文件编号Document No.ESP-07-2-007-03文件名称Document Name产品/工艺变更通知Product/Process Change Notice(PCN)文件版本Document Version1.4保存期限Retention Period5 年5 yearswww.espressif.com Page1/5ESP32-S2、ESP32-S3、ESP8684、ESP8685、ESP32-C3 芯片规格书“支持外部功率放大器”功能移除Remove "External power amplifier support" Feature in ESP32-S2, ESP32-S3, ESP8684, ESP8685,ESP32-C3 Chip DatasheetsPCN 编号PCN No.PCN20221102提出日期Issue Date of PCN2022/12/01变更日期Proposed Date of Change2022/12/14预计变更后产品首次出货日期Proposed Date of FirstShipment After ChangeNA，产品无变更Product has nochange.PCN 类型 / PCN Category客户需要批准/ Customer Approval Required客户通知/ Customer Notification1.影响产品名称/ Affected Product NameESP32-S2 SeriesESP32-S3 SeriesESP8684 SeriesESP8685 SeriesESP32-C3 Series2.变更原因/ Reason for Change在ESP32-S2、ESP32-S3、ESP8684、ESP8685和ESP32-C3芯片规格书>产品特性> Wi-Fi部分，“支持外部功率放大器”被列为芯片的特性之一。然而，并不建议用户在这些芯片产品上外接外部功率放大器，原因如下：这些芯片产品本身的发射功率已经非常高，例如，ESP32-S3能达到20 dBm，因此，没有必要使用外部功率放大器，而且增加外部功率放大器也不会显著提高性能。In ESP32-S2, ESP32-S3, ESP8684, ESP8685 and ESP32-C3 chip datasheets > Features > Wi-Fi section,the item “External PA is supported” or “Supports external power amplifier” is listed as a feature. Yet, it is notrecommended for users to use external power amplifier for these chip products for the following reason:These chip products already have very high TX power, for example, 21 dBm for ESP32-S3. Therefore, thereis no need to use external PA, and adding an external PA hardly improves the performance.3. 变更描述/ Description of Change在 ESP32-S2、ESP32-S3、ESP8684、ESP8685 和 ESP32-C3 芯片规格书 > 产品特性 > Wi-Fi 部分，移除“支持外部功率放大器”。In ESP32-S2, ESP32-S3, ESP8684, ESP8685 and ESP32-C3 chip datasheets > Features > Wi-Fi section,remove the item “External PA is supported” or “Supports external power amplifier”. www.espressif.com Page2/54. 变更对比/ Change Comparison请见附录 I：变更对比。Please refer to Appendix I: Change comparison.5. 变更影响/ Impact of Change1) 品质和性能/ Quality & Performance: 无影响/ No impact2) 交期/ Delivery: 无影响/ No impact3) 生产料号/ Material Part Numbers (MPN): 无影响/ No impact4) 认证/ Certification: 无影响/ No impact5) 软件/ IDF：无影响/ No impact6. 变更前后产品处理/ How to Deal with ProductsNA， 产品无变更。Product has no change.7.相关报告/ Related Report(s):Related ECN No.ECN-2022-043 www.espressif.com Page3/5Appendix I 变更对比/ Change Comparison1. 变更基本信息/ Change General Information芯片系列Chip Series变更前数据规格书版本Datasheet Version Before Change变更后数据规格书版本Datasheet Version After ChangeESP32-S2v1.4v1.5ESP32-S3v1.4v1.5ESP8684v1.0v1.1ESP8685v1.0v1.1ESP32-C3v1.3v1.4注/Note：乐鑫技术规格书可查阅技术文档。Espressif technical Datasheet can see on Technical Documents.2. 变更详细信息/ Change Detailed Information以ESP32-S3芯片数据规格书为例：Take ESP32-S3 Chip Datasheet as an example:中文版本变更前与变更后：Chinese datasheet before and after change: www.espressif.com Page4/5英文版本变更前与变更后：English datasheet before and after change: www.espressif.com Page5/5邮件订阅Espressif Email Notifications乐鑫为注册用户提供电子邮件通知服务，用户可通过乐鑫订阅系统接收技术文档更新、新闻通讯、PCN 等邮件通知。Espressif sends email notifications of technical documentation changes, along with newsletters, PCNs andother valuable information, to subscribed customers only. If you wish to stay updated on our products andservices, please subscribe here.客户响应要求Customer Response Requirements需客户批准的变更/ Change Requiring Customer Approval：a) 客户须在乐鑫发出 PCN 后的 30 天内告知乐鑫已收到 PCN。如客户未在接收到 PCN 后的 30 天内告知已收到，则视为客户收到变更。Customers are requested to acknowledge receipt of the PCN within 30 calendar days from the date ofissue of the PCN. Customers would be considered as notified 30 calendar days after issue of the PCN if noacknowledgement is received.b) 自发布 PCN 之日起 90 天内，客户没有任何其他反馈，则表示客户接受该 PCN。The lack of any additional responses from customers within 90 calendar days from the date of issue of thePCN constitutes acceptance of the proposed changes.客户通知/ Customer Notification：a)客户需在乐鑫发出PCN后14天内通知乐鑫收到该PCN。 如客户未在接收到PCN 14日反馈乐鑫，则视为客户确认该PCN。Customers are requested to acknowledge receipt of the PCN within 14 calendar days from the date ofissue of the PCN. Customers would be considered as having acknowledged the PCN if no response isreceived after 14 calendar days.请反馈至pcn@espressif.com。Please send feedback to pcn@espressif.com.客户批准/确认信息Customer Approval/Acknowledgement and Remarks客户公司全称：Customer’s Company Name:PCN 评审结果/ PCN Review Result：批准/确认 Accepted/Acknowledged不批准/ Rejected需要分析/ Further Analysis Required客户意见/Comment:公司代表人姓名Representative’s Name:公司代表人职责Representative’s Job Title:公司代表人签名Representative’s Signature:日期Date: