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GENERAL DESCRIPTION

The AD9838 is a low power DDS device capable of producing high performance sine and triangular outputs. It also has an on-board comparator that allows a square wave to be produced for clock generation. Consuming only 11 mW of power at 2.3 V, the AD9838 is an ideal candidate for power-sensitive applications.

FEATURES

2.3 V to 5.5 V power supply

MCLK speed: 16 MHz (B grade), 5 MHz (A grade)

Output frequency up to 8 MHz

Sinusoidal and triangular outputs

On-board comparator

3-wire SPI interface

Extended temperature range: ?40°C to +125°C

Power-down option

11 mW power consumption at 2.3 V

20-lead LFCSP

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