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5 kW

10-mA maximum

V+

OUT

OVERLOAD

Device

V +

V±

+IN

± IN

OUT

Power Supply

ESD Cell

TLV9051, TLV9052, TLV9054

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SBOS942F – AUGUST 2018 – REVISED JUNE 2019

Product Folder Links: TLV9051 TLV9052 TLV9054

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Feature Description (continued)

Figure 39. Equivalent Internal ESD Circuitry

8.3.6 Input Protection

The TLV905x family incorporates internal ESD protection circuits on all pins. For input and output pins, this

protection primarily consists of current-steering diodes connected between the input and power-supply pins.

These ESD protection diodes provide in-circuit, input overdrive protection, as long as the current is limited to 10

mA, as shown in the Absolute Maximum Ratings table. Figure 40 shows how a series input resistor can be

added to the driven input to limit the input current. The added resistor contributes thermal noise at the amplifier

input and the value must be kept to a minimum in noise-sensitive applications.

Figure 40. Input Current Protection

8.3.7 Shutdown Function

The TLV905xS devices feature SHDN pins that disable the op amp, placing it into a low-power standby mode. In

this mode, the op amp typically consumes less than 1 µA. The SHDN pins are active low, meaning that

shutdown mode is enabled when the input to the SHDN pin is a valid logic low.

The SHDN pins are referenced to the negative supply voltage of the op amp. The threshold of the shutdown

feature lies around 800 mV (typical) and does not change with respect to the supply voltage. Hysteresis has

been included in the switching threshold to ensure smooth switching characteristics. To ensure optimal shutdown

behavior, the SHDN pins should be driven with valid logic signals. A valid logic low is defined as a voltage

between V– and V– + 0.4 V. A valid logic high is defined as a voltage between V– + 1.2 V and V+. The shutdown

pin must either be connected to a valid high or a low voltage or driven, and not left as an open circuit.

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