A 10-BIT 20-MS/S 3-V SUPPLY CMOS A/D CONVERTER

被引:22
作者
ITO, M [1 ]
MIKI, T [1 ]
HOSOTANI, S [1 ]
KUMAMOTO, T [1 ]
YAMASHITA, Y [1 ]
KIJIMA, M [1 ]
OKUDA, T [1 ]
OKADA, K [1 ]
机构
[1] MITSUBISHI ELECTR CORP,ULSI LAB,ITAMI,HYOGO 664,JAPAN
关键词
D O I
10.1109/4.340427
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 10 bit CMOS A/D converter with 3 V power supply has been developed for being integrated into system VLSI's. In this A/D converter, redundant binary encoders named ''twin encoders'' enhance tolerance to substrate noise, together with employing differential amplifiers in comparators. The bias circuit using a replica of the amplifier is developed for biasing differential comparators with 3 V power supply. Subranging architecture along with a multilevel tree decoding structure improves dynamic performance of the ADC at 3 V power supply. The A/D converter is fabricated in double-polysilicon, double-metal, 0.8 mu m CMOS technology. The experimental results show that the ADC operates at 20 MS/s and the twin encoders suppress the influence of substrate noise effectively. This ADC has a single power supply of 3 V, and dissipates 135 mW at 20 MS/s operation.
引用
收藏
页码:1531 / 1536
页数:6
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