Other Parts Discussed in Thread: DAC81408, DAC71408
Hello,
I need to generate several analog output signals with voltage range -0.5V/+28V. DAC8218 seems the only available option, but what is written at page 39 of the datasheet about offset DAC usage is not clear to me.
Could the following setup work?
- Bipolar operation (but with ASYMMETRIC supplies)
- AVdd = 30V (< +38V)
- AVss = -3V (> -19V) or larger, if required (e.g. -5V)
- AVdd-AVss = 33V (< +38V)
- Gain = 6 (table 5 at page 39)
- Offset DAC voltage = 2V, so that output range becomes -2V/+28V (anyway, I need only -0.5V)
I don't want to use unipolar mode with 0V-30V range because I really need to reach 0V with several mA sink current (-0.5V is a plus, but not strictly required).
Thanks for any help
LR