A 10-bit 2.6-GS/s Time-Interleaved SAR ADC With a Digital-Mixing Timing-Skew Calibration Technique

作者：Lin Chin Yu; Wei Yen Hsin; Lee Tai Cheng^*

来源：IEEE Journal of Solid-State Circuits, 2018, 53(5): 1508-1517.

DOI：10.1109/JSSC.2018.2793535

• Delta-sampling auxiliary SAR analog-to-digital converter (ADC)
• digital-mixing calibration
• figure of merit (FoM)
• interleaving spurious tone
• time-interleaved SAR ADC
• timing skew

A 16-channel time-interleaved 10-bit SAR analog-to-digital converter (ADC), employing the proposed delta-sampling auxiliary SAR ADCs and a digital-mixing calibration technique to compensate timing-skew error, achieves a 2.6-GS/s sampling rate. The ADC has been fabricated in a 40-nm CMOS technology and achieves a 50.6-dB signal-to-noise-and-distortion ratio at Nyquist rate while dissipating 18.4 mW from a 1.1-V power supply. The digital calibration improves interleaving spurious tones from -33.6 to -63.2 dB in the best case.

• 出版日期2018-5
• 单位中国科学院电工研究所