Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer

Circuit design of Track-And-Hold Amplifier in Ultra-High-speed Folding-Interpolating ADC

Authors
Yongcong Liu, Jianye Wang, Hao Ding
Corresponding Author
Yongcong Liu
Available Online June 2016.
DOI
10.2991/mmebc-16.2016.322How to use a DOI?
Keywords
Track-And-Hold Amplifier(THA); linearity; open-loop structure; switch emitter follower sampling switch; feed-through compensation circuit
Abstract

Among the designs of ultra-high-speed analog to digital converter, folding-interpolating structure has great advantages in control of chip area and power dissipation. But the frequency-doubled effect of folding-interpolating ADC will restrict dynamic performances of ADC, such as bandwidth and linearity, etc. However, introducing Track-And-Hold Amplifier(THA) into folding-interpolating ADC can ease these shortages effectively, and thus improve dynamic performances of ADC. The structure of THA adopts open-loop structure, which could help realize the request of high speed without the influence of feedback circuit. To improve the circuit linearity, the input buffer adopts open-loop linearization technology and the output buffer adopts method of compensation and cancellation. Sampling switch also choose switch emitter follower sampling switch with greater dynamic performances. By introducing feed-through compensation capacitance, the input signal and hold signal can be completely separated, which could also help improve dynamic performances of circuit. Finally, the designed THA is taken a simulation with 3GHz clock frequency and 500MHz input frequency. The results of the simulation show that the THA can keep great dynamic performances even in ultra-high clock frequency, which lays solid foundation for further design of ultra-high-speed folding-interpolating ADC.

Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer
Series
Advances in Engineering Research
Publication Date
June 2016
ISBN
978-94-6252-210-7
ISSN
2352-5401
DOI
10.2991/mmebc-16.2016.322How to use a DOI?
Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Yongcong Liu
AU  - Jianye Wang
AU  - Hao Ding
PY  - 2016/06
DA  - 2016/06
TI  - Circuit design of Track-And-Hold Amplifier in Ultra-High-speed Folding-Interpolating ADC
BT  - Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer
PB  - Atlantis Press
SP  - 1585
EP  - 1590
SN  - 2352-5401
UR  - https://doi.org/10.2991/mmebc-16.2016.322
DO  - 10.2991/mmebc-16.2016.322
ID  - Liu2016/06
ER  -