DDS Shield AD9910 600MHz 1.5GSPS RF Generator Low Noise Spurs WITHOUT ARDUINO

$189.0 Buy It Now or Best Offer
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Location: Dnipro
Ships to: US,
Item: 254839697340

All returns accepted:ReturnsNotAccepted
Signal Generator Type:RF Signal Generator
Modified Item:No
MPN:DDS9910
GRA & AFCH:GRA & AFCH
Frequency Range:600Mhz

DDS AD9910 Arduino Shield Signal Generatorsine wave 420Mhz @1GSPS Low Spurs Low Harmonic,up to sine wave output 600Mhz @1.5GSPS overclock,Attention needs a forced coolingWe provide FREE WORLDWIDE Economy shipping UPS Expedited delivery 3-5 days availableDDS AD9910 Shield for Arduino RF Signal Generator DDS (Direct Digital Synthesis) Analog Devices AD9910 Shield for ArduinoThis device is designed to ensure seamless integration with Arduino MEGA 2560It does not require any extra wires or converters to work properlyFor maximum performance we recommend Ultra-low noise reference oscillator RCLN1000All functions of the DDS AD9910 are brought to the contacts from the Arduino MEGAWith this you can fully reveal all the capabilities of the DDS AD9910 ShieldPCB Design Schematics Case and Software made by GRA & AFCH Opensource Firmware available on our GitHub repository: github.com/afch/DDS-AD9910-Arduino-ShieldDDS AD9910 Firmware compilation and uploading to Arduino Mega Tutorial: youtube.com/watch?v=Zn1xLlvlVXEVideo review of DDS AD9910 Shield on our YouTube channel: youtu.be/_MUsmr0cAD4 Listing includes: DDS AD9910 Shield Board (assembled)OLED display (included with the Shield Board)Clock Source (XO-Crystal oscillator) DDS AD9910 RF Unit support control from PC via Serial Port Commands Dear customers!If you have ANY questions, PLEASE ASK us Key features: Low harmonics no more than -60dBc. An output RF transformer is used for the correct operation of the current mirrorSmall spurs4 layer board. Signal lines TOP and Bottom, inner layers Ground and PowerLow Noise LDO StabilizersSeparate 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 interchangeHigh-speed decoupling Level converter and TTL 5V matching Types of reference oscillators (optional, choose in selectors):XO – Crystal 25.000 MHz 20 ppm internal oscillator with PLL at 1 GHzTCXO – 40.000/50.000MHz MHz 1 ppm internal oscillator with PLL at 1 GHzOCXO – Oven Controlled Crystal Oscillators deliver the ultimate piezo electric performance with stabilities down to less than ±1 ppmEGEN – External Generator up to 1.5 GHz (to connect an external clock source of up to 1.5 GHz, NOT INCLUDED)Additionally balancing transformer is used for TCXO/OCXO and EGEN options Additionally balancing transformer is used for TCXO, EGEN and OCXO options:Easy to connect OLED displayControl buttons for control via the program menuThe synthesizer is capable to generate sine wave, AM or FM modulated signalThe 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 automaticallyThis shield support overclocking the AD9910 core to 1.5 GHz (heatsink is recommended)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 Detailed description: Easy to connect OLED displayControl buttons for control via the program menuThe firmware 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 automaticallyExpanded and convenient DDS clock source menuOffset parameter allows adjusting the clock frequency if the deviation from the specified valueThis shield support overclocking the AD9910 core to 1.5 GHz (heatsink is recommended)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)It is possible to obtain a low frequency at the DDS output from 10 Hz (modification required, see instructions below)Has ability to increase output power by +4 dBm when “DAC Current HI” is activated Functional features: Support of OLED display (selectable in options)Buttons for navigating and controlling settings through the program menuDDS Shield is capable to generate Sine Wave, AM/FM modulated signal and SWEEPFirmware allows selecting and configuring frequency of the clock generator through the user menu(without the need to recompile and upload the program)All settings can be stored in non-volatile EEPROM memory (located in Arduino Mega 2560 Board)Basic settings are applied and saved automaticallyExpanded and convenient DDS Clock source menuOffset parameter allows adjusting the core clock frequency if the deviation from the specified value is knownShield supports overclocking the AD9910 core up to 1.5 GHz (heatsink is recommended in this case)DDS AD9910 Shield has the ability to generate 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)It is possible to obtain a low frequency at the DDS output from 10 Hz (modification required, see instructions below)Activating ‘DAC Current HI’ increases the output power capability by +4 dBm Electrical performance: Ensured low harmonic level with levels not exceeding -60dBc,this is due to the use of an output RF transformer for optimal current mirror operationLow Noise LDO Stabilizers with separate power supply for all analog and digital lines (1.8V and 3.3V),they utilizes 5 IC voltage stabilizers; additionally there is an RF Ferrite bead interchange4 layered PCB with signal lines on Top and Bottom and inner layers Ground and PowerHigh-speed decoupling Level converter and TTL 5V matchingRemote control of the DDS Generator through a USB connection and PC using the terminal serial port Specifications: Frequency:100 kHz – 420 MHz (600 MHz*)Spurs max:-60 dBcFrequency step:1 HzOutput power:+0 dBm (+4**) to -84 dBm (on 50 Ohm load)Output level up to:1 V peak-to-peak (at +4 dBm)Phase noise:-135 dBc/Hz @ 1 KHz offset (400 MHz Carrier)Output filter:LPF LC 7th Order 600 MHz cut-off (-3 dB)Modulation frequency for AM (Amplitude modulation):10 Hz to 100 kHz in 1 Hz stepAM modulation depth:0% to 100% in 1% incrementsModulation frequency for FM (Frequency modulation):10 Hz to 100 kHz in 1 Hz stepFM modulation deviation frequency:0 Hz to 100 kHz in 1 Hz stepReference clock sources (on choice):XO-Crystal Oscillator, TCXO 1ppm, OCXO 0.1ppm, Crystek, or External Oscillator up to 1.5 GhzPower requirements:USB or External Power Supply 7.5V DC 1AShield Board size:53 x 102 х 32 mm* When overclocking the core to 1.5 GHz** When the “DAC Current HI” function is activated Dear customers!If you have ANY questions, PLEASE ASK us Phase Noise: This parameter is very important and interesting for those who wants to buy DDS.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.Designing our DDS AD9910 Shield for Arduino we strictly adhered to all recommendations from Analog Devices.This was done In order to achieve the values stated in the datasheet for the AD9910.Among these are 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 below shows the phase noise level when using the built-in PLL in DDS.The PLL multiplies the frequency of the on-board 50 MHz TCXO generator by a factor of 20. The output frequency is 100 MHz. DDS9910 Phase Noise, PLL Enabled (50×20), Output: 100 MHz Figure below shows the phase noise level when using an external reference clock frequency of 1 GHz (RCLN1000), with the PLL OFF.The output frequency of the DDS is 100 MHz. DDS9910 External Clocking – 1GHz, Output: 100 MHz, Level: +4 dBm Let’s compare these two graphs, for example, at a 10 kHz offset from the carrier: with the internal PLL system engaged,the phase noise level is -129 dBc/Hz, while with the PLL system disengaged and using external clocking, the phase noise is -140 dBc/Hz.This means that using an external clock signal results in a phase noise that is 11 dBc/Hz better (lower).For the same output frequency, but at a 1 MHz offset from the carrier, with the internal PLL system engaged,the phase noise level is -124 dBc/Hz, while with the PLL system disengaged and using external clocking, the phase noise is -152 dBc/Hz.This means that using external clocking results in phase noise that is 23 dBc/Hz better (lower).Conclusion:When using external clock, 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 oscillator.For maximum performance we recommend our Ultra-low noise reference oscillator 1GHz RCLN1000. We recommend to use Ultra Low Noise Reference Oscillator with our DDS Shield Boards:RCLN1000 1GHz Ultra Low Noise Reference Oscillator https://www.ebay.com/itm/256107727808 If you need higher power output: The first and simplest method to increase the power from the nominal 0 dBm to +4 dBm is by activating the “Hi-Current” option in the menu (refer to Operation instruction).NOTE: enabling this setting leads to increase in harmonic levels of the output signal. If this level of power is still insufficient, there is a second method – connecting an external RF signal Amplifier, such as the MMIC MRFA89.It allows obtaining a DDS signal output power of up to +20 dBm.IMPORTANT: Since the MMIC MRFA89 Amplifier has maximum output power of +20 dBm and gain of 20 dB, the recommended maximum input signal level is 0 dBm.Therefore, the ‘Hi-Current’ parameter should be deactivated in the AD9910 Shield menu.NOTE: as most amplifiers generate harmonics, it is advised to connect an LPF Filter to the Amplifier output for harmonic suppression.For example, one from the LPF 7th Order Elliptical series that we offer. 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 https://www.ebay.com/itm/254839685974 (Low-Pass Filter LPF 7th Order Elliptical 1-1000Mhz 3.5 7 14 28 144 433MHz etc.) https://www.ebay.com/itm/255124015393 OLED Display Menus: Remote control of DDS Generator through USB connection from PC using the terminal serial port: List of Serial Port Commands:Starting with version 1.02, the ability to control via the serial port has been added.F – Set Frequency in Hz (100000 – 600000000)P – Set Output Power in dBm (-72 — 0 OR -68 — +4, depending on “DAC current”)E – Enable OutputD – Disable OutputM – Get ModelV – Get Firmware Versionh – Help; – Commands SeparatorExample:F100000;P-2Set Frequency to 100 kHz, and Output Power to -2 dBm.Any number of commands in any order is allowed. Serial Port Settings:Speed – 115200 BoudsData Bits – 8Stop Bits – 1Parity – NoDTR – OFF Windows:An example of setting up a serial port in the Windows console:mode COM3 baud=115200 DTR=OFF Data=8Usage example:echo F100000000 > COM3 Ubuntu 22.04:An example of setting up a serial port in the Ubuntu:sudo usermod -aG dialout $USER_NAME$sudo chmod a+rw /dev/ttyUSB0sudo stty -F /dev/ttyUSB0 115200 cs8 ixoff -hupcl -echoUsage example:echo “F100000000” > /dev/ttyUSB0 example of command prompt with serial commands for AD9910 DDS RF Unit DDS AD9910 Shield for Arduino 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”AM (Amplitude Modulation) Modulation Freq: 1kHz, Depth: 50%-FM (Frequency Modulation) Frequency: 1 kHz Deviation: 3 kHz AM (Amplitude Modulation) Carrier: 1 MHz Frequency: 100 kHz Depth: 50% DDS AD9910 Shield for Arduino Thermal images: AD9910 Board temperature measured with Flir E8 thermal imager at Core Clock @ 1000 MHz AD9910 Board temperature measured with Flir E8 thermal imager at Core Clock @ 1440 MHz DDS AD9910 Shield Board Connection Diagram: DDS AD9910 Shield RF Signal Generator by GRA & AFCH: 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 AD9910 Shield Board Operating Instruction: Operating Instruction for DDS AD9910 v2.0 Shield Board (rev.A) with Connection Diagram (rev.B) DDS AD9910 Shield Board v2.0 Operating Instruction (rev.A) with Connection Diagram (rev.B) [title] DDS AD9910 Shield Board v2.0 Operating Instruction (rev.A) with Connection Diagram (rev.B) [page 1] DDS AD9910 Shield Board v2.0 Operating Instruction (rev.A) with Connection Diagram (rev.B) [page 2] DDS AD9910 Shield Board v2.0 Operating Instruction (rev.A) with Connection Diagram (rev.B) [page 3] DDS AD9910 Shield Board v2.0 Operating Instruction (rev.A) with Connection Diagram (rev.B) [connection diagram] Dear customers!If you have ANY questions, PLEASE ASK usShipping and Return information All Items are shipped from UkraineVia International registered AirmailShipments are made within 1 business dayAfter the payments are received and verifiedIt takes about 4-7 days via UPS Express deliveryIt takes about 10-18 days via Standerd shippingIt takes about 35-45 days via Economy shippingWe combine multiple Items to save on shipping UPS Express Shipping time (recommended):Europe:3-5 daysGermany:3-5 daysUSA, Canada:4-7 daysAsia, South America:5-7 daysAustralia, New Zeland:5-7 daysAfrica, Central America:5-7 days Standard Shipping time:Europe:10-12 daysGermany:10-12 daysUSA, Canada:10-15 daysAsia, South America:10-18 daysAustralia, New Zeland:12-18 daysAfrica, Central America:12-18 days Economy Shipping time:Europe:25-30 daysGermany:25-30 daysUSA, Canada:30-35 daysAsia, South America:35-45 daysAustralia, New Zeland:45-55 daysAfrica, Central America:45-55 days Return PolicyAll Returns are acceptedFor Return you should contact Us within 14 Days after receiving the ItemRefunds are made as Money back or Replacements (buyer’s choice)Return Shaipments are paid by the buyerNo restocking fees are charged Dear customers!If you have ANY questions, PLEASE ASK us

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