Price reduction TI (formerly BB) OPA637AP "Selected Version" 2 pieces, 2-circuit DIP included, new

TI (formerly BB) OPA637AP "Selected Version" x 2, 2-circuit DIP included, new and unused.

This is a higher-grade operational amplifier than the high-precision, high-speed Difet® operational amplifier OPA627AP. The difference in the notation from the usual is that it is a selected OPA637AP.

I found some while organizing, so I'm putting them up for sale. The set is my favorite.

The items to be shipped are 2 operational amplifiers (unused, not set) + 1 2-circuit DIP with gold-plated legs and a 1μF capacitor.

The different printing means it's not a fake "copy." Old enthusiasts might know this. It's from the time when Sofmap in Akihabara was a "used record & equipment store."

This is a set sale of 2 operational amplifiers and a conversion DIP. The items to be shipped are new and unused. They are being sold as a set for small equipment.

Since they are not set, you can use them without any problems in normal equipment with left and right 1 circuit.

The 2-circuit DIP is, as the name suggests, attached for use with the terminals of a 2-circuit OPAMP.

Personally, I use them in the small equipment in the photo.

Please replace the operational amplifier at your own risk. We cannot accept claims regarding compatibility, so please investigate compatibility yourself.

Also, you can find it by searching the internet, but it is prone to "oscillation" (the temperature rises quite a bit). I have it in a mini-amp, but I use it with a heat sink added to the top panel. The included 2-circuit DIP with capacitor is "not an oscillation prevention specification." I use this, but if you are concerned about the possibility of the temperature rising, please refrain from bidding. Or, please investigate it once before bidding.

High-precision, high-speed, Difet® operational amplifier TI (formerly BB) OPA637AP. I remember it being a higher-grade version of the OPA627AP. I personally love it. I rarely see it these days, but it's the real deal. I often hear about fake OPA627APs, but... is the OPA637AP for enthusiasts?

From HP:

A single (1-circuit) operational amplifier that is faster than the OPA627 in non-unity gain. Popular as an operational amplifier for high-end audio amplifiers and headphone amplifiers.

● Power supply voltage: ±4.5 to ±15
● Low noise: 4.5nV/√Hz
● Bandwidth: 80MHz
● Slew rate: 135V/us
● THD+N: 0.00003%
● Input offset voltage: 500uV
● Package: DIP 8-pin