Hi,
I am considering using a high output drive current OP AMP as a voltage follower. I found that AD8055 meets the current requirement but in its datasheet, there's no unity-gain stable mentioned.
I wondering if AMP without unity-gain stable could be used as a voltage follower.
Thanks in advance.
Hi ANALOGR ,
Good day. Considering the open loop gain response and the phase margin of the op-amp, we can say that the op-amp is stable at a gain of 1 since it has a positive phase margin (this was based on stability criteria).
Although the close loop gain response shows a little peaking for frequency above 40 MHz which could only affect the linearity of the output, the part is ensured to have gain flatness 0.1 dB to 40 MHz
Hope this helps.
Regards,
Gilbeys
Hi ANALOGR ,
Good day. Considering the open loop gain response and the phase margin of the op-amp, we can say that the op-amp is stable at a gain of 1 since it has a positive phase margin (this was based on stability criteria).
Although the close loop gain response shows a little peaking for frequency above 40 MHz which could only affect the linearity of the output, the part is ensured to have gain flatness 0.1 dB to 40 MHz
Hope this helps.
Regards,
Gilbeys
