The OPA695 has two functional modes: enabled and disabled. While operating on a bipolar supply of V_S = ±5V the first functional mode is accessed by applying a logic 1 (> 3.5 V) to the (DIS) pin. In this mode, the amplifier is fully enabled and draws a supply current of 14mA.

The second functional mode is the disabled state. The disabled state is accessed by applying a logic 0 (< 1.7V) to the DIS pin. In this mode, the amplifier is fully disabled and draws a current of only 160µA. When disabled, the output and input nodes go to a high-impedance state. When the OPA695 operates in a gain of +1V/V, a very high impedance at the output and exceptional signal isolation occur. When operating at a gain greater than +1V/V, the total feedback network resistance appears as an impedance at the output, but the circuit still shows very high forward and reverse isolation. If configured as an inverting amplifier, the input and output are connected through the feedback network resistance, giving relatively poor input-to-output isolation.