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《MWA5121、MWA5157通用宽带集成放大器》一文在本刊今年第一、三期上发表后,收到不少读者来信询问有关问题。下面就几个比较集中的问题给予解答。1.请给出MWA5121、MWA5157两种集成电路的外形尺寸及各引脚排列图。上述两种型号能否互换代用?MWA5121、MWA5157的内部电路,封装方式、外形尺寸以及各引脚排列都基本相同(见附图),附图MWA5121、MWA5157的主要技术参数亦基本相同,从原文附表可知,MWA5121的增益和噪声系数等指标比MWA5157还要好些。由此可见,在一般情况下,MWA5121、MWA5157是可以互换使用
After the article “MWA5121, MWA5157 Universal Broadband Integrated Amplifier” was published in the first and third issues of this year, many readers were sent letters asking questions. Here’s a few more focused questions to answer. 1. Please give MWA5121, MWA5157 two IC size and layout of the pinout. The above two models interchangeable alternative? MWA5121, MWA5157 the internal circuit, package, dimensions and pinout are basically the same (see photo), MWA5121, MWA5157 main technical parameters are basically the same, from The original table shows, MWA5121 gain and noise figure and other indicators than the MWA5157 even better. Thus, in general, MWA5121, MWA5157 are interchangeable