Design of 4-Bit Flash ADC Using Inverter Threshold Comparator in 45nm Technology

In electronic circuits digital signals are processed hence Analog to Digital Converters(ADC) are required to produce digital signals from Analog signals. ADC's are used in high speed applications and signal processing systems. Hence there is requirement that ADC's must have low power, low area and low cost. Here the 4-bit Flash ADC is designed using the inverter threshold comparator and the binary encoder. It is designed in cadence environment using gpdk 45nm technology. ITC is the modification of the TMCC (Threshold Modified Comparator Circuit). The ITC can be implemented by changing the aspect ratio of the inverter. For supply voltage of 1.1 V and operating frequency of 100kHz, the average power consumed by the design is 16.82μW.