Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
ÇѱÛÁ¦¸ñ(Korean Title) |
Áö¿¬ °íÁ¤ ·çÇÁ ±â¹ÝÀÇ ÁöÅÍ ¾ïÁ¦ Ŭ·Ï ¹ß»ý±â |
¿µ¹®Á¦¸ñ(English Title) |
A Jitter Suppressed DLL-Based Clock Generator |
ÀúÀÚ(Author) |
ÃÖ¿µ½Ä
°í±â¿µ
Young-Shig Cho
Gi-Yeong Ko
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¿ø¹®¼ö·Ïó(Citation) |
VOL 21 NO. 07 PP. 1261 ~ 1266 (2017. 07) |
Çѱ۳»¿ë (Korean Abstract) |
Áö¿¬ ½Ã°£ Àü¾Ð ºÐ»ê º¯È¯±â (DVVC) ¹× Æò±Õ ȸ·Î (AC)°¡ ÀÖ´Â ÁöÅÍ ¾ïÁ¦ Áö¿¬ °íÁ¤ ·çÇÁ (DLL) ±â¹Ý Ŭ·Ï ¹ß»ý±â¸¦ Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈÇÑ Å¬·Ï ¹ß»ý±â´Â Áö¿¬°íÁ¤·çÇÁ¿¡¼ ¹«ÀÛÀ§·Î ¹ß»ýÇÏ´Â ÁöÅÍ¿Í È¸·ÎÀÇ ±¸Á¶¿¡ ÀÇÇØ ¹ß»ýÇÏ´Â ÁöÅ͸¦ ¾ïÁ¦Çϵµ·Ï ÇÏ¿´´Ù. Áö¿¬ ½Ã°£ Àü¾Ð ºÐ»ê º¯È¯±â´Â °¢ Áö¿¬´ÜÀÇ Áö¿¬ Â÷À̸¦ °¨ÁöÇÏ°í Ãâ·Â Àü¾ÐÀ» »ý¼ºÇÑ´Ù. Æò±Õȸ·Î´Â µÎ°³ÀÇ ¿¬¼ÓµÇ´Â Áö¿¬ ½Ã°£ Àü¾Ð ºÐ»ê º¯È¯±âÀÇ Ãâ·Â Àü¾ÐÀ» Æò±ÕÈ ÇÑ´Ù. Áö¿¬ ½Ã°£ Àü¾Ð ºÐ»ê º¯È¯±â ¹× Æò±Õ ȸ·Î´Â ¿¬¼ÓÀûÀÎ Áö¿¬´ÜÀÇ Áö¿¬ ½Ã°£À» Æò±ÕÈÇÏ°í ¸ðµç Áö¿¬´ÜÀÇ Áö¿¬ ½Ã°£À» µ¿ÀÏÇÏ°Ô ¸¸µç´Ù. ¶ÇÇÑ ·çÇÁÇÊÅÍ Ãâ·Â Àü¾ÐÀÇ º¯µ¿À» ÁÙÀ̱â À§ÇØ ºÎ±Ëȯ ±â´ÉÀ¸·Î È¿°úÀûÀÎ ÀÛµ¿À» ÇÏ´Â ½ºÀ§Ä¡°¡ ÀÖ´Â Ä¿ÆнÃÅÍ°¡ µµÀԵǾú´Ù. One-poly six-metal 0.18¥ìm CMOS °øÁ¤À¸·Î Á¦ÀÛ µÈ DLL ±â¹Ý Ŭ·Ï ¹ß»ý±âÀÇ ÃøÁ¤ °á°ú´Â 13.4 ps rms ÁöÅÍƯ¼ºÀ» º¸¿©ÁØ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
A random and systematic jitter suppressed delay locked loop (DLL)-based clock generator with a delay-time voltage variance converter (DVVC) and an averaging circuit (AC) is presented. The DVVC senses the delay variance of each delay stage and generates a voltage. The AC averages the output voltages of two consecutive DVVCs to suppress the systematic and random delay variance of each delay stage in the VCDL. The DVVC and AC averages the delay time of successive delay stages and equalizes the delay time of all delay stages. In addition, a capacitor with a switch working effectively as a negative feedback function is introduced to reduce the variation of the loop filter output voltage. Measurement results of the DLL-based clock generator fabricated in a one-poly six-metal 0.18¥ìm CMOS process shows 13.4-ps rms jitter.
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Å°¿öµå(Keyword) |
Ŭ·Ï ¹ß»ý±â
Áö¿¬ °íÁ¤ ·çÇÁ
Æò±Õ ȸ·Î
Áö¿¬ ½Ã°£ Àü¾Ð ºÐ»ê º¯È¯±â
Clock generator
Delay locked loop
Average circuit
Delay variance voltage converter
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ÆÄÀÏ÷ºÎ |
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