What is the evolution of comparator and zero-crossing based circuit design?

Table 4 shows the evolution of comparator and zero-crossing based circuit design and performance since the development of the first prototype CBSC pipeline ADC. Every new design roughly halved the FOM while increasing the ENOB or the sampling rate or both. The latest design discussed in Section II-C is compared with the state of the art in Table 5.

What is a zero-crossing based circuit?

ZERO-CROSSING BASED CIRCUITS Since only the zero-crossing detection function is needed from the threshold detection comparator in a CBSC circuit, the comparator can be replaced by a zero-crossing detector (ZCD). A dynamic inverter shown in Fig. 1 can be employed as a ZCD . Initially, the output voltage VP of the ZCD is charged up to VDD.

Can zero-crossing a/D converters reduce power consumption?

A vast stride has been zero-crossing based A/D converters and discusses the techni- made in lowering power consumption and improving cal issues unique to these A/D converters as well as solutions performance and functionality simultaneously.

What is a zero-crossing detector?

In zero-crossing detectors, leading to the development of zero- contrast to the advances in electronic circuits, battery crossing based circuits for faster speed and lower power. All technology has progressed at a much slower pace, making facets of performance including the sampling rate, effective low-power circuit design critical.

Why do we need zero-crossing detection for a high-performance analog-to-digital converter (ADC)?

However, this trend increases the performance demand on analog-to-digital converters (ADCs), which are analog circuits themselves. In order to address ultra-low-power design for the high-performance ADCs that are demanded of modern electronics systems, we have developed a new ADC archi-tecture based on zero-crossing detection.

How to prevent multiple zero-crossing detection?

An alternative solution to preventing multiple zero-crossing detection is to introduce transient rejection time after the detection of a zero-crossing by the ZCD circuit. During the transient rejection time, output of the ZCD circuit does not change in response to zero-crossing of the input.