I plan to use LTC2641-12 DAC in some application and I simulate the analog part with LtSpice. For the DAC, I used a pulsed voltage source with this parameters:
PULSE(0 50m 10u 1n 1n 16u 32u)
Obviously, the rise/fall times cannot be 1nS but just to see the response. On output wave I can see some spikes due to very high given rise/fall.
Now the question is what will be the real (worst case) DAC rise/fall based on specifications:
Slew rate: 15V/uS Settling time: 1uS DAC Glitch Impulse: 0.5nV/S <-- what is this ? Digital Feedthrough: 0.2 nV/S <-- and this ?
My DAC will output up to 4.096, so according SR, will "jump" from 0 to 4.096V in 15/4.096 = 3.66 uS
This is the rise/fall time? What will be the worst case scenario?
Thanks for clarifications.