what the symbols that be in the flex datasheets?

Forum 2005-2010 (read only) Hardware Interfacing
1

hi! everyone!
I can't recognize the symbols about the figure of triangle. (near by impedance buffer)
LINK: http://www.sparkfun.com/datasheets/Sensors/Flex/FlexSensor.pdf

Is that a diode or something else?
Can someone give me a answer? I do appreciate that.
:slight_smile:

2

It's an operational amplifier (op-amp)

3

I really thanks to you!