Analysis of the linearity of pipelined ADC due to capacitor non-linearity

Author

Saberi, Mehdi ; Lotfi, Reza

Author_Institution

EE Dept., Ferdowsi Univ. of Mashhad, Mashhad, Iran

fYear

2009

fDate

13-16 Dec. 2009

Firstpage

403

Lastpage

406

Abstract

In this paper, the effect of capacitor non-linearity on the linearity of a pipelined ADC is analyzed. First, the effect of capacitor non-linearity on the characteristics of a 1.5-bit residue stage is discussed and its transfer function is calculated. Then, a closed-form formula for the SFDR of the entire ADC as a function of capacitor non-linearity coefficient is calculated. Behavioral simulations as well as transistor-level simulations of a 10-bit 10MS/s pipelined ADC in a 0.18 Â¿m standard CMOS technology are presented to show the accuracy of proposed equations.

Keywords

CMOS digital integrated circuits; analogue-digital conversion; capacitor nonlinearity; pipelined analog-to-digital converters; size 0.18 mum; standard CMOS technology; transistor-level simulations; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS technology; Capacitance; Circuit simulation; Integrated circuit technology; Linearity; MIM capacitors; Nonlinear equations; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on

Conference_Location

Yasmine Hammamet

Print_ISBN

978-1-4244-5090-9

Electronic_ISBN

978-1-4244-5091-6

Type

conf

DOI

10.1109/ICECS.2009.5410907

Filename

5410907