Title :
A New Simultaneous Multislope ADC Architecture for Array Implementations
Author_Institution :
Electron. Devices, Linkoping Univ.
Abstract :
This brief presents a new simultaneous multislope analog-digital converter (ADC) architecture suitable for array implementations in, e.g., CMOS image sensors (CISs). The simplest implementation is almost twice as fast as a conventional-slope ADC, while it requires only a small amount of extra circuitry. Measurements have been performed on a custom made CIS which implements parts of the proposed ADC. The measurements show good linearity and verify the concept of the new architecture
Keywords :
CMOS image sensors; analogue-digital conversion; CMOS image sensors; analog-digital converter; array implementations; multislope ADC architecture; CMOS image sensors; Calibration; Capacitors; Clocks; Counting circuits; Image converters; Linearity; Performance evaluation; Sensor arrays; Voltage; Analog–digital converter (ADC); CMOS image sensors (CISs); analog–digital (A/D) conversion; simultaneous multislope (SMS); single slope;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.881817
