My customers are considering AD8028.
What is the output voltage swing when using the AD8028 under the following conditions?
<Condition>Vs = 5VRL = 100 Ω
Since the result of RL = 1kΩ for the data sheet was not obtained,I want to know…
In power down mode, what is the state of the output?
I want to know when I put the select pin to 0V, the output will be in tristate or 0V?
1 - Stability :
After a stabilty analysis of AD8028 in follower mode, with no load, it appears that AD8028 is stable (phase margin >46°) if the feedback resistor is close to 0 ohms (<100ohms).
In my design, I first wished a feedback resistor…
Same question for AD8028 while current of 9.5mA maximum flowes from the input through the protection diode. Thank's
Thank you for reply and suggestion.
The ADA4897-2 is already evaluated but there was signal leakage from input to output when power-down was enabled. So AD8028 might be good.
The AD8028 is our widest BW true RRIO dual op amp we have today. If you could provide a little more supply voltage the ADA4891-4 might be of interest to you.
It is always nice to be able to answer one's own questions, since it usually means, that the effort to find out has been succesful.I tried to build the circuit mentioned in this publication:
In the configuration using in amp and digipot, the digipot will introduce low pass filter due its resistor and switches parasitic capacitance. It will low pass the signal before it goes through the in amp output. The larger the end to end…
Really your best bet is changing amplifiers to something like the AD8397 (less gain-bandwidth product) or AD8030 (closer) or even the AD8022 that at lease works at 4.5V. The AD8066 will probably work at 4.5 but you will have no guarantee of that. If this…