Title :
OTA-based Gray-code Algorithmic ADC
Author :
Chaikla, Amphawan ; Arayawat, Somjai ; Riewruja, Vanchai
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok
Abstract :
This paper presents a Gray-code algorithmic analog-to-digital converter (ADC). The proposed circuit comprises of OTAs, diodes, resistors, and voltage comparator to synthesize a triangular-like DC transfer characteristic and a digital output for an one-bit cell ADC. The design structure is simple and flexible. An N-bit resolution can be implemented by cascading the N proposed one-bit cells. Experimental results verifying the circuit performances are agreed with the theoretical values
Keywords :
analogue-digital conversion; operational amplifiers; Gray-code algorithm; N-bit resolution; OTA; analog-to-digital converter; diodes; operational transconductance amplifiers; resistors; triangular-like DC transfer characteristic; voltage comparator; Analog-digital conversion; Bandwidth; Circuit optimization; Circuit synthesis; Diodes; Resistors; Signal generators; Signal resolution; Transconductance; Voltage; Gray coding; OTA-based circuit; algorithmic ADC;
Conference_Titel :
SICE-ICASE, 2006. International Joint Conference
Conference_Location :
Busan
Print_ISBN :
89-950038-4-7
Electronic_ISBN :
89-950038-5-5
DOI :
10.1109/SICE.2006.314677
