||Because IC (Integrated Circuit) has some good features like: little, low power consumption, and high stable, so it already popularly applied to our daily life. Operation is one of the main functions of IC, and now operate function achieve in digital mode of many IC products. Although digital circuits have many advantages, but we live in the analog world, natural signals are all analog. Digital circuits can’t direct process analog signals, and therefore we have a requirement of analog-to-digital converter.|
As time goes by, IC technology has made great progress; digital circuits have faster process ability, and we also require a high speed analog-to-digital converter. Besides, in order to achieve higher picture quality and clearer voice, we also require a high resolution analog-to-digital converter. For portable products, the power consumption also needs to take into account. As mentioned above, I will implement a high speed, high resolution and low power analog-to-digital converter.
In this thesis, the circuits are designing with TSMC.18μm 1P6M CMOS process and 1.8V of supply voltage. The speed and resolution of ADC are 100Ms/s and 12bits individually. The pipelined coupling with 1.5bit/stage constitutes the main architecture of analog-to-digital converter. The dynamic comparator is used for lower power. Finally, the output codes are translated by digital correction circuit.
Keywords: ADC, Analog-to-Digital Converter, pipeline, low power, amplifier, comparator.