SBOS957D February 2022 – December 2023 OPA2328 , OPA328
PRODMIX
Refer to the PDF data sheet for device specific package drawings
The OPAx328 incorporate internal electrostatic discharge (ESD) protection circuits on all pins. In the case of input and output pins, this protection primarily consists of current-steering diodes connected between the input and power-supply pins. These ESD protection diodes also provide in-circuit input overdrive protection if the current is limited to 10 mA. Many input signals are inherently current-limited to less than 10 mA; therefore, a limiting resistor is not required. Figure 6-1 shows how a series input resistor (RIN) can be added to the driven input to limit the input current. The added resistor contributes thermal noise at the amplifier input; therefore, keep this value to a minimum in noise-sensitive applications.