While Σ∆M techniques [l, 2] are applied widely in analog conversion sub-systems, both analog-to-digital (ADC) and digital-to-analog (DAC) converters. these methods have enjoyed much less exposure in the broader application domain, where flexible and configurable solutions, traditionally supplied via a software DSP (soft-DSP), are required. And this limited level of exposure is easy to understan...

A CMOS image sensor ADC using delta-sigma modulation is presented and discussed. Experimental results from a test chip are presented. The experimental results show that the proposed ADC has several benefits over the use of pipeline ADCs including noise reduction, fast design times, ease with which to maximize ADC output based on a varying input range, and simple symmetric analog routing for lar...

Manifold models in data analysis and signal processing have become more prominent recent years. In this paper, we will look at one of the main tasks modern processing, namely, analog-to-digital (A/D) conversion connection with a simple manifold model — circle. We focus on Sigma-Delta modulation which is popular method for A/D bandlimited signals that employs coarse quantization coupled oversamp...

the rapid scaling in modern cmos technology has motivated the researchers to design new analog-to-digital converter (adc) architectures that can properly work in lower supply voltage. an exchanging the data quantization procedure from the amplitude to the time domain, can be a promising alternative well adapt with the technology scaling. this paper is going to review the recent development in t...

In order to eliminate the use of operational amplifiers (opamps) in sampled-data systems and thus avoid several delicate tradeoffs involved with their design, a new class of switched-capacitor circuits based on comparators was reported. The novelty of this comparator-based switched-capacitor (CBSC) design method is the detection of a virtual ground condition rather than forcing it through feedb...

The rapid scaling in modern CMOS technology has motivated the researchers to design new analog-to-digital converter (ADC) architectures that can properly work in lower supply voltage. An exchanging the data quantization procedure from the amplitude to the time domain, can be a promising alternative well adapt with the technology scaling. This paper is going to review the recent development in t...

A self-calibrated two-point delta–sigma modulation technique for CMOS RF transmitter is proposed. This calibration technique employs voltage-controlled oscillator (VCO) and delta–sigma modulator input ports in a frequency synthesizer. By monitoring the control voltage of a loop filter, the gain mismatch between two paths can be detected and completely calibrated by modifying the gain of the VCO...

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