Browsing by Author "Huang, Chun-Cheng"

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A CMOS 6-Bit 16-GS/s Time-Interleaved ADC Using Digital Background Calibration Techniques
(2011-04-01)
Huang, Chun-Cheng
;
Wang, Chung-Yi
;
Wu, Jieh-Tsorng
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
An 8-channel 6-bit 16-GS/s time-interleaved analog-to-digital converter (TI ADC) was fabricated using a 65 nm CMOS technology. Each analog-to-digital channel is a 6-bit flash ADC. Its comparators are latches without the preamplifiers. The input-referred offsets of the latches are reduced by digital offset calibration. The TI ADC includes a multi-phase clock generator that uses a delay-locked loop to generate 8 sampling clocks from a reference clock of the same frequency. The uniformity of the sampling intervals is ensured by digital timing-skew calibration. Both the offset calibration and the timing-skew calibration run continuously in the background. At 16 GS/s sampling rate, this ADC chip achieves a signal-to-distortion-plus-noise ratio (SNDR) of 30.8 dB. The chip consumes 435 mW from a 1.5 V supply. The ADC active area is 0.93 x 1.58 mm(2).
A CMOS 6-Bit 16-GS/s Time-Interleaved ADC with Digital Background Calibration
(2010)
Huang, Chun-Cheng
;
Wang, Chung-Yi
;
Wu, Jieh-Tsorng
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
An 8-channel 6-bit 16-GS/s time-interleaved ADC was fabricated using a 65nm CMOS technology. Each A/D channel is a flash ADC using latch-type comparator with background offset calibration. Timing skews among the channels are also continuously calibrated in the background. The chip achieves 42.3dB SFDR and 30.8dB SNDR at 16 GS/s sampling rate.
High tension lines: Negative social exchange and psychological well-being in the context of instant messaging
(2019-04-01)
Tsai, Hsin-yi Sandy
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Hsu, Pei-Jung
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Chang, Chih-Ling
;
Huang, Chun-Cheng
;
Ho, Hsin-Fang
Instant messengers (IM) mediate several types of negative social exchanges that can affect the psychological well-being of their users. Using an instant messenger popular in Taiwan (LINE) as an example, this study examined the relationship between IM communication and well-being. An online survey was conducted and found that negative IM social exchanges in which messages were ignored by their recipients, interfered with other activities, or contained hostility or ridicule were directly related to a global measure of negative social exchange that included face-to-face as well as online interactions. Insensitive IM social exchanges were positively related to loneliness, depression, and fear of missing out (FoMO), and were negatively related to social support.