analysis; CMOS; Sensor interfacing; OP-AMP; RANGE; RAIL;
D O I：
10.1016/j.aeue.2018.05.013
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The proposed amplifier architecture follows a consolidated topology based on second-generation current conveyors (CCIIs), optimized for fully-differential operation. The architecture uses gain-boosting to improve the offset and noise characteristics of a recently proposed design. Wide input and output ranges and high accuracy are obtained by designing the CCIIs according to an original two-stage architecture with local voltage feedback. Embedding of chopper switch matrices into the amplifier enables vector analysis of the input signal, expanding the application field. The main strengths of the proposed amplifier are compactness and versatility. Measurements performed on a prototype designed with a 0.18 mu m CMOS process are described.
引用
收藏
页码：8 / 14
页数：7
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