AD9834/AD9837/AD9838 Low Power DSS

ADI's AD9834/AD9837/AD9838 are low power direct digital synthesis (DSS) devices. The AD9834 and AD9837 produce high-performance sine and triangular outputs. The AD9834 consumes 20 mW of power at 3 V. The AD9838 produces 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.

These devices operate with a power supply from 2.3 V to 5.5 V. The analog and digital sections are independent and can be run from different power supplies; for example, AV_DD can equal 5 V with DV_DD equal to 3 V. The AD9834, AD9837, and AD9838 have a power-down pin (SLEEP) that allows external control of the power-down mode. Sections of the device that are not being used can be powered down to minimize the current consumption. For example, the DAC can be powered down when a clock output is being generated. The AD9834, AD9837, and AD9838 are ideal solutions for power-sensitive applications.