2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

0

2

4

6

8

10

12

14

16

18

20

22

V

(mV)

SENSE

24

INA205V

TestedLimit

OUT

(1)

V

CM2

V

CM1

V

CM3

V

CM4

V

,V

,andV

CM2

CM3

fromparttopartoftheV

thatcancause

CM

maximumV

withV

<20mV.

OUT

SENSE

V

TestedLimitat

OUT

V

=0mV,0

V

£

CM1

SENSE

V

£

.

S

NOTE:(1)INA203V

TestedLimit=0.4V.INA204V

TestedLimit=1V.

OUT

OUT

Ideal

INA203, INA204, INA205

www.ti.com

SBOS393E – MARCH 2007 – REVISED NOVEMBER 2015

Device Functional Modes (continued)

8.4.3 Transient Protection

The –16 V to 80 V common-mode range of the INA203, INA204, and INA205 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 INA203, INA204, and INA205 are exposed to

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

absorbers (Zeners or Transzorbs) are necessary. Use of metal oxide varistors (MOVs) or video disk recorders

(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 INA203, INA204, and INA205 to be exposed to

transients greater than 80 V (that is, allow for transient absorber tolerance, as well as additional voltage because

of transient absorber dynamic impedance). Despite the use of internal Zener-type ESD protection, the INA203,

INA204, and INA205 do not lend themselves to using external resistors in series with the inputs because the

internal gain resistors can vary up to ±30% but are closely matched. (If gain accuracy is not important, then

resistors can be added in series with the INA203, INA204, and INA205 inputs with two equal resistors on each

input.)

8.4.4 Output Voltage Range

The output of the INA203, INA204, and INA205 is accurate within the output voltage swing range set by the

power-supply pin, Vs. This performance is best illustrated when using the INA205 (a gain of 100 version), 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.

8.4.5 Reference

The INA203, INA204, and INA205 include an internal voltage reference that has a load regulation of 0.4 mV/mA

(typical), and not more than 100 ppm/°C of drift. Only the 14-pin package allows external access to reference

voltages, where voltages of 1.2 V and 0.6 V are both available. Output current versus output voltage is illustrated

in the Typical Characteristics section.

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