Programmable Microprocessors Sine Square Wave DDS Signal Generator Module
Description
The AD9833 is a low power, programmable waveform generator capable of producing sine, triangular, and square wave outputs.
Waveform generation is required in various types of sensing, actuation, and time domain reflectometry (TDR) applications.
The frequency registers are 28 bits wide: with a 25 MHz clock rate, resolution of 0.1 Hz can be achieved; with a 1 MHz clock rate, the AD9833 can be tuned to 0.004 Hz
resolution The AD9833 has a standard serial interface that allows the part to interface directly with several microprocessors.
The device uses an external serial clock to write the data or control information into the device The AD9833 is written to via a 3-wire serial interface.
This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards.
The device operates with a power supply from 2.3 V to 5.5 V The AD9833 has a power-down function (SLEEP).
This allows sections of the device that are not being used to be powered down, thus minimizing the current consumption of the part.
Features
Digitally programmable frequency and phase 12.65 mW power consumption at 3 V 0 MHz to 12.5 MHz output frequency range 28-bit resolution: 0.1 Hz at 25 MHz reference clock Sinusoidal, triangular, and square wave outputs 2.3 V to 5.5 V power supply
No external components required 3-wire SPI interface Power-down option
Update Rate: 25(max)
VOUT Maximum: 0.65V
VOUT Minimum: 38mV
VOUT Temperature Coefficient: 200
Input High Voltage： 1.7-2.8
Input Low Voltage: 0.5-0.7V
Input Current: 10µA
Input Capacitance: 3pF
Operating temperature range is −40°C to +105°C; typical specifications are at 25°C
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