This part is a kind of semiconductor called AN6551.

Function of this product has Dual Operational Amplifier.

Manufacturers : Panasonic Semiconductor

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AN6551 Dual Operational Amplifier s Overview The AN6551 is a dual operational Amplifier with a phase compensation circuit built-in. It is suitable for application to various electronic circuits such as active filters and audio pre-amplifiers. 2.4±0.25 3.3±0.25 6.0±0.3 9 8 0.5±0.1 7 1.5±0.25 Unit:mm s Features • Phase compensation circuit • High gain, low noise • Output short-circuit protection • Two circuits symmetrically arranged in 9-pin SIL plastic package 23.3±0.3 6 5 4 1.5±0.25 0.3 – 0.05 + 0.1 2 1 3.0±0.3 s Pin Descriptions Pin No. 2 3 4 5 6 7 8 1, 9 Pin name Ch.1 output Ch.1 inverting input Ch.1 non inverting input VEE (GND) Ch.2 non inverting input Ch.2 inverting input Ch.2 output VCC 9-pin SIL Plastic Package (SIP009-P-0000C) s Block Diagram VCC VCC 1 R3 [ ... ]

AN6551 PDF Datasheet Download