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本文以高精度传感器的前置放大器为例,全面地系统地论述了低噪声弱信号前置放大器的设计方法,探讨了弱信号放大器中的各种干扰,提出了一些行之有效的抗干扰措施。并介绍了一种经过实践考验的低噪声弱信号放大器。
In this paper, a high precision sensor preamplifier is taken as an example to discuss the design method of low noise and weak signal preamplifier comprehensively and systematically, and the various interferences in the weak signal amplifier are discussed. Some effective antijamming measures . And introduced a kind of low-noise weak signal amplifier that has been tested by practice.