35M-4.4G Signal Generator Frequency Counter PLL Sweep Signal Source Module Touch Screen 2.2-4.4G fundamental wave ,Avoid Switching Noise

- Refer to the official evaluation board circuit and layout. - Output Signal: 2.2-4.4G fundamental wave (sine wave); 35M-2.2G fundamental wave frequency division (square wave). - Default ±50ppm 25M imported active crystal oscillator. Provide circuit diagram in PDF, and STM32 test program.