1.1 V low-power ΣΔ modulator for 14-bit, 16 KHz A/D conversion using a new low-voltage class-AB op-amp

被引：4

作者：

Muñoz, F

Vegaleal, AP

Carvajal, RG

Torralba, A

Tombs, J

Ramírez-Angulo, J

机构：

[1] Univ Seville, Escuela Super Ingn, Dept Ingn Elect, Seville 41092, Spain

[2] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2005年 / 43卷 / 01期

关键词：

D O I：

10.1007/s10470-005-6568-9

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents the implementation of a second order Sigma Delta modulator for a 1.1 V supply voltage. A new class-AB CMOS operational amplifier has been designed in order to achieve high-resolution under very-low-voltage operation. The modulator has been implemented using a 0.35 mu m CMOS technology with 0.65 V transistor threshold voltage. Experimental results show 14 bits of resolution over 16 kHz nyquist rate with an oversampling ratio of 160.

引用

页码：31 / 38

页数：8