Description :
The AD9954 DDS Signal Generator is a high-performance Direct Digital Frequency Synthesizer (DDS) designed for precise and stable signal generation. It integrates a high-speed DAC and advanced digital synthesis technology to deliver accurate and programmable high-frequency sine wave outputs up to 150MHz.
This module supports fast frequency hopping and ultra-fine frequency tuning with resolution as low as 0.01Hz, along with precise phase adjustment in 0.022° increments, making it ideal for advanced RF and signal processing applications.
The device can be easily programmed via a high-speed serial I/O interface, allowing flexible control and customization. It also features built-in static RAM for multiple frequency sweep modes, including user-defined linear scanning.
Additionally, the integrated high-speed comparator enables square wave output, while the on-chip oscillator and PLL circuitry provide flexible system clock configuration options.
Specifications :
| Parameter | Details |
|---|---|
| Module Model | AD9954 |
| Module Type | Digital Synthesis Frequency Source (DDS) |
| Power Supply | DC 5V |
| Current Consumption | Max: 100mAIdle: 48mA (Typ)Normal: 92mA (Typ) |
| Communication Protocol | SPI Serial |
| Supported MCU / Routines | STM32F103RCT6 |
| Development Platform | STM32F103X-M3 (KEIL5 Source Code) |
| System Clock Frequency | Up to 400MHz |
| DAC Resolution | 14-bit |
| Phase Accumulator | 32-bit |
| Output Interface | SMA Connector (24-hour salt spray anti-oxidation) |
| Output Impedance | 75 Ohms |
Features :
1. Multi-Signal Output: Supports both sine wave and square wave output
2. Built-in Low-Pass Filter: 150MHz filter for cleaner sine wave signals
3. Dual Channel Differential Output: 2-channel output with 180° phase difference
4. High-Frequency Note: Phase shift may occur at high frequency due to filtering
5. Wide Frequency Range:
- Sine Wave: 1Hz – 140MHz
- Square Wave: 1Hz – 120MHz
6. Output Amplitude:
- Sine Wave: Up to 200mVpp
- Square Wave: Up to 3.3Vpp
7. Frequency Behavior:
- Sine amplitude decreases at higher frequencies
- Square waveform shape changes at higher frequencies
8. DC Component Present: Output includes DC offset (use DC block for RF equipment)
9. Measurement Support: Direct oscilloscope measurement supported (50Ω input recommended for >10MHz)
10. High-Performance Design:
- DDS-based sine signal generation
- High-order elliptical filter
- Low-noise regulator for stable output
Package Included :
1 X AD9954 DDS Signal Generator 400MHz High Frequency Signal Source Development Board for Test & Measurement Applications
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