Title :
A low-power CMOS pipeline ADC using multiple sharing technique for ZigBee transceiver
Author :
Zhou Zhao ; Mingzheng Wang ; Hongsheng Zhong
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A 10bit, 20MS/s pipeline ADC is proposed for ZigBee transceiver in this paper. Due to demand of low power, a multiple sharing technique involved operational operational amplifier (opamp) and comparator is proposed, traditional S/H circuit is cancelled, a new gain boosting switch which could achieve sample and hold in first stage is also proposed. Implemented in a 0.18μm CMOS process, only 19.6mW power consumption from 1.8V power supply is achieved. SNR and SFDR are 61.5dB and 66.24dB, respectively, when a 1MS/s sinusoid signal inputs to the ADC at 20MS/s sampling rate. Particularly the test results show this pipeline ADC is suitable for a low power consumption ZigBee system.
Keywords :
CMOS integrated circuits; Zigbee; analogue-digital conversion; comparators (circuits); low-power electronics; operational amplifiers; radio transceivers; CMOS process; ZigBee transceiver; comparator; gain boosting switch; low power consumption; low-power CMOS pipeline ADC; multiple sharing technique; opamp; operational amplifier; power 19.6 mW; size 0.18 mum; voltage 1.8 V; word length 10 bit; Boosting; Capacitors; Pipelines; Power demand; Switches; Transceivers; Zigbee; Comparator sharing technique; Low power consumption; Opamp sharing technique; Pipeline ADC; S/H-less;
Conference_Titel :
TENCON 2013 - 2013 IEEE Region 10 Conference (31194)
Conference_Location :
Xi´an
Print_ISBN :
978-1-4799-2825-5
DOI :
10.1109/TENCON.2013.6718949
