摘要
利用单片机MSP430F449设计宽带直流放大器。采用单片机MSP430F449作为宽带直流放大器的控制芯片,利用三级放大器级联的形式实现对输入小信号的放大。其中MSP430F449单片机来控制双路数模转换器TLV5638实现AD603的程控增益调节和整体后级放大模块引入的直流的软件补偿,并利用OPA847作为固定增益放大器。通过实验数据证明整个系统输出稳定,性能良好。该系统具有可行性和实用性。
The design uses microcomputer MSP430F449 as control chip to make a broadband DC amplifier. Small signal is amplify by using the three-level cascade connection of amplifiers. The two-way D/A converter TLV5638 is controlled by the microcomputer MSP430F449. Achieve the AD603 programmable gain control and overall grade amplifier module after the introduction of DC software compensation and overall grade amplifier module after the introduction of DC software compensation and use OPA847 as a fixed gain amplifier. Through experimental data showing that the output of the entire system is stability, the whole system has the good performance. The system has feasibility and practicability.
出处
《电子设计工程》
2013年第11期71-74,共4页
Electronic Design Engineering
基金
宝鸡文理学院第五批重点建设课程项目
