A 4 Bit, 1.22v A New MUX Encoder Based Flash ADC using TIQ Technique

Analog to Digital Converter (ADC) is one of the most important block in the real world domain because the electronic devices only understanding the digital or discrete values, but the real world operating in the form of analog in nature so the ADC interface between the real world and digital domain. There is a lot of improvement has to be done in the field of analog world in order to match characteristics between the analog and digital domain. In this reference, 4 bit TIQ Flash ADC is designed using Threshold Inverter Quantization Comparator, Gain Booster and a new MUX based Encoder. TIQ comparator sets the internal reference voltage by varying the width of the CMOS transistor and eliminates the conventional resistor network of the Flash ADC resulting in reduce in the power, area and improves the performance in digital conversion. The MUX based encoder is different from the traditional encoder, it reduces the hardware with the fast conversion of thermometer code to binary code. This project is designed and implemented using the Cadence Virtuoso Tool with gpdk_90nm CMOS technology. The proposed ADC consumes the less power i.e2.16mW, area is of 0.00421��2 and the sampling rates is of 3.2GSPS compared to the traditional TIQ Flash ADC. Designed Flash ADC used in SoC, Battery Powered, Communication and Mobile applications.