Low Current Constant-gm Technique for Rail-to-Rail Operational Amplifiers

被引：0
|
作者：
Veselu, Adrian Constantin [1 ,2 ]
Stanescu, Cornel [1 ]
Brezeanu, Gheorghe [2 ]
机构：
[1] ON Semicond Romania, Bucharest, Romania
[2] Univ Politehn Bucuresti, Elect Telecommun & Informat Technol, Bucharest, Romania
来源：
CAS 2020 PROCEEDINGS: 2020 INTERNATIONAL SEMICONDUCTOR CONFERENCE | 2020年
关键词：
constant-gm; operational amplifiers; choppers;
D O I：
暂无
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：
This paper presents a new constant transconductance (gm) technique for rail-to-rail CMOS operational amplifier input stages. The proposed technique can provide a constant transconductance value over the whole common-mode range with low current consumption. Also, the technique ensures no additional current at the output of the rail-to-rail input stage. To prove its advantages, the technique was integrated in a chopper stabilized operational amplifier. The simulation results show a transconductance variation of only 4% and a constant unity gain bandwidth.
引用
收藏
页码：253 / 256
页数：4
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