Title :
A 12-bit 50MS/s Low-Power Pipeline ADC for WiMAX
Author :
Wu, Heijim ; Li, Zhengping ; Zhang, Huabin ; Wang, Yongping
Author_Institution :
Syst. Design Div., Runxin Inf. & Technol. Co.,Ltd., Guangzhou, China
Abstract :
In this paper, a 12-bit 50-MS/s pipeline analog-to-digital converter(ADC) is presented. A digital-adjustable bias current generator scales the opamp bias currents. By this means, the power consumption can be adjustable according to the use. The switched-capicitor comparator is used to improve the sub-ADC´ accurrency and minimize the offset. The effective number of bits is 11.3 when a input signal with 2 Vp-p signal swing is applied. The ADC is designed in a 0.13-¿m CMOS process and consumes 55 mW under a 2.5 V power supply.
Keywords :
WiMax; analogue-digital conversion; comparators (circuits); low-power electronics; switched capacitor networks; WiMAX; analog-to-digital converter; digital-adjustable bias current generator; low-power pipeline ADC; opamp bias currents; power 55 mW; power consumption; size 0.13 mum; switched-capacitor comparator; voltage 2 V; voltage 2.5 V; Circuits; Degradation; Design automation; Energy consumption; Logic arrays; Mechatronics; Pipelines; Sampling methods; Switches; WiMAX; ADC; LTE; WiMAX; pipeline; wireless;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2010 International Conference on
Conference_Location :
Changsha City
Print_ISBN :
978-1-4244-5001-5
Electronic_ISBN :
978-1-4244-5739-7
DOI :
10.1109/ICMTMA.2010.759
