基于OPA842和OPA2356的宽带放大电路设计

宽带放大电路设计采用了美国Texas Instruments公司（一下简称TI）的OPA842和OPA2356低功耗、高速运算放大器。从电路结构方面详细论述了电路的阻抗匹配、无源衰减网络、宽带、增益的设计思路,并将该电路经过投片验证,设计出的运算放大器满足预期指标,取得了比较满意的结果。该电路具有很强应用灵活性、输入阻抗可调、过负载能力强、电路工作带宽、可靠性强等优点。在视频放大器、有源滤波器、高速数据转换器等电子系统中有着广泛的应用前景。

Based on the design of OPA84 and 2356 wide band enlargement circuit

The design of web enlargement circuit employs the OPA 842 and OPA2356 amplifier designed by Texas Instruments Company whic h has low power consuming and high speed calculating characteristics.it states clearly about input impedance match,inactive power decline net w eb,widc band and transmission gain designs. After the create--lot experiment,it designs a calculation amplifier to meet the expected target and a chieves a satisfactory solution.The circuit has strong application flexibility.The input impedance is adjustable.The load capacity is strong and th e web is reliablc It has a wide application prospect in video amplifier,active power filter circuit,and high speed data converter and so on.