Low Power Op-amp

[gez]

Came across this one in this month's Electronics World: Texas OPA369

PDF here:

http://www.ti.com/lit/gpn/opa369

Max 1uA tick-over current, and can operate from voltages down to 1.8V.  Rail-to-rail input and output range.  Ideal candidate for a 3V coin-cell run buffer (would get years of use before the battery needed to be changed), to be incorporated into a guitar.

[zyxwyvu]

FREQUENCY RESPONSE
Gain-Bandwidth Product ... 12 kHz
Slew Rate ... 0.005 V/μs

Unfortunately, with those specs, I'm pretty sure it would distort even at unity gain. Most opamps we use around here have GBWs around 100 times that. Check out the graph of maximum output voltage vs frequency on page 7 of the datasheet. At 1k it's limited to about half a volt.

[gez]

As RG would say, "the devil is in the detail"!