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TLV2371-Q1: Request for confirmation of datasheet spec and output level

Part Number: TLV2371-Q1
Other Parts Discussed in Thread: TLV2371

Hi, Support Team

I have received an inquiry from a customer regarding the contents of the datasheet.

Among the specifications shown in the figure below, this is an inquiry based on IOH.

1.What does IOH mean?(-1mA, -5mA)

2. Why are the output voltage min. and typ. values different according to the IOH value?

The customer company conducted a test with two identical products.

These are ch1 and ch2 in the figure below.


Vin: 0~3V variable

A 220ohm resistor is connected in series to the output terminal.

When the above waveform is enlarged, there is a difference of 0.1 to 0.2V between ch1 and ch2.

What is the reason?




  • Hi MJ,

    IOH is the op amp output current valid for those specifications.

    The specifications are different for the two specifications because one spec uses a 1mA output current and the other uses a 5mA output current. The more current the op amp must supply to the load the further the op amp output voltage will be able to swing from the supply voltage. I recommend watching our TI Precision Lab Videos on Input/Output Voltage Limitations for more information.

    There will be some variation from device to device (or channel to channel) and since you are testing two different channels there will also be differences in component tolerances of the two circuits. Also, is there a slight difference in the input voltage between the two channels? Is the op amp configured with gain? Can you please provide a schematic?

    Thank you,

    Tim Claycomb

  • Hi Mj,

    this specification should be seen in context with figures 7, 9 and 11. See figure 9, for instance:

    What is the idea behind this specification?

    Assume the output of TLV2371 is strongly driven to the positive supply rail so that the output stage fully saturates. Then, this specification can give an answer to the question: What is the maximum voltage the TLV2371 can output when a certain output current (IOH = output current when the output is "high") is demanded?

    It should be kept in mind, that when operating in full output saturation the OPAmp is no longer working in its linear range.