AD9850 DDS Signal Generator Module, 0-55 MHz Frequency with LCD Display

AD9850 DDS Signal Generator Module with LCD Display This compact signal generator module is built around the AD9850 DDS chip and delivers a frequency range from 0 to 55 MHz with continuous adjustment in precise 1 Hz steps. The integrated LCD screen provides clear readouts, making it straightforward to monitor and fine-tune your output signal during bench work or testing setups. Connection and Power Requirements The module includes a 78L05 voltage regulator, and for reliable operation an input current of 200 mA with an input voltage between 8 and 9 V is recommended. While a 12 V supply can be used, it should only be applied for short-term testing as the board will heat up with prolonged use. The 14-pin connection (8 V GND) draws its 8 V power directly from the main board. Encoder and Matrix Connections For setup, connect the 5p and 6p pins to the encoder as shown in the accompanying photo. The centre 7p pin connects to the digital matrix input, allowing straightforward integration into your existing circuit layout. This arrangement keeps wiring clear and simplifies installation when adding the module to a larger project. Practical Use With its 0-55 MHz frequency range and fine 1 Hz stepping, this generator suits a range of signal generation tasks, from audio through to HF applications. The combination of the LCD readout and encoder control makes it easy to dial in the exact frequency you need without guesswork, whether you are aligning circuits, testing filters or developing prototypes.