Title :
A 2 V, 10 b, 20 Msample/s, mixed-mode subranging CMOS A/D converter
Author :
Yotsuyanagi, Michio ; Hasegawa, Hiroshi ; Yamaguchi, Motoi ; Ishida, Masaki ; Sone, Kazuya
Author_Institution :
Syst. ULSI Res. Lab., NEC Corp., Sagamihara, Japan
fDate :
12/1/1995 12:00:00 AM
Abstract :
We have developed a 2 V, 10 b, 20 MS/s, mixed-mode (voltage-mode and current-mode) subranging CMOS A/D Converter (ADC) suitable for video-signal processing systems. Its 2 V supply voltage and 20 mW power consumption are lower than those of any other video-rate ADC reported to date. This ADC employs voltage-mode circuitry for coarse 5 b A/D conversion and current-mode circuitry for fine 6 b A/D conversion. In addition to this mixed-mode subranging architecture, a newly developed differential comparator and a new current-tree A/D conversion architecture also contribute to the achievement of high speed at low supply voltage
Keywords :
CMOS integrated circuits; analogue-digital conversion; comparators (circuits); video signal processing; 10 bit; 2 V; 20 mW; CMOS A/D converter; current-mode; current-tree ADC architecture; differential comparator; high speed operation; low supply voltage; mixed-mode subranging ADC; video-signal processing systems; voltage-mode; CMOS process; Current mode circuits; Degradation; Dynamic range; Energy consumption; Linearity; Low voltage; Neodymium; Operational amplifiers; Power supplies;
Journal_Title :
Solid-State Circuits, IEEE Journal of
