The AD9834 is a 75 MHz 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.
The AD9834 is a low‑power 75 MHz Direct Digital Synthesis (DDS) device that provides high‑performance sine and triangular wave outputs, with an on‑board comparator for square‑wave generation. It operates from a 2.3 V to 5.5 V supply and consumes only 20 mW at 3 V, making it suitable for power‑sensitive applications.
Key features include a 10‑bit DAC with a 75 MSPS update rate, narrow‑band SFDR greater than 72 dB, output frequency up to 37.5 MHz, and a 3‑wire SPI interface. The device is offered in a 20‑lead TSSOP package and includes power‑down control, temperature range from –40 °C to +105 °C, and extensive timing specifications.
| Power supply voltage | 2.3 V to 5.5 V |
|---|---|
| Output frequency range | up to 37.5 MHz |
| Power consumption at 3 V | 20 mW |
| DAC resolution | 10 Bits |
| DAC update rate | 75 MSPS |
| Narrow‑band SFDR | >72 dB |
| Clock feedthrough | –50 dBc |
| Operating temperature range | –40 °C to +105 °C |
| Package | 20‑lead TSSOP |
The AD9834 operates from a supply voltage of 2.3 V to 5.5 V.
It consumes 20 mW when powered at 3 V.
The device can generate frequencies up to 37.5 MHz.
The DAC provides a 10‑bit resolution.