14-Bit Current-Sterring D/A Converter for Precision mechanical training Systematic

• Main Authors: WANG, PI-CHI, 王丕智
• Other Authors: LEE, DA-HUEI
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/p7nep7

碩士 === 南臺科技大學 === 電子工程系 === 107 === This work uses the power sensor on the smart glove and the back-end signal processing system to transmit and record the change of hand power wirelessly. Combined with the IOT of the Internet, the apprentice can make a similarity to the demonstrator through the interface. The action, at the same time, through the hand power system to get the same strength feedback, so that the apprentice achieves a more efficient learning effect. The sensor can also be applied to the probe test analysis of the wafer test after the size reduction, and the probe directly analyzes the signal generated by the sensor and analyzes the condition of the probe through the signal processing system. The 14-bit current-steering architecture digital analog converter in this work is current-steering architecture. The MSB and ULSB of the input signal are controlled by the random thermometer encoding circuit and then controlled by the latch circuit, and are synchronized when the transistor is switched in the driving current source, thereby reducing the amount of extreme voltage disturbance of the current source switching transistor to reduce the surge. occur. At present, the resolution of the digital analog converters that have been published is mostly less than 12 bits, and is applied to a converter that requires a higher resolution to process weak signals. At present, the active area of related research has been mostly more than 1mm2. Considering the mass production cost and high resolution factor, this paper uses TSMC 0.18um1P6M process to design a 14-bit analog converter with active area less than 1 mm2. The Pre-sim result has a noise-free dynamic interval capability of 86.5 dB, a noise-free dynamic interval capability of 62.7 dB after adding parasitic effects, and a total active area of 0.19 mm2.