Signal Generator Module AD9854 High Speed DDS Module Signal Source Sine Wave Square Wave Signal Generator
US $44.14 -20%
The AD9854 DDS module has four complementary sine wave outputs, two plus 120 MHz official low-pass filters and one square wave output. The square wave can be adjusted by sliding rheostat to facilitate use.
AD9854 module shipping list
Module model: AD9854
Module type: digital synthesis frequency source
Module power supply: DC7-9V
Module current: 650mA (MAX); quiescent current 90mA (TYP) normal drive current 620mA (TYP)
Module communication protocol: SPI parallel
Module provides routines: STM32F103RCT6
Routine platform: STM32F103X-M3 KEIL5 version source code
Module system main frequency: 300MHz (MAX)
DAC resolution digits: 12
Phase accumulator digits: 48 bits
Module output interface: SMA; 24-hour salt spray anti-oxidation
Module output signals: sine wave, square wave; sine wave with 120MHz low-pass filter. Square wave coupling output.
Module output channel: 5 channels; the phase difference between each pair is 90 degrees, the output of 1,4 channels has filters, and 2,3 channels have no filters. The square wave has a separate output.
The signal characteristics of the module: the sine wave square wave has no coupling output; the output has its own DC component. If it is connected to the radio frequency equipment, please add a DC blocker, or you can directly measure it with an oscilloscope. Square wave duty cycle adjustable range 5%-95%
Highest main frequency output sine wave signal range: 1Hz-120MHz
Maximum square frequency output square wave signal range: 1Hz-50MHz; oscilloscope input impedance above 50MHz requires 50 ohms
Output amplitude: sine wave 540mVpp (MAX) square wave 3.3Vpp; sine wave amplitude decreases with increasing frequency, square wave waveform changes with increasing frequency
Output impedance: 50 ohms
Module features: multiple; support external FSK signal input, high-performance DDS sine wave signal generator, high-order elliptic filter, low-noise voltage regulator chip, etc.
Module application: multiple; frequency signal generation, sine wave, square wave signal generation, sensor excitation
Module weight: 55g
Module specifications: 85*65*12; length * width * height-PCB size
Module interface type: SMA signal output and external clock input, DC5.5 power socket, XH2.54-26PIN double-row pin data interface
The AD9854 digital frequency synthesizer is a highly integrated device that uses advanced DDS technology and built-in two high-speed, high-performance quadrature DACs to form a digitally programmable 1 and Q frequency synthesizer. Using a precision clock source as a reference, the AD9854 can produce highly stable frequency phase, amplitude programmable sine and cosine outputs, and can be used as an agile L0 in communications, radar and many other applications. The innovative high-speed DDS core provides 48-bit frequency resolution (with 300 MHz SYSCLK, the tuning resolution is 1 μHz) Maintaining 17 bits ensures that the device has excellent spurious-free dynamic range (SFDR).
Precautions for using the module
(1) The current consumption of the module is large, and the power supply needs to have a certain margin. It is recommended to use a power supply above 7V1A.
(2) Since the module is a high-precision device, in order to avoid unnecessary interference, it is recommended to use a linear power supply.
Frequently asked questions
Q: Can the main frequency and output amplitude of the module be adjusted?
A: The main frequency of the module is determined by the input clock and the program. The module can input the clock externally. The onboard default clock is 20MHz, and the program control frequency is 15 times, that is, the default frequency is 300MHz. The main frequency can be changed by modifying the input clock and frequency multiplier, and the output amplitude can be controlled by modifying the 12-bit amplitude register. You need to modify the program yourself.
Q: Can the module achieve frequency sweep? Can AM and FSK signals be generated?
A: The module can realize frequency sweep, the code provided by our store can support frequency sweep. The module can generate a simple AM signal, which needs to be programmed by itself; after generating the FSK signal, you need to configure the register, and then input the high and low levels from the FSK port of the module to generate the FSK signal
Q: Why is the waveform between channels not orthogonal when the frequency increases?
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1. You have 7 days to contact us and you will not be able to return from the receipt date after30 days. If the item has been owned by you for more than 7 days, it will be considered usedand we will not refund or replace it. with no exceptions! Return shipping costs are theresponsibility of the buver.
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selller send it out within 4 days but it took almost 4 month to be delivered
Consistent with the description. Recommend.