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Figure 17. and 18. of the data sheet of INA271

K.N
Expert 4445 points
Other Parts Discussed in Thread: INA270, INA271

The scale of Vout(V) of Figure 17. of the data sheet of INA270/271 is mentioned with  following (a).

As for the scale of Vout(V), which of (a) or (b) is right?

(a) 0,   0.2,   0.4,  0.6,   0.8,  1.0  ....... 2.0
(b) 0, 0.04, 0.08, 0.12, 0.16, 0.20 ....... 0.40

I think that (b) is right.


In addition, the scale of Vout(V) of Figure 18. of the data sheet of INA270/271 is mentioned with following (c).

As for the scale of Vout(V), which of (c) or (d) is right?

(c) 0, 0.04, 0.08, 0.12, 0.16, 0.20 ....... 0.40, 0.48, 0.48
(d) 0, 0.04, 0.08, 0.12, 0.16, 0.20 ....... 0.40, 0.44, 0.48

I think that (d) is right.

Regards,
Keishi.Nishijima

  • 0
    TI__Intellectual 2940 points

    Your comments are correct as shown above.  The INA270/1 has the same core as the INA19X family of devices which is where figure 17 originated from.  Figure 17 appears as though is was just copied into the INA270/1 datasheet without adjusting the y-axis to account for the different gain present in the INA271 device.  Your scale you have listed would be correct given the gain of 20 for the INA271.  Figure 18 was adjusted to take into account the gain of the INA271 but there is a typographical error in the scale as you have observed.  The lower 0.48V level should read 0.44V.  I will pass these edits along to our graphical team so they can be applied to the datasheet.

  • 0 in reply to Scott Hill
    TI__Expert 4445 points

    Hi,Scott Hill

    There was an inquiry from a Japanese customer. 
    Please inform the time of the version up of Figure 17 and 18 of INA270/271 Datasheet.

    Bestregards
    Keishi,Nishijima

  • 0 in reply to K.N
    TI__Intellectual 2940 points

    These datasheet corrections were submitted into the queue for edits to this datahseet back in February when the customer identified the error in the scale of that particular figure.  I will contact the group here that handles updates to the datasheets to check on the status of this correction.

    Regards,

    Scott Hill
    PA Applications

  • 0 in reply to Scott Hill
    TI__Expert 4445 points

    Hi,Scott Hill

    Thank you for an early answer.


    When the completion of the version up of Datasheet is over the end of May, please contact it.
    In addition, give me communication when it was really made version up on Web.

    Bestregards
    Keishi,Nishijima

  • 0 in reply to K.N
    TI__Expert 4445 points

    Hi,Scott Hill

    Thank you .
    I was able to confirm version up on web.

    Bestregards
    Keishi,Nishijima