memory of the AD9833 AD9834


can someone confirm that both the AD9833 and AD9834 require reprogramming whenever they are turned off? which the recommendation to avoid this?

  • Hi mattoso,

    These devices does not include EEPROM or Flash, and the content of the registers will be lost if the supply is disconnected.



  • If you loose the power you have to re-program. To avoid this you must ensure that power is not interrupted after device is programmed. If you're looking for a device which you can program and it stays programmed (like some clock generators) you need to look elsewhere. For such application (and still using the AD9833/34) the best answer is to include a small microcontroller to perform the programming function every time power is applied.