A 14-bit 300 MHz Current-Steering Digital-to-Analog Converter

• Main Authors: Chiou, Shiuan-Tse, 邱宣策
• Other Authors: Kuo, Chien-Hung
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/3azgtb

碩士 === 國立臺灣師範大學 === 電機工程學系 === 107 === In the recent years, because the technology of integrated circuits develop rapidly, it improves the technique of mobility communication. Nowadays, the fourth generation of mobile communication has become popular, and mobile communication devices have become a necessity. The emergence of femtocells has increased the coverage of communication signals to maintain good transmission quality. In order to construct a femtocell base station capable of accurately transmitting packets, the design of a high resolution and high sample frequency digital-to-analog converter is very important. In this paper, a 14-bit 300MHz digital-to-analog converter is achieved by current-steering architecture, and this 14-bit circuit consists of three segments. Two of it is a 6-bit thermometer-based converter, and the other is a 2-bit binary-weighted converter. The supply voltage in analog and digital is applied in 1.8 V and 1 V, respectively. From the measurement results, a peak SFDR of 44.72 dB is achieved in TSMC 0.18μm 1P6M mixed-signal CMOS, and the power consumption is 23.52 mW.