Integrating type analog-to-digital converters (ADC) used in column-parallel CMOS image
sensors trade conversion speed with size, power, and complexity to achieve optimal …

The application requirements of high frame rate CMOS image sensors (CIS) in the industry
have not been satisfied due to the speed limitations in traditional single-slope and serial two …

The semiconductor industry is driven by the need to design smaller, faster and low power
consuming circuits. A comparator is an integral part of any electronic system and by default …

The objective of this research is to develop an ADC stage integrated into ROIC which
enables ROIC to have digital output. Digital output method isolates noise caused by outside …

This letter introduces a novel two-step Single Slope Analog-to-Digital Converter (SS-ADC)
architecture featuring high 3-bit and low 7-bit quantization stages. It reuses the …

Readout Integrated Circuits (ROIC) have been commonly implemented with analog video
output buffers throughout history. Image signals are converted into digital by an external …

A massive number of images and videos are captured by mobile phone cameras every day.
Thus, the built-in cameras become essential in almost all produced mobile phones and …

This thesis presents a study on solutions to high-speed analog-to-digital conversion in
CMOS image sensors using time-interpolation methods. Data conversion is one of the few …

The main component of Analog to Digital Converter (ADC) Single Slope type is an Analog
Unit. The analog unit is designed precisely to meet characteristics of the ADC. The ADC …

A ramp signal generation circuit 21 comprises a plurality of unit circuits 22 1 to 22 N, each
including a capacitor 26 having one end 26 a held at a fixed potential and a current source …