OPA192_15 Datasheet, PDF (30/52 Pages) Texas Instruments – OPAx192 36-V, Precision, Rail-to-Rail Input/Output, Low Offset Voltage,Low Input Bias Current Op Amp with e-trim™

OPA192, OPA2192, OPA4192
SBOS620E – DECEMBER 2013 – REVISED NOVEMBER 2015
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An ESD event is very short in duration and very high voltage (for example, 1 kV, 100 ns), whereas an EOS event
is long duration and lower voltage (for example, 50 V, 100 ms). The ESD diodes are designed for out-of-circuit
ESD protection (that is, during assembly, test, and storage of the device before being soldered to the PCB).
During an ESD event, the ESD signal is passed through the ESD steering diodes to an absorption circuit (labeled
ESD power-supply circuit). The ESD absorption circuit clamps the supplies to a safe level.
Although this behavior is necessary for out-of-circuit protection, excessive current and damage is caused if
activated in-circuit. A transient voltage suppressors (TVS) can be used to prevent against damage caused by
turning on the ESD absorption circuit during an in-circuit ESD event. Using the appropriate current limiting
resistors and TVS diodes allows for the use of device ESD diodes to protect against EOS events.
8.3.8 Overload Recovery
Overload recovery is defined as the time required for the op amp output to recover from a saturated state to a
linear state. The output devices of the op amp enter a saturation region when the output voltage exceeds the
rated operating voltage, either due to the high input voltage or the high gain. After the device enters the
saturation region, the charge carriers in the output devices require time to return back to the linear state. After
the charge carriers return back to the linear state, the device begins to slew at the specified slew rate. Thus, the
propagation delay in case of an overload condition is the sum of the overload recovery time and the slew time.
The overload recovery time for the OPAx192 is approximately 200 ns.
8.4 Device Functional Modes
The OPAx192 has a single functional mode and is operational when the power-supply voltage is greater than
4.5 V (±2.25 V). The maximum power supply voltage for the OPAx192 is 36 V (±18 V).
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