现代电子技术2012，Vol.35Issue(3)：188-190,3.
程控增益低噪声宽带直流放大器的设计
Design of low noise programmable gain wide-band DC amplifier
摘要
Abstract
The design philosophy and flow of low noise programmable gain wide-band DC amplifier are presented. The fabricated low noise amplifier was cascaded with low noise integrated programmable gain op-amp AD603 and high-frequency transistor 2N2219 and 2N2905 and other devices. The input voltage is less than 10 mV, the output signal is 10 V, pass band is 0～8 MHz, the maximum gain is 53 dB, and the gain in 0～50 dB, 5 dB step can be controlled by the microcontroller. In addition, fluctuation in gain and bandwidth is less than ldB of the two level wide-band low-noise DC amplifier.关键词
低噪声/程控增益/功率放大/宽带直流放大器Key words
low noise/ programmable gain/ power amplifier/ wide-band DC amplifier分类
信息技术与安全科学引用本文复制引用
孙科学,卜新华,唐珂..程控增益低噪声宽带直流放大器的设计[J].现代电子技术,2012,35(3):188-190,3.基金项目
南京邮电大学青蓝计划(NY210036)资助项目 （NY210036）
教改项目(JG003311JX26)资助 （JG003311JX26）
