I'd like to use this DAC as a straight ahead DAC. I've not used a dac of this type before so I'm looking to see if it will fit our application.
First, I assume that we can turn all the filters off, and that we'll need to.
Stuff I didn't see on the data sheet but need to know:
1) What is the settling error at 3.3 and 6.7ns? I see it's 0.1% at 10ns.
2) How tightly are the 4 outputs matched? Is there any way to gain (or offset) match them?
3) We would want to be able to drive the output as a square wave at lower frequencies. Any problems with that usage?
4) We'd terminate the output with a 50 ohm resistor and drive that output into a high speed op-amp with a 10x gain. Any concerns with that?
5) Output compliance is listed a -0.5 to +0.6 V. With a 20mA output into 50 ohms, that means a 1V swing. It seems that this device is intended for use with a transformer. If we were to drive our op-amp in a single-ended fashion, we could only get 0.5V out of one output, yes?
Thanks!
Wally