基于MSP430的采集系统设计



1．基本要求

（1）放大器将DDS输出的弱信号放大至2-3V，其中增益可调；

（2）带通滤波器：通带为300~4kHz ；

（3）ADC：采样频率f s＝40kHz，字长＝8位,使用MSP430内部ADC

（4）要求将采集的波形通过液晶屏予以显示，并在液晶屏上显示横轴和纵轴

-MSP430-based acquisition system 1. Basic requirements (1) the DDS output amplifier weak signal amplified to 2-3V, wherein the gain is adjustable　(2) band-pass filter: pass band 300 ~ 4kHz　(3) ADC: sampling frequency fs = 40kHz, word length = 8, using the MSP430 internal ADC (4) requires that the acquired waveform to be displayed through the LCD screen and the LCD screen displays horizontal and vertical axes