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LM26LV: How can I identify the temperature range (or Gain ) of the device?

Tiefeng Shi
Prodigy 50 points
Part Number: LM26LV

Hello

I plan to LM26L as a temperature sensor.  looked over the DS , the gain 1-4 offers different temperature range. it is preset in factory.  But how I  can select the temperature range, basing on the marker, or model number.

I can not find any info in DS.

please help me out

thanks

tiefeng

  • 0
    TI__Expert 5695 points
    Hi Tiefeng,
    As can be seen on the table of electrical characteristics on page 6 of the date sheet, each Gain corresponds to a trip point that will come from the programmed from factory.

    VTEMP sensor gain

    Gain 1 --> (trip point = 0°C to 69°C)
    Gain 2 --> (trip point = 70°C to 109°C)
    Gain 3 --> (trip point = 110°C to 129°C)
    Gain 4 --> (trip point = 130°C to 150°C)

    Once you chose a trip point for the switch, just look at the corresponding Gain using the table described above.
  • 0 in reply to Jose Arteaga4
    Prodigy 50 points
    thanks a lot , Yes, I do aware the gain 1 , gain 2, gain 3, gain 4, But how I can select gain ? the trip point was preset by factory, can I identify the trip point by model number or maker on the chip ?
  • 0 in reply to Tiefeng Shi
    Prodigy 50 points
    what is the trip point of LM26LVcisd-100?
    tiefeng
  • 0 in reply to Tiefeng Shi
    TI__Expert 6475 points

    Tiefeng,

    Using Package Option Addendum (POA) table and the Electrical Characteristics (EC) table you can identify the exact device you want.

    This is from the EC table on page 6:

    Gain 1 (trip point = 0°C to 69°C)

    Gain 2 (trip point = 70°C to 109°C)

    Gain 3 (trip point = 110°C to 129°C)

    Gain 4 (trip point = 130°C to 150°C)

    For LM26LVCISD-100.  The trip point is 100C.  Gain 2 includes 70-109C, which means that LM26LVCISD-100 has Gain=2.

    For LM26LVCISD-150/NOPB,  the trip point is 150C. Thus, the gain is 4.

    -Kelvin

  • 0 in reply to Kelvin Le THS
    Prodigy 50 points
    Hello Kelvin
    thanks a lot
    that is what I need. so basically we can use the model number identify the trip point.
    there is the temperature information in the model.
    further we can find the gain number.

    BRs
    tiefeng