The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Sistem berkelajuan tinggi memerlukan sistem jam julat frekuensi lebar untuk pemprosesan data. Gelung berkunci fasa (PLL) digunakan untuk sistem sedemikian yang memerlukan jam frekuensi pembolehubah jarak lebar. Kaedah penentukuran frekuensi membolehkan pengayun terkawal voltan (VCO) dalam PLL untuk meliputi julat frekuensi yang dijangkakan untuk aplikasi berkelajuan tinggi yang memerlukan julat penguncian yang luas. Pelarasan julat frekuensi dilaksanakan melalui penukar digital kepada analog (DAC) semasa, yang mengawal keluk prestasi VCO dan litar pincang. Kaedah ini melaraskan lengkung prestasi voltan frekuensi VCO sebelum operasi berfungsi supaya PLL boleh meliputi julat frekuensi yang diminta dengan keadaan terbaiknya. Kedua-dua had voltan kawalan dan voltan rujukan sasarannya diberikan dengan rujukan voltan yang sama. Ini memastikan prestasi yang betul selepas pelarasan kekerapan walaupun di bawah turun naik suhu. Ia menghapuskan pelarasan fizikal pasca pengeluaran seperti pemangkasan fius yang meningkatkan kos dan TAT dalam pembuatan dan ujian. VCO julat penguncian lebar berkelajuan tinggi dengan litar penentukuran prestasi frekuensi automatik dilaksanakan dalam ruang kecil dalam saluran pemacu cakera keras berkelajuan tinggi dengan teknologi logam empat lapisan CMOS 0.25-µm 2.5 V.
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Salinan
Takeo YASUDA, "High-Speed Wide-Locking Range VCO with Frequency Calibration" in IEICE TRANSACTIONS on Fundamentals,
vol. E83-A, no. 12, pp. 2616-2622, December 2000, doi: .
Abstract: High-speed systems require a wide-frequency-range clock system for data processing. Phase-locked loop (PLL) is used for such a system that requires wide-range variable frequency clock. Frequency calibration method enables the voltage-controlled oscillator (VCO) in a PLL to cover the expected frequency range for high-speed applications that require a wide locking range. Frequency range adjustment is implemented by means of a current digital to analog converter (DAC), which controls the performance curves of a VCO and a bias circuit. This method adjusts the VCO's frequency-voltage performance curves before functional operation so that a PLL can cover requested frequency range with its best condition. Both the limit of control voltage and its target reference voltage are given with same voltage reference. This ensures correct performance after frequency adjustment even under the temperature fluctuation. It eliminates post-production physical adjustment such as fuse trimming which increases the cost and TAT in manufacturing and testing. A high-speed wide-locking range VCO with an automatic frequency performance calibration circuit is implemented within small space in a high-speed hard disk drive channel with 0.25-µm 2.5 V CMOS four-layer metal technology.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e83-a_12_2616/_p
Salinan
@ARTICLE{e83-a_12_2616,
author={Takeo YASUDA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={High-Speed Wide-Locking Range VCO with Frequency Calibration},
year={2000},
volume={E83-A},
number={12},
pages={2616-2622},
abstract={High-speed systems require a wide-frequency-range clock system for data processing. Phase-locked loop (PLL) is used for such a system that requires wide-range variable frequency clock. Frequency calibration method enables the voltage-controlled oscillator (VCO) in a PLL to cover the expected frequency range for high-speed applications that require a wide locking range. Frequency range adjustment is implemented by means of a current digital to analog converter (DAC), which controls the performance curves of a VCO and a bias circuit. This method adjusts the VCO's frequency-voltage performance curves before functional operation so that a PLL can cover requested frequency range with its best condition. Both the limit of control voltage and its target reference voltage are given with same voltage reference. This ensures correct performance after frequency adjustment even under the temperature fluctuation. It eliminates post-production physical adjustment such as fuse trimming which increases the cost and TAT in manufacturing and testing. A high-speed wide-locking range VCO with an automatic frequency performance calibration circuit is implemented within small space in a high-speed hard disk drive channel with 0.25-µm 2.5 V CMOS four-layer metal technology.},
keywords={},
doi={},
ISSN={},
month={December},}
Salinan
TY - JOUR
TI - High-Speed Wide-Locking Range VCO with Frequency Calibration
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2616
EP - 2622
AU - Takeo YASUDA
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E83-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2000
AB - High-speed systems require a wide-frequency-range clock system for data processing. Phase-locked loop (PLL) is used for such a system that requires wide-range variable frequency clock. Frequency calibration method enables the voltage-controlled oscillator (VCO) in a PLL to cover the expected frequency range for high-speed applications that require a wide locking range. Frequency range adjustment is implemented by means of a current digital to analog converter (DAC), which controls the performance curves of a VCO and a bias circuit. This method adjusts the VCO's frequency-voltage performance curves before functional operation so that a PLL can cover requested frequency range with its best condition. Both the limit of control voltage and its target reference voltage are given with same voltage reference. This ensures correct performance after frequency adjustment even under the temperature fluctuation. It eliminates post-production physical adjustment such as fuse trimming which increases the cost and TAT in manufacturing and testing. A high-speed wide-locking range VCO with an automatic frequency performance calibration circuit is implemented within small space in a high-speed hard disk drive channel with 0.25-µm 2.5 V CMOS four-layer metal technology.
ER -