OPA376-Q1_16 Datasheet, PDF (16/34 Pages) Texas Instruments – Low-Noise, Low Quiescent Current, Precision Operational Amplifier

OPA376-Q1, OPA2376-Q1, OPA4376-Q1
SBOS549A – APRIL 2011 – REVISED JANUARY 2016
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Feature Description (continued)
7.3.5 Input and ESD Protection
The OPAx376-Q1 family incorporates 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, as
long as the current is limited to 10 mA as stated in the Absolute Maximum Ratings. Figure 24 shows how a
series input resistor may be added to the driven input to limit the input current. The added resistor contributes
thermal noise at the amplifier input and its value should be kept to a minimum in noise-sensitive applications.
I_OVERLOAD
10mA max
V_IN
5kW
V+
OPA376
V_OUT
Figure 24. Input Current Protection
7.4 Device Functional Modes
The OPAx376-Q1 has a single functional mode and is operational when the power-supply voltage is greater than
2.2 V (±1.1 V). The maximum power supply voltage for the OPAx376-Q1 is 5.5 V (±2.75 V).
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