With this you can fully reveal all the capabilities of the DDS AD9910 Shield. Opensource Software available on our GitHub repository: afch/DDS-AD9910-Arduino-Shield. Video review on our YouTube channel: youtu. AD9910 Shield Board (Bare PCB). Set of Parts and Components (Electronics, Screws, Nuts, Spacers).OLED Display (optional , choose in selector). Arduino MEGA Board (optional , choose in selector). Clock Chip (optional , choose in selector). BOM List of Parts and Components for DIY KIT. We recommend to use RF Amplifier and Low Pass Filter with our DDS Shield Boards.
RF Amplifier LNA 8-2000 MHz, GAIN = 20 dB, P = +20 dBm + LDO MMIC MRFA89 SOT-89. Low-Pass Filter LPF 7th Order Elliptical 1-1000Mhz 3.5 7 14 28 144 433MHz etc.
Low harmonics no more than -60dBc. An output RF transformer is used for the correct operation of the current mirror. Signal lines TOP and Bottom, inner layers Ground and Power. Separate power supply for all analog and digital lines (1.8V and 3.3V), 5 pcs IC voltage stabilizers are used.
Additionally, there is an RF Ferrite bead interchange. High-speed decoupling Level converter and TTL 5V matching. Types of possible reference oscillators (choose one of them in the selector).XO Crystal 25 MHz 20 ppm internal oscillator with PLL at 1 GHz. TCXO 10 MHz 1 ppm external oscillator PLL at 1 GHz (up to 1.5 GHz). EGEN external generator up to 1.5 GHz. (To connect an external clock source of up to 1.5 GHz, this source is NOT INCLUDED). OCXO Oven Controlled Crystal Oscillators deliver the ultimate piezo electric performance with stabilities down to less than ±1 ppm.
Additionally balancing transformer is used for TCXO, EGEN and OCXO options. Easy to connect OLED display. Control buttons for control via the program menu.The software allows you to select and configure the frequency of the clock generator through the user menu (without the need to recompile the program). Any settings can be stored in non-volatile EEPROM memory (located at Arduino Mega). Basic settings are applied and saved automatically. This shield support overclocking the AD9910 core to 1.5 GHz. DDS AD9910 Shield has ability to generate a signal up to 600 MHz with a core overclocking up to 1.5 GHz. (to suppress harmonics, it is recommended to overclock the AD9910 for frequencies above 400 MHz). Has ability to increase output power by +4 dBm when DAC Current HI is activated.
Since the intrinsic phase noise of DDS is obviously less than that of PLL generators, the final value is highly dependent on the clock source. In order to achieve the values stated in the datasheet for AD9910, we strictly adhered to all recommendations from Analog Devices. When designing our DDS AD9910 Arduino Shield we have followed these requirements.PCB layout in 4 layers, separate power supply of all 4 power lines (3.3 V digital, 3.3 V analog, 1.8 V digital, and 1.8 V analog). Figure 16 shows the noise level when using the built-in PLL in DDS. The PLL multiplies the frequency of a 50 MHz generator by 20 times. We use a similar frequency 40 MHz (x25 Multiplier) or 50 MHz (x20 Multiplier) from TCXO which gives even more stability. Figure 15 shows the noise level when using an external reference clock 1 GHz, with the PLL off. DDS AD9910 Arduino Shield Phase Noise. That is, when using an external clock phase noise by 15 dBc better (lower).
That is, when using an external clock phase noise by 34 dBc better (lower). Conclusion: when using external clocking, you can get much lower phase noise than using the built-in PLL. But do not forget that in order to achieve such results, increased requirements are put forward to the external generator. DDS AD9910 Core Clock Menu. DDS AD9910 FM Modulation Menu.
If you have ANY questions, PLEASE ASK US. 100 kHz - 420 MHz (600 MHz) in 1 Hz step. +0 dBm (+4) to -84 dBm (on 50 Ohm load). 1 Vpeak-to-peak (at +4 dBm). USB or External Power Supply 7V DC 1A.10 Hz to 100 kHz in 1 Hz step. 0% to 100% in 1% increments. Modulation Frequency for FM (Frequency Modulation). 0 Hz to 100 kHz in 1 Hz step.
Reference clock sources (on choice). XO-Crystal Oscillator, TCXO 1ppm, OCXO 0.1ppm, Crystek, or External Oscillator up to 1.5 Ghz. When overclocking the core to 1.5 GHz When the "DAC Current HI" function is activated. DDS AD9910 Arduino Shield References. AD9910 Shield Board Top Bare PCB.
AD9910 Shield Board Bottom Bare PCB. AD9910 Shield Board Top Populated PCB. AD9910 Shield Board Bottom Populated PCB. DIY KIT for DDS AD9910 Shield.
DDS AD9910 Arduino Shield Spectrograms. GRA & AFCH DDS AD9910 Shield VS DDS Board from China Spectrograms Comparison. Spectrum Analyzer Screenshots (200 MHz).
Spectrum Analyzer Screenshots (350 MHz). Spectrum Analyzer Screenshots (100 MHz). Spectrum Analyzer Screenshots (10 MHz). GRA & AFCH DDS AD9910 Shield Spectrograms. 500 MHz, DAC Current set to HI.
600 MHz, DAC Current set to HI. FM (Frequency Modulation) Frequency: 1 kHz Deviation: 3 kHz. Arduino MEGA to Shield AD9910 Pinout Scheme.DDS AD9910 Arduino Shield Thermal images. DDS Arduino Shield AD9910 RF Signal Generator Overview. Please refer to full video Overview of our DDS AD9910 Shield RF Signal Generator on our YouTube channel:'GRA & AFCH. DDS Arduino Shield AD9910 RF Signal Generator. The item "DIY KIT DDS AD9910 Arduino Shield RF Signal Generator 600MHZ @ 1.5GSPS Low spurs" is in sale since Wednesday, September 15, 2021. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Signal Sources & Conditioning\Signal Generators". The seller is "gra_and_afch" and is located in Dnipro. This item can be shipped worldwide.