For proper operation, the power supplies must be properly decoupled. For decoupling the supply lines, TI recommends that 10-nF capacitors be placed as close as possible to the op amp power supply pins. For single-supply, place a capacitor between V⁺ and V⁻ supply leads. For dual supplies, place one capacitor between V⁺ and ground, and one capacitor between V^– and ground.