Title :
A low power and high precision DAC in 0.13µm CMOS for DVS system
Author :
Shi, Tingting ; Hou, Sijian ; Luo, Ping ; Yang, Ruhui ; Chen, Jun ; Zhen, Shaowei ; Zhang, Bo
Author_Institution :
State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A low power and high precision digital to analog converter (DAC) for Dynamic Voltage Scaling (DVS) system is presented and demonstrated in this paper. Based on conventional resistor string architecture, the DAC is compensated by digitally controlled on-resistance network to improve output precision. The proposed 5-bit DAC can produce 0.7V~1.475V, 25mV per step voltage as programmable reference in DVS system. The DAC is implemented by 0.13μm CMOS technology. The static power dissipation is 26.4μW when the power supply voltage is 3.3V and the reference voltage is 0.61V. The simulation results show that the output error is decreased from 5.64mV to 0.43mV after digital calibration. The conversion speed is less than 2.5μs; the digital input code transition frequency of the proposed DAC can reach 400K Hz. The performance satisfies the requirement of DVS system.
Keywords :
CMOS integrated circuits; digital-analogue conversion; low-power electronics; CMOS technology; DAC; DVS system; conventional resistor string architecture; digital calibration; digital input code transition frequency; digital to analog converter; digitally controlled on-resistance network; dynamic voltage scaling system; frequency 400 kHz; power 26.4 muW; programmable reference; size 0.13 mum; static power dissipation; voltage 0.43 mV; voltage 0.61 V; voltage 3.3 V; voltage 5.64 mV; word length 5 bit; CMOS integrated circuits; CMOS technology;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8224-5
DOI :
10.1109/ICCCAS.2010.5581929
