Title :
A 79 dB-SNR 70 mW 18 MHz CCD front-end with fully-digital amplification scheme
Author :
Nitta, Shozo ; Tanaka, Kenji
Author_Institution :
Texas Instrum. Japan, Kanagawa, Japan
fDate :
8/1/2001 12:00:00 AM
Abstract :
This paper presents a fully monolithic 10 bit front end for CCD cameras which incorporates a 14 bit analog-to-digital converter (ADC) and a digital programmable gain amplifier (DPGA). With the adoption of a fully-digital amplification scheme, it solves almost all the problems associated with the conventional front-ends and attains low-noise, low-power and robust gain characteristic. Test results show a 79 dB SNR (@gain=0 dB) with the power consumption of 70 mW @18 MHz
Keywords :
CCD image sensors; amplifiers; analogue-digital conversion; cameras; monolithic integrated circuits; programmable circuits; 10 bit; 14 bit; 18 MHz; 70 mW; 79 dB; ADC; CCD cameras; CCD front-end; analog-to-digital converter; digital programmable gain amplifier; full-digital amplification; low-noise characteristic; low-power front-end; monolithic front end; power consumption; robust gain characteristic; Analog integrated circuits; Charge coupled devices; Charge-coupled image sensors; Digital cameras; Digital integrated circuits; Electronics packaging; Energy consumption; Performance gain; Robustness; Signal resolution;
Journal_Title :
Consumer Electronics, IEEE Transactions on
