low-noise preamplifier

基本解释

During testing process, Low-noise preamplifier is adopted to lower the background noise for the testing system.
采用低噪声前置放大器使整个系统的背景噪声充分降低；
The amplifier consists of a low-noise preamplifier stage, a current-mode instrumentation amplifier stage, a buffer stage, and a constant-g_m bias stage.
电路适用于卡肤电极系统，包括低噪声前置放大级、由电流模仪表放大器构成的主放大级、输出缓冲级和恒跨导偏置级。
For every circuit unit, mainly analyzing and designing the low-noise preamplifier, rule control amplifier and linearity precision detector unit circuit and so on.
各单元电路设计时，从整个测量系统误差的角度分析设计低噪音前置放大器、程控放大器、线性精密检波器等单元电路。