AD9833 DDS Signal Generator Module: Sine/Square Wave, Programmable via Serial Interface for Microprocessors

The AD9833 is a low power programmable waveform generator capable of producing sine, triangle, and square wave outputs. It is suitable for applications such as waveform detection, signal generation, and time domain reflectometry (TDR) that require precise frequency and phase control. The device is software programmable and requires no external components for operation. The frequency register is 28 bits wide with a 25 MHz clock, providing a resolution of 0.1 Hz. When clocked at 1 MHz, the device can achieve a tuning resolution of 0.004 Hz. The AD9833 features a standard serial interface that allows direct connection to various microprocessors and microcontrollers. Data is written to the device using an external serial clock. Key features include digitally programmable frequency and phase control, 12.65 mW power consumption at 3 V, and an output frequency range from 0 MHz to 12.5 MHz with 0.1 Hz resolution. The reference clock supports up to 25 MHz. Output waveforms include sine, triangle, and square waves. The device operates from a 2.3 V to 5.5 V power supply and does not require external components. Communication is performed via a serial interface that supports clock frequencies up to 40 MHz, making it compatible with standard DSPs and microcontrollers. The device includes a power-down function (SLEEP mode) that reduces power consumption by disabling internal circuitry when not in use, such as during output clock generation. Extended operating temperature range: -40°C to +105°C. Typical performance specifications are specified at 25°C. Maximum update rate: 25 MHz. Output voltage range: minimum 38 mV, maximum 0.65 V. Output voltage temperature coefficient: 200 ppm/°C. High-level input voltage range: 1.7 V to 2.8 V. Low-level input voltage range: 0.5 V to 0.7 V. Input capacitance: 3 pF. Material: PCB board + sensor. Color: As shown. Package Contents: 1 x DDS module 1 x pin header Note: Only the items listed above are included in the package.