Constant-gm Low-Power Rail-to-Rail Operational Amplifier

被引：0

作者：

Zhang, Yi ^{[1
]}

Meng, Qiao ^{[1
]}

Wang, Zhigong ^{[1
]}

Chen, Shuoxi ^{[2
]}

机构：

[1] Southeast Univ, Inst RF & OE ICs, Nanjing, Peoples R China

[2] Delft Univ Technol, Elect Instrument Lab, Delft, Netherlands

来源：

2009 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP 2009) | 2009年

关键词：

Rail-to-rail; constant-g(m); low power; CMOS analog integrated circuits; INPUT STAGE; CMOS; CIRCUIT;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A low-power rail-to-rail operational amplifier (Op-amp) was realized in SMIC 0.18 mu m CMOS process. Under a 1.8V supply voltage, a constant transconductance (within 5.4% of maximum variation) is ensured for the whole common-mode input range. The class AB output stage also has a full voltage swing. The circuit provides a gain bandwidth of 17.3-MHz and a DC gain of 99.6 dB. The input transistors operate in weak inversion, which have big g(m)/I-d value, so the power consumption is reduced to only 89.02 mu W (C-load=5pf).

引用

页码：964 / +

页数：2

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