I'm currently working on a low power chirp generator.
Someone before me working on this, used the AD9752 (12-Bit).
I would like to replace the DAC for an AD9706 (12-bit), on the output I'd like to use an
differential to single ended buffer. The buffer has an symetrical supply.
The question I have is on this output interface. (see attached file for example)
On the AD9752 the output current is 20mA, so the voltage over R1 and R2 is
20mA x 25 Ohms is 0.5V
On the new situation the AD9706 gives 2mA output. So with the same R1 and R2 the
output voltage is ten times smaller.
How can I compensate for this voltage loss, in such a way that I preserve the signal specifications
of the AD9706?
Can I raise R1 and R2 to 240 Ohms without consequences?
Or is there another way?, and no I cannot use any transformer