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DDS AD9912 Board TCXO for Arduino Mega 1GSPS, SINE, CMOS, HSTL, SWEEP Low Noise Oscillator
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DDS (Direct Digital Synthesis) Analog Devices AD9912 Arduino Shield by GRA & AFCHEasy connection to Arduino MEGA 2560 without additional wires and converters
All functions of the DDS AD9912 are brought to the contacts of the Arduino MEGA With this you can fully reveal all the capabilities of the DDS AD9912 Shield
Short description
Easy to connect OLED display
One encoder for control via the program menu
The synthesizer is capable to generate sine wave, CMOS and HSTL signals
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 Board support overclocking of the AD9912 core up to 1.3 GHz (heatsink is recommended)
DDS AD9912 Shield has ability to generate a signal of up to 600 MHz with a core overclocking up to 1.3 GHz (to suppress harmonics it is recommended to overclock the AD9912 for frequencies above 400 MHz)
Key Benefits:
Low harmonics no more than -60dBc. An output RF transformer is used for the correct operation of the current mirror
The AD9912 built-in 50 Ohm resistors achieve better noise and harmonic results than the AD9910 Small spurs 4 layer Board. Signal lines – TOP and Bottom, Inner layers – Ground and Power Low Noise LDO Stabilizers
Separate power supply for all analog and digital lines (1.8V and 3.3V), 7 pcs IC voltage stabilizers are used. Additionally there is an RF Ferrite boad interchange High speed decoupling Level converter and TTL 5V matching
Additional balancing transformer used for TCXO and EGEN options
Standard Mode: up to 400 MHz sine wave output, 1 GSPS internal or external clock speed
Overclocking Mode: up to 600 MHz sine wave output, up to 1.3 GSPS internal or external clock speed
Differential HSTL Output up to 1 GHz
CMOS Output to up to 200 MHz
Output Filter LPF 9-order
Spur Killer* 2 channels to suppress spurs in the frequency spectrum* (not yet implemented)
Integrated 14 bit DAC 48 bit frequency tuning word with 4 μHz resolution 0.000004Hz (optional)
Specifications:
Frequency: 100 kHz – 450 MHz (600 MHz*) 1 Hz step
Spurs max: -60 dBc
Frequency step: 1 Hz
Output power: +4 dBm to -7 dBm (on 50 Ohm load)
Output level up to: 1 Vpeak-to-peak (at +4 dBm)
Power Supply: USB or External Power Supply 7.5V DC 1A
Output filter (LPF): 9th order (Cut 600 MHz)
CMOS Output up to 200 MHz, Level 1.8/3.3V
HSTL Output up to 750 MHz (1000 MHz*)
Reference clock sources (optional): XO-Crystal Oscillator, TCXO 1ppm, External Oscillator up to 1.3 GHz
PCB Size: 53.26 x 102 mm
* when overclocking the core to 1.3 GHz