A low power sample-and-hold amplifier

被引:0
|
作者
Tani, H [1 ]
Fujimoto, Y [1 ]
Maruyama, M [1 ]
Akada, H [1 ]
Ogawa, H [1 ]
Miyamoto, M [1 ]
机构
[1] Sharp Co Ltd, Adv Technol Res Labs, Tenri, Nara, Japan
关键词
D O I
10.1109/ESSCIRC.2003.1257176
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
A novel power reduction technique is proposed for a sample-and-hold amplifier (SHA) with two stage operational amplifier. This technique improves the bandwidth and the slew rate of the SHA, therefore the power consumption of the SHA can be reduced. A variable gain amplifier (VGA) used in an analog-digital interface system for mega-pixel CCD image sensors is implemented. Fabricated in 0.25-mum CMOS process with MIM capacitors, the VGA occupies 0.49 x 0.49 mm(2) and dissipates 18.7 mW at 18 MHz with a supply voltage of 3.1 V.
引用
收藏
页码:477 / 480
页数:4
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