Andrea
Banned - aka HeavySoul - aka inconnu - aka Albert - aka layman - aka joe_average - aka altglos - aka Mr boobi - aka mikesand - aka blindbuy - aka The Well - aka yummy-fi
- Joined
- Dec 5, 2004
- Posts
- 4,891
- Likes
- 12
Hello,
I'm debating whether to use an AD8620 or an AD823 as the output buffer of my Zero Audiocraft amplifier. The op-amp will be configured as a unity gain follower (output connected to inverting input), placed in the feedback loop of the controlling op-amp (another AD823).
My doubt is, will the AD8620 in particular be stable in that condition - and with no series resistor on the output, to lower the output impedance? Or had I better add 47 ohm output resistors, and/or resort to the AD823 which has lower unity gain bandwidth (so perhaps has more chances to be stable) ?
Thanks for any hints
I'm debating whether to use an AD8620 or an AD823 as the output buffer of my Zero Audiocraft amplifier. The op-amp will be configured as a unity gain follower (output connected to inverting input), placed in the feedback loop of the controlling op-amp (another AD823).
My doubt is, will the AD8620 in particular be stable in that condition - and with no series resistor on the output, to lower the output impedance? Or had I better add 47 ohm output resistors, and/or resort to the AD823 which has lower unity gain bandwidth (so perhaps has more chances to be stable) ?
Thanks for any hints