A 10b 50MS/s Opamp-Sharing Pipeline A/D With Current-Reuse OTAs

被引:3
|
作者
Chandrashekar, K. [1 ]
Bakkaloglu, B. [1 ]
机构
[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA
关键词
ADC;
D O I
10.1109/CICC.2009.5280855
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
A 10b opamp-sharing pipeline A/D using current-reuse OTAs is presented. The current-reuse OTA, with two NMOS differential inputs operating in opposite phases, facilitates opamp-sharing between consecutive stages, minimizing power consumption. Constant transistor biasing ensures no loss of settling time from power-on delays. The AID is fabricated in a 0.18 mu m CMOS process and occupies active area of 0.7mm(2). At 50MS/s, maximum SNDR of 58dB (ENOB=93b) is obtained with 9.2mW analog power consumption on a 1.8V supply.
引用
收藏
页码:263 / 266
页数:4
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