Thus, the maximum gain error specification in the Electrical Characteristics table is relaxed beyond 6σ guard

band to be ±0.05%.

7.3.5 Electrical Overstress

Designers often ask questions about the capability of an operational amplifier to withstand electrical overstress.

These questions tend to focus on the device inputs, but can involve the supply voltage pins or even the output

pin. Each of these different pin functions have electrical stress limits determined by the voltage breakdown

characteristics of the particular semiconductor fabrication process and specific circuits connected to the pin.

Additionally, internal electrostatic discharge (ESD) protection is built into these circuits to protect them from

accidental ESD events both before and during product assembly.

Having a good understanding of this basic ESD circuitry and the relevance to an electrical overstress event

is helpful. Figure 7-5 shows the ESD circuits contained in the INA600 devices. On the input pins, the ESD

protection circuitry involves local high impedance diode structures and do not route the ESD current to power

supply ESD cell. On the output pin, there are reverse biased diodes to both the power supply rails. These diode

structures route the ESD current back to the internal power supply lines, where there is an absorption power

supply ESD cell internal to the difference amplifier. On the reference pin, the ESD protection is local and does

not route current to the power supply ESD cell.

All of the ESD protection circuitry is intended to remain inactive during normal circuit operation.

+

–

V+

V–

+IN

– IN

OUT

Power Supply

ESD Cell

REF

Figure 7-5. Equivalent Internal ESD Circuitry

7.4 Device Functional Modes

The INA600 has only one functional mode. The device powers on, starts drawing quiescent current and is

functional as long as the power supply voltages are in the recommended operating voltage range of 2.7V

(±1.35V) to 40V (±20V). Operational temperature range of INA600 is from –40°C to 125°C.

INA600

SBOSAM3A – JULY 2025 – REVISED AUGUST 2025

www.ti.com

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