AD9833 is a low power 20mW 2.3V to 5.5V programmable waveform generator.
The AD9833 from Analog Devices is a low‑power DDS chip that generates sine, triangular, and square waveforms. It operates from a 2.3 V‑5.5 V supply, consumes only 20 mW at 3 V, and requires no external components. Frequency and phase are programmed via a 3‑wire SPI‑compatible serial interface.
Key features include a 28‑bit phase accumulator, 10‑bit DAC, 0 MHz‑12.5 MHz output frequency range, and selectable power‑down mode. The device is supplied in a 10‑lead MSOP package and is suitable for sensing, actuation, and time‑domain reflectometry applications.
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
|---|---|
| Power Consumption | 20 mW at 3 V |
| Output Frequency Range | 0 MHz to 12.5 MHz |
| Phase Accumulator Resolution | 28 bits |
| DAC Resolution | 10 bits |
| Signal‑to‑Noise Ratio (SNR) | 55‑60 dB |
| Wideband SFDR | –60 dBc |
| Narrow‑band SFDR | –78 dBc |
| Typical Supply Current (IDD) | 4.5‑5.5 mA |
| Sleep Mode Current | 0.5 mA |
The AD9833 operates from a supply voltage of 2.3 V to 5.5 V.
It uses a 3‑wire SPI‑compatible serial interface.
Typical power consumption is 20 mW when powered at 3 V.