Pin VGG function description on page 6 of the datasheet reads in part: "For VIN ± 4.75V, the internal VGG generator can be used. For VIN > 4.75 V, this pin should be driven from an external bias supply." I believe that this is supposed to say "For VIN > 4.75V, the internal VGG generator can be used. For VIN < 4.75 V, this pin should be driven from an external bias supply."