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INA193, INA194, INA195

INA196, INA197, INA198

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SBOS307G – MAY 2004 – REVISED JANUARY 2015

Product Folder Links: INA193 INA194 INA195 INA196 INA197 INA198

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Copyright © 2004–2015, Texas Instruments Incorporated

Device Functional Modes (continued)

8.4.4 Transient Protection

The

−16-V to +80-V common-mode range of the INA193-INA198 devices is ideal for withstanding automotive

fault conditions ranging from 12-V battery reversal up to 80-V transients, since no additional protective

components are needed up to those levels. In the event that the INA193-INA198 devices are exposed to

transients on the inputs in excess of its ratings, then external transient absorption with semiconductor transient

absorbers (zeners or Transzorbs) will be necessary. Use of MOVs or VDRs is not recommended except when

they are used in addition to a semiconductor transient absorber. Select the transient absorber such that it will

never allow the INA193-INA198 devices to be exposed to transients greater than +80 V (that is, allow for

transient absorber tolerance, as well as additional voltage due to transient absorber dynamic impedance).

Despite the use of internal zener-type ESD protection, the INA193-INA198 devices do not lend themselves to

using external resistors in series with the inputs because the internal gain resistors can vary up to ±30%. (If gain

accuracy is not important, then resistors can be added in series with the INA193-INA198 inputs with two equal

resistors on each input.)

8.4.5 Output Voltage Range

The output of the INA193-INA198 devices are accurate within the output voltage swing range set by the power-

supply pin, V+. This is best illustrated when using the INA195 or INA198 devices (which are both versions using

a gain of 100), where a 100-mV full-scale input from the shunt resistor requires an output voltage swing of +10 V,

and a power-supply voltage sufficient to achieve +10 V on the output.