This part is a kind of semiconductor called AD706.

Function of this product has Dual Picoampere Input Current Bipolar Op Amp.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

a FEATURE HIGH DC PRECISION 50 ␮ V max Offset Voltage 0.6 ␮ V/؇C max Offset Drift 110 pA max Input Bias Current LOW NOISE 0.5 ␮V p-p Voltage Noise, 0.1 Hz to 10 Hz LOW POWER 750 ␮A Supply Current Available in 8-Lead Plastic Mini-DlP, Hermetic Cerdip and Surface Mount (SOIC) Packages Available in Tape and Reel in Accordance with EIA-481A Standard Single Version: AD705, Quad Version: AD704 PRIMARY APPLICATIONS Low Frequency Active Filters Precision Instrumentation Precision Integrators Dual Picoampere Input Current Bipolar Op Amp AD706 CONNECTION DIAGRAM Plastic Mini-DIP (N) Cerdip (Q) and Plastic SOIC (R) Packages AMPLIFIER 1 OUTPUT 1 –IN 2 ؉IN 3 V– 4 AMPLIFIER 2 AD706 8 7 6 5 V؉ OUTPUT –IN ؉IN TOP VIEW The AD706 is offered in three varieties of an 8-lead package: p [ ... ]

AD706 PDF Datasheet Download