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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) Ŭ·Ï º¸Á¤È¸·Î¸¦ °¡Áø 1V 1.6-GS/s 6-bit Flash ADC
¿µ¹®Á¦¸ñ(English Title) 1V 1.6-GS/s 6-bit Flash ADC with Clock Calibration Circuit
ÀúÀÚ(Author) ±è»óÈÆ   È«»ó±Ù   ÀÌÇÑ¿­   ¹Ú¿ø±â   ÀÌ¿Õ¿ë   À̼ºÃ¶   À念Âù   Sang-hun Kim   Sang-Geun Hong   Han-yeol Lee   Won-ki Park   Wang-Yong Lee   Sung-chul Lee   Young-Chan Jang  
¿ø¹®¼ö·Ïó(Citation) VOL 16 NO. 09 PP. 1847 ~ 1855 (2012. 09)
Çѱ۳»¿ë
(Korean Abstract)
Ŭ·Ï º¸Á¤È¸·Î¸¦ °¡Áø 1V 1.6-GS/s 6-ºñÆ® flash ¾Æ³¯·Î±×-µðÁöÅÐ º¯È¯±â (ADC: analog-to-digital converter)°¡ Á¦¾ÈµÈ´Ù. 1VÀÇ ÀúÀü¾Ð¿¡¼­ °í¼Ó µ¿ÀÛÀÇ ÀԷ´ÜÀ» À§ÇØ bootstrapped ¾Æ³¯·Î±× ½ºÀ§Ä¡¸¦ »ç¿ëÇÏ´Â ´ÜÀÏ track/hold ȸ·Î°¡ »ç¿ëµÇ¸ç, ¾Æ³¯·Î±× ³ëÀÌÁîÀÇ °¨¼Ò¿Í °í¼ÓÀÇ µ¿ÀÛÀ» À§ÇØ Æò±ÕÈ­ ±â¹ýÀÌ Àû¿ëµÈ µÎ ´ÜÀÇ ÇÁ¸®¾ÚÇÁ¿Í µÎ ´ÜÀÇ ºñ±³±â°¡ ÀÌ¿ëµÈ´Ù. Á¦¾ÈÇÏ´Â flash ADC´Â Ŭ·Ï º¸Á¤È¸·Î¿¡ ÀÇÇØ Å¬·Ï duty cycle°ú phase¸¦ ÃÖÀûÈ­ÇÔÀ¸·Î flash ADCÀÇ µ¿Àû Ư¼ºÀ» °³¼±ÇÑ´Ù. Ŭ·Ï º¸Á¤ ȸ·Î´Â ºñ±³±â¸¦ À§ÇÑ Å¬·ÏÀÇ duty cycleÀ» Á¦¾îÇÏ¿© evaluation°ú reset ½Ã°£À» ÃÖÀûÈ­ÇÑ´Ù. Á¦¾ÈµÈ 1.6-GS/s 6-ºñÆ® flash ADC´Â 1V 90nmÀÇ 1-poly 9-metal CMOS °øÁ¤¿¡¼­ Á¦À۵Ǿú´Ù. Nyquist sampling rateÀÎ 800 MHzÀÇ ¾Æ³¯·Î±× ÀԷ½ÅÈ£¿¡ ´ëÇØ ÃøÁ¤µÈ SNDRÀº 32.8 dBÀ̸ç, DNL°ú INLÀº °¢°¢ 0.38/-0.37 LSB, 0.64/-0.64 LSBÀÌ´Ù. ±¸ÇöµÈ flash ADCÀÇ ¸éÀû°ú Àü·Â¼Ò¸ð´Â °¢°¢ 800 ¡¿ 500 ¥ìm2¿Í 193.02 mW ÀÌ´Ù.
¿µ¹®³»¿ë
(English Abstract)
A 1V 1.6-GS/s 6-bit flash analog-to-digital converter (ADC) with a clock calibration circuit is proposed. A single track/hold circuit with a bootstrapped analog switch is used as an input stage with a supply voltage of 1V for the high speed operation. Two preamplifier-arrays and each comparator composed of two-stage are implemented for the reduction of analog noises and high speed operation. The clock calibration circuit in the proposed flash ADC improves the dynamic performance of the entire flash ADC by optimizing the duty cycle and phase of the clock. It adjusts the reset and evaluation time of the clock for the comparator by controlling the duty cycle of the clock. The proposed 1.6-GS/s 6-bit flash ADC is fabricated in a 1V 90nm 1-poly 9-metal CMOS process. The measured SNDR is 32.8 dB for a 800 MHz analog input signal. The measured DNL and INL are 0.38/-0.37 LSB, 0.64/-0.64 LSB, respectively. The power consumption and chip area are 800 ¡¿ 500 ¥ìm2 and 193.02mW.
Å°¿öµå(Keyword) Flash ADC   Ŭ·Ï º¸Á¤   duty cycle   ´ÜÀÏ track/hold   ÀúÇ× Æò±ÕÈ­ ±â¹ý   ºñ±³±â   Flash ADC   clock calibration   duty cycle   single track/hold   resistor averaging network   comparator  
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