Espressif Systems ESP32-S3 - Page 3

4.10.3 Waterproof and Proximity Sensing Design . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.11 Typical Layout Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.11.1 1. The voltage ripple is not large, but the TX performance of RF is rather poor. . . . . . . 36
4.11.2 2. When ESP32-S3 sends data packages, the voltage ripple is small, but RF TX perfor-
mance is poor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.11.3 3. When ESP32-S3 sends data packages, the power value is much higher or lower than the
target power value, and the EVM is relatively poor. . . . . . . . . . . . . . . . . . . . . . 37
4.11.4 4. TX performance is not bad, but the RX sensitivity is low. . . . . . . . . . . . . . . . . 38
5 Hardware Development 39
5.1 ESP32-S3 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2 ESP32-S3 Development Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.3 Download Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6 Related Documentation and Resources 41
7 Glossary 43
8 Revision History 45
8.1 ESP Hardware Design Guidelines v1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9 Disclaimer and Copyright Notice 47
ii