Low power 8-b CMOS current steering folding-interpolating A/D converter

被引：2

作者：

Cuong, Do Danh ^{[1
]}

Cui, Zhi-Yuan ^{[1
]}

Kim, Nam-Soo ^{[1
]}

Lee, Kie-Yong ^{[1
]}

Choi, Ho-Yong ^{[1
]}

机构：

[1] Chungbuk Natl Univ, Cheongju, South Korea

来源：

IEICE TRANSACTIONS ON ELECTRONICS | 2008年 / E91C卷 / 01期

关键词：

A/D converter; current steering folder; interpolation; CMOS process;

D O I：

10.1093/ietele/e91-c.1.81

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 CMOS A/D converter based on the folding and interpolating technique. A current steering folder composed of differential pairs allows low power operation and an interpolation is used for high speed with low supply voltage. In a folding circuit, only twenty-three MOSFETs are required to have eight reference voltages of an 8-b A/D converter. The interpolation is implemented with a current division technique to generate 32 folding signals. This approach requires much less area and power consumption than other conventional flash A/D converter. The simulation in a 0.35 mu m CMOS process achieves 8-b resolution at 250 Msample/s with power consumption 70 mW at 3.3 V power supply. The preliminary experiment indicates the current steering folder and coarse bits operate as expected.

引用

页码：81 / 86

页数：6