TY - GEN
T1 - High fill-factor native logarithmic pixel
T2 - 2000 IEEE International Symposium on Circuits and Systems, ISCAS 2000
AU - Bermak, Amine
AU - Bouzerdoum, Abdesslam
AU - Eshraghian, Kamran
PY - 2000
Y1 - 2000
N2 - In this paper we investigate important issues in the design of the logarithmic CMOS pixel. In particular, much attention is paid to the optimization of pixel performance in terms of output gain, dynamic range, and fill-factor. In order to increase the gain-bandwidth product, we propose to use the native transistor as source follower. The performance of such a pixel is compared with that of conventional logarithmic pixels. It is shown that the native source follower yields a significant increase in the gain-bandwidth product. In addition, we propose a layout floor-planning strategy which allows us to achieve a 46% fill-factor. In order to compare the performance of the proposed pixel with the conventional NMOS and PMOS logarithmic pixels, a VLSI prototype has been realized using 0.7 μm CMOS technology.
AB - In this paper we investigate important issues in the design of the logarithmic CMOS pixel. In particular, much attention is paid to the optimization of pixel performance in terms of output gain, dynamic range, and fill-factor. In order to increase the gain-bandwidth product, we propose to use the native transistor as source follower. The performance of such a pixel is compared with that of conventional logarithmic pixels. It is shown that the native source follower yields a significant increase in the gain-bandwidth product. In addition, we propose a layout floor-planning strategy which allows us to achieve a 46% fill-factor. In order to compare the performance of the proposed pixel with the conventional NMOS and PMOS logarithmic pixels, a VLSI prototype has been realized using 0.7 μm CMOS technology.
UR - https://www.scopus.com/pages/publications/0033702502
U2 - 10.1109/ISCAS.2000.857422
DO - 10.1109/ISCAS.2000.857422
M3 - Conference contribution
AN - SCOPUS:0033702502
SN - 0780354826
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - V-293-V-296
BT - ISCAS 2000 - 2000 IEEE International Symposium on Circuits and Systems
PB - IEEE
Y2 - 28 May 2000 through 31 May 2000
ER -