基于VCA610自动增益放大器的设计解析.doc

2015 届毕业设计说明书 基于VCA610的自控增益放大器的设计 院 部： 电气与信息工程学院 学生姓名： 许 君 指导教师： 职称 专 业： 电子信息工程 班 级： 电子XXXX班 完成时间： 2015年6月 摘 要 社会的进步离不开先进的生产力，而生产力的提高需要依托强大的技术支持，尤其是自动增益控制技术。自动增益控制（AGC）在各行各业都有着广泛的应用，比如：仪器仪表与检测技术、低压电器技术、自动控制技术、工业机器人技术和工业通信技术。自动增益控制技术与生活息息相关，对它的学习也显得格外重要。 设计一个，可以采用搭建自动增益放大电路设计简单，易于实现的自动控制。自动控制系统，采用控制器提供控制电压，使其的信号输出稳定的幅值，输出信号过电路、三极管电路输出的直流信号通过放大电路、电路经过处理，带负载能力得到提高，实现要求这样完整的基于自控增益放大系统就搭建完成了,仿真调试，结果分析得出结论。 关键词 ：自动增益控制；MSP430F169；VCA610；放大器；调试BSTCACT The progress of the society is inseparable from the advanced productive forces, and productivity rely on strong technical support, especially the automatic gain control technology. Automatic gain control (AGC) has been widely used in all walks of life, for?example: Instrumentation and testing technology, low voltage electrical technology, automatic control technology, industrial robot technology and communication technology industry. Automatic gain control technology is closely related to life, and to study the technology is very important. VCA610 amplifier can be used to build automatic gain amplifier circuit for designing an automatic gain amplifier, the design is simple, and easy to realize automatic control of signals. The automatic gain control system is based on VCA610, using MSP430F169 microcontroller as controller, the controller provides control voltage for VCA610 amplifier, and make its control signal output stable, The output of the AC signal through OPA620 amplification circuit and transistor push-pull circuit; The DC signal output through magnifying circuit and expanding flow circuit; Signal is treated respectively with AC/DC, and Load will be enhanced , so, it will reach to the design requirements, a complete automatic gain amplifier system which is set up completed by VCA610, through simulating and debugging, reach to results, and draw a conclusion. Through studying VCA610 automatic gain amplifier circuit, it can strengt