This part is a kind of semiconductor called M5218AL.

Function of this product has DUAL LOW-NOISE OPERATIONAL AMPLIFIERS(DUAL POWER SUPPLY TYPE).

Manufacturers : Mitsubishi

Image and pinout :

Some of the text within the PDF file :

8P2S-A EIAJ Package Code SOP8-P-225-1.27 JEDEC Code – Weight(g) 0.07 Lead Material Cu Alloy Plastic 8pin 225mil SOP e b2 8 5 HE E e1 Recommended Mount Pad F A D A2 b e y L1 L A1 Dimension in Millimeters Min Nom Max – – 1.9 0.05 – – – 1.5 – 0.35 0.4 0.5 0.13 0.15 0.2 4.8 5.0 5.2 4.2 4.4 4.6 – 1.27 – 5.9 6.2 6.5 0.2 0.4 0.6 – 0.9 – – – 0.1 0° – 10° – 0.76 – – 5.72 – 1.27 – – 1 4 Symbol A A1 A2 b c D E e HE L L1 y b2 e1 I2 c Detail F I2 Mar.’98 [ ... ]

M5218AL PDF Datasheet Download