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
收藏
页码：31 / 38
页数：8
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