Precise frequency synthesis

Dmitry Vasilenko - Arrow

My customer needs to tune frequency in steps around 20.48 MHz +/- 2 kHz with 0.01% accuracy. Right now they are plannng to use AD9851, does TI have any ideas?

over 14 years ago

0 mapefer3 over 14 years ago

TI__Expert 5725 points

The closest we have to the DDS from ADI is the CDCE9xx series, that are programmable via I2C, where you can fine tune programmatically the output frequency.

How many steps around 2kHz, what is the input frequency and output frequency in order to estimate if the 0.01% accuracy can be achieved.

0 Dmitry Vasilenko - Arrow over 14 years ago in reply to mapefer3

Expert 1380 points

Hi, thank you for this idea.

The customer needs to fine tune freqency in the range 4khz around 20.48 Mhz with app. 1000 steps

Clock & timing

Clock & timing forum

Precise frequency synthesis