The OPA928 uses back-to-back, or antiparallel, input protection diodes to limit the input differential voltage and protect the device against transient currents. In most circuit applications, the input protection circuitry, illustrated in Section 6.2, has no consequence. However, the antiparallel diodes can be forward biased by fast transient step responses as the amplifier cannot respond fast enough to the input signal. The aforementioned condition can cause relatively large amounts of current to flow through the inputs. Buffer configurations can be susceptible to this behavior in particular. If the input signal current is not inherently limited, an input series or feedback resistor can be used to limit the input current to below the absolute maximum. This additional resistor can degrade the low-noise performance of the OPA928.