[问答]

LMX2595EVM焊接后的成品相噪没有达到EVM板的水准怎么处理？

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问答对人有帮助，内容完整，我也想知道答案 0 你好，我们在按照LMX2595EVM板进行了一个信号源的设计时，原理图参考EVM板设计，但是在焊接时由于工作人员操作水平较低，导致焊接后的成品相噪没有达到EVM板的水准，请问，焊接工艺有何建议，后者在不规范的焊接工艺下有没有什么调整可以弱化焊接做相噪带来的恶化。（补焊人员已经崩溃类目）。 weibo.com/ttarticle/p/show?id=2309405100948438515855 weibo.com/ttarticle/p/show?id=2309405100948837236856 weibo.com/ttarticle/p/show?id=2309405100948556218448 weibo.com/ttarticle/p/show?id=2309405100948581384425 weibo.com/ttarticle/p/show?id=2309405100948795294104 weibo.com/ttarticle/p/show?id=2309405100948497235983 weibo.com/ttarticle/p/show?id=2309405100948283588836 weibo.com/ttarticle/p/show?id=2309405100948656619596 weibo.com/ttarticle/p/show?id=2309405100948753351129 weibo.com/ttarticle/p/show?id=2309405100948719796398 weibo.com/ttarticle/p/show?id=2309405100948736573949 weibo.com/ttarticle/p/show?id=2309405100948287783138 weibo.com/ttarticle/p/show?id=2309405100948606550382 weibo.com/ttarticle/p/show?id=2309405100948686241931 weibo.com/ttarticle/p/show?id=2309405100948640104658 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答案对人有帮助，有参考价值 0 针对您的问题，我将提供一些建议来帮助您解决焊接工艺问题以及如何弱化焊接对相噪的影响。以下是一些建议： 1. 焊接工艺建议： a. 使用合适的焊接工具：确保使用合适的焊接工具，如恒温烙铁、焊锡丝和助焊剂。 b. 保持烙铁温度适中：过高的烙铁温度可能导致焊点氧化，影响性能。建议将烙铁温度保持在300-350摄氏度。 c. 焊接时间控制：焊接时间不宜过长，以免损坏元件。一般建议焊接时间为2-3秒。 d. 焊接技巧：使用正确的焊接技巧，如拖焊法和点焊法，以减少焊接过程中的热应力。 e. 检查焊接质量：焊接完成后，仔细检查焊点，确保焊点光滑、无氧化、无虚焊。 2. 弱化焊接对相噪的影响： a. 优化PCB布局：优化PCB布局，减少信号线之间的干扰，降低噪声。 b. 增加地线：在PCB上增加地线，以减少地线阻抗，降低噪声。 c. 使用屏蔽：在敏感信号线周围增加屏蔽层，以减少外部干扰。 d. 优化电源设计：优化电源设计，确保电源稳定性，降低电源噪声对相噪的影响。 e. 调整元件参数：根据实际情况调整元件参数，如电容、电阻等，以降低相噪。希望以上建议能对您有所帮助。如果问题仍然存在，建议您寻求专业人士的帮助，或者联系LMX2595EVM板的制造商，以获取更专业的技术支持。

2024-11-18 11:45:38 评论举报 tulin