DAC chips arrived

The DAC chips LTC1799 have arrived. They will be used to set the center frequency.
Unfortunately my PIC16F877 has been destroyed. I don't know why. Some new ones have been ordered. In the mean time I will use a 16f84 to develop a driver for this chip.

My DAC chips are dual DAC chips. I am considering to use the 2nd DAC for the center frequency control loop. The original plan was use an external integrator in the control loop but I may as well do it in software. New plan: use one 10 bit DAC's to set the center frequency. A lookup table will be used. The actual center frequency will be measured and corrected by a control loop. De 2nd DAC will output the control signal.