I am happy to report both Renesas op-amps made it safe and sound onto a breadboard. Additionally, I am even more thrilled that the 61 MHz bandwidth op-amp doesn’t breakout into oscillation when used in a breadboard.
Both op-amps I received in my op-amp-a-palooza kit are modern surface mount devices. Fortunately, I have a bag of little breakout boards on hand. So, the first step in experimenting with these op-amps was to mount them onto an SMD to DIP breakout board.
(ISL28291 in an SOIC-8 package)
(ISL28213 in an MSOP-8 package)
On the underside of the breakout board, I added a 10 uF 16V MLCC bypass capacitor for my best chance of success using these amplifiers on a breadboard.
I didn't take a photo, but I also added a 30 AWG mod wire from the capacitor to the appropriate power pin.
I then wired up the two op-amps on my breadboard as unity gain buffers. I used my MP750668 function generator as a signal source.
Renesas ISL28213
A nice little general purpose CMOS input op-amp with the following bannerline specifications:
Small signal step response of the op-amp shows minimal overshoot (good phase margin):
Also, the small signal step response shows good agreement with the spice model provided on Renesas’s website.
The large signal step response and slew rate:
Renesas ISL28291
Is a nice little precision, low noise, modestly fast op-amp with the following high level specifications:
Here is the small signal step response (not bad for a circuit on a breadboard):
The spice model of the ISL28291 look reasonable similar to what I measured on a breadboard, I think that is a win!
Summary
Both Renesas op-amps are unity-gain stable:
- In a breadboard
- With a 10x scope probe on the output (~20 pF)
- With a 1x scope probe on the output (~120 pF)
- Modest feedback resistance of 100 kOhms
The noise seen in the scope shots are the results of a rats nest of hookup wires and probes and not the op-amps themselves.
The ISL28291 is a fast op-amp, but not too fast for its own good 
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