A digital-calibration technique for redundant radix-4 pipelined analog-to-digital converters

被引:5
|
作者
Furuta, Masanori [1 ]
Kawahito, Shoji [1 ]
Miyazaki, Daisuke [1 ]
机构
[1] Shizuoka Univ, Res Inst Elect, Hamamatsu, Shizuoka 4328011, Japan
关键词
capacitor mismatch; digital calibration; error measurement; pipelined analog-to-digital converter (ADC);
D O I
10.1109/TIM.2007.904569
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 describes a digital-calibration technique, which corrects gain errors due to capacitor mismatch and offset errors due to charge injection in redundant radix- 4 pipelined analog-to-digital converters (ADCs). The error coefficients are directly measured using an integral nonlinearity (INL) plot. The proposed method simplifies the error-measurement process and removes on-chip measurement circuits in the ADC. Computer simulations show that the maximum INL of 15 LSB in an uncalibrated 15-bit ADC is reduced to less than 0.3 LSB using the digital calibration.
引用
收藏
页码:2301 / 2311
页数:11
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