Dear TE,
As per LMP7707 datasheet says, "These decompensated amplifiers are stable at a gain of 6 and higher" , I have used this op amp as a unit gain amplifier, will there be any issue in the functioning or design,
Please suggest any recommendations if it needs any design change.
thanks,
Vishwanath G
Decompensated op amp like LMP7707 will be unstable (will oscillate) in low gains. If you look below at the phase margin for Gain=1 (0dB), it is a negative 45 degrees and thus the circuit will oscillate. Increasing the Gain>=6 (15.5dB) results in a minimum phase margin of 50 degrees (stable operation). This is the reason why the LMP7707 minimum required gain is 6.
Yes, the LMP7707 is not very happy at gain of 1, this is a simple follower setup, but there are external ways to handle this.
But, to go further would need your exact starting circuit in a TINA file,
Here is this starting point,
