A 10-bit 80-MS/s opamp-sharing pipelined ADC with a switch-embedded dual-input MDAC

作者：Yin Rui; Liao Youchun; Zhang Wei; Tang Zhangwen^*

来源：Chinese Journal of Semiconductors, 2011, 32(2): 025006:1-025006:6.

DOI：10.1088/1674-4926/32/2/025006

• Core area
• Cross-talk problem
• Dual-input MDAC
• Full nyquist
• Low Power
• Opamp-sharing
• Pipelined ADCs
• Power supply

A 10-bit 80-MS/s opamp-sharing pipelined ADC is implemented in a 0.18-μm CMOS. An opamp-sharing MDAC with a switch-embedded dual-input opamp is proposed to eliminate the non-resetting and successive-stage crosstalk problems observed in the conventional opamp-sharing technique. The ADC achieves a peak SNDR of 60.1 dB (ENOB = 9.69 bits) and a peak SFDR of 76 dB, while maintaining more than 9.6 ENOB for the full Nyquist input bandwidth. The core area of the ADC is 1.1 mm2 and the chip consumes 28 mW with a 1.8 V power supply.

• 出版日期2011
• 单位复旦大学