A Behavior Model of Discrete Sampling and Hold Amplifier based on AC Response

A kind of behavior model for discrete sampling and hold amplifier with charge transmission is analyzed. The transfer function and behavior features are based on the main AC responses of operation amplifier. The result used in pipelined and sigma-delta ADC shows the exact of model of sampling and hold amplifier, and the non-ideal factors are taken into account.

• Wang Xing-hua
• Zhong Shun-an
• Zhang Zhuo

• SHA
• response
• behavior
• transfer function.

[1] P. R.Gray, R.G Meyer. Analysis and Design of Analog Integrated
Circuits,2nd Edition New York: Wiley,1982.
[2] Waltari M E, Halonen K A I. Circuit techniques for low-voltage and high
speed A/D converters (M). Dordrecht, Netherlands, Kluwer Academic
Publisher, 2002.
[3] Liu Chang-Wei. A loop charge method for the Z-domain analysis of
switched-capacitor networks. Journal of electronics & information
technology, 1994, 16(1) : 96-101.
[4] Ahmadi M.A new modeling and optimization of gain-boosted cascade
amplifier for high-speed and low-voltage applications (J).IEEE Tran.
Circuit Syst.II, 2006,53(3):169-173.
[5] Chouia Y, Ei-Sankary K, Saleh A, et al. 14b, 50MS/s CMOS front-end
sample and hold module dedicated to a pipelined ADC(C). In: The 47th
IEEE International Midewest Symposium on Circuits and Systems, 2004:
353-356.
[6] Ma Wei-Wei, Wang You-Ren, Shi Yu, CuiHui. Reconfigurable analog
circuit and application design based on operational transconductance
amplifier. Journal of electronics & information technology, 2009, 31 (7):
1775-1778.