Title :
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
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 ¿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;
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
DOI :
10.1109/ICECS.2009.5410907
