“The CMOS Inverter” as a Comparator in ADC Designs

Design of 6-Bit Flash Analog to Digital Converter Using Variable Switching Voltage CMOS Comparator

“…It has been observed that the peak power for proposed VSV comparator is 96.37µW & its average power is only 2.144µW. While reported TIQ comparator [6] consumes peak power of 380µW and its average power is 26.407 µW. There is almost 70% reduction in the peak power.…”

“…The power is measured & compared for both TIQ comparator [6] and proposed VSV comparator. It has been observed that the peak power for proposed VSV comparator is 96.37µW & its average power is only 2.144µW.…”

“…In [7], the thorough theoretical background of static CMOS inverter is elaborated. Using the aforementioned concept, a CMOS inverter has been realized as a threshold inverter quantization (TIQ) comparator [6]. The design of proposed TIQ comparator is a simpler as compared to traditional analog differential comparator.…”

The Quantized Differential Comparator in Flash Analog to Digital Converter Design

“…Some of the problems of the conventional comparator structures used in A/D designs can be listed as follows [1]:…”

“…The Threshold Inverter Quantizer (TIQ), based on systematic transistor sizing of a CMOS inverter in a full-flash scheme, eliminates the resistor array implementation of conventional comparator array flash designs [1,2]. Therefore no static power consumption is required for quantizing the analog input signal, making the idea very attractive for battery-powered applications.…”