Data SheetOP284CHIPSOUTLINE DIMENSIONS DIE PAD DESCRIPTIONS Die center is the reference location at 0.0 μm × 0.0 μm. Pad coordinates are to the center of each pad. Waffle pack orientation is the chamfer corner to the OUTA pad. Table 4. Pad Mnemonics, Function Descriptions, and CoordinatesMnemonic DescriptionPadCoordinates(μm) OUTA Output of Channel A. −660 × +780 −INA Negative Input Channel A. −608 × +149 +INA Positive Input Channel A. −608 × −107 V− Pad Negative Power Supply. Substrate is connected to V−.