low-noise preamplifier

基本解释

During testing process, Low-noise preamplifier is adopted to lower the background noise for the testing system.
採用低噪聲前置放大器使整個系統的背景噪聲充分降低；
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.
電路適用於卡膚電極系統，包括低噪聲前置放大級、由電流模儀表放大器搆成的主放大級、輸出緩沖級和恒跨導偏置級。
For every circuit unit, mainly analyzing and designing the low-noise preamplifier, rule control amplifier and linearity precision detector unit circuit and so on.
各單元電路設計時，從整個測量系統誤差的角度分析設計低噪音前置放大器、程控放大器、線性精密檢波器等單元電路。