25 MHz Direct Digital Synthesizer Waveform Generator

The AD9832 is a numerically controlled oscillator employing a phase accumulator, a sine look-up table, and a 10-bit digital-to-analog converter (DAC) integrated on a single CMOS chip. Modulation capabilities are provided for phase modulation and frequency modulation.

Clock rates up to 25 MHz are supported. Frequency accuracy can be controlled to one part in 4 billion. Modulation is effected by loading registers through the serial interface.

A power-down bit allows the user to power down the AD9832 when it is not in use, the power consumption being reduced to 5 mW (5 V) or 3 mW (3 V). The part is available in a 16-lead TSSOP package.

Applications

* Frequency stimulus/waveform generation

* Frequency phase tuning and modulation

* Low power RF/communications systems

* Liquid and gas flow measurement

* Sensory applications: proximity, motion, and defect

detection

* Test and medical equipment

* 25 MHz Speed

* On-Chip SIN Lookup Table

* On-Chip 10-Bit DAC

* Serial Loading

* See data sheet for additional features