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OPA2210: Operating Temperature Clarification

Part Number: OPA2210

Team,

Section 6.3 of the datasheet shows a "Specified Temperature" of -40 to 125C & an "Operating Temperature" of -55 to 150C. I see on the "Order & Quality" section on the product folder it shows the operating temp raneg is -40 to 125C. Can you shed some light on how to read the "Specified Temperature" & "Operating Temperature" in Section 6.3 of the datasheet?

Thanks.

  • Hello Go,

    The OPA2210 datasheet is the governing document and provides the information regarding what TI assures about the product's electrical performances. The datasheet correctly lists the Specified and Operating temperature ranges in the Section 6.3 table as:

    The Operating  temperature information listed in the Order and Quality web page incorrectly listed it as -40°C to 125°C. It should be listed as -40°C to 150°C.

    Thanks for bringing this to our attention.

    Regards, Thomas

    Precision Amplifiers Applications Engineering

  • Thomas,

    Thank you. You mention the "Operating temperature... should be listed as -40C to 150C." These numbers seem to be a mix between the "Specified temperature" & "Operating Temperature, Ta" - can you clarify the difference between these two?

    Thank you.

  • Hello Go,

    Sure. When you view the OPA2210 datasheet Electrical Characteristics tables you will see that along the top of the tables it states " at VS = ±15 V, TA = 25°C, RL = 10 kΩ connected to mid-supply, and VCM = VOUT = mid-supply (unless otherwise noted)." The important point for this conversation is the TA = 25°C, which is the temperature at which most parameters in the table are specified and assured to meet. However, as you look down the table you will note that many of the parameters are also specified with a temperature range of TA = –40°C to 125°C. This is the Specified temperature range for the parameter. There is a Typical, and a Minimum or Maximum specified for each of the applicable parameters.

    You may notice there is no mention of Operating temperature in the Electrical Characteristics tables. Operating temperature range is simply the functional temperature range of the OPA2210. Once the temperature extremes of the Specified temperature range are exceeded and the Operating temperature range is entered no assurances are made about what the electrical performances will be. It simply means that the OPA221 continues to function as an operational amplifier over the Operating temperature range. It can be expected that some of the electrical parameters will exhibit degradation from their Specified temperature range levels within this extended temperature region.

    Regards, Thomas

    Precision Amplifiers Applications Engineering

  • Thomas,

    Thanks. I understand that between -55 and -40 and between +125 and +150 we’re on our own – only guaranteed to function as an OpAmp.  But I don’t understand why you wrote “It should be listed as -40C to +150C.”  Seems it should be -40 to +125 (some specifications guaranteed), or -55 to +150C (guaranteed to be an OpAmp).  Maybe -40C to +150C is an adjustment for junction temperature over ambient range -40 to +125C?  If that’s the case, it should say so, but I think it’s better not to mention a third temperature range at all.

    Thank you.

  • Hello Go,

    The low end temperature listed on the Ordering and Quality web page should be -55°C such that it matches the datasheet Section 6.3 table information. The OPA2210 web page should list the Operating temperature range as –55°C to 150°C. I listed the wrong lower temperature in my previous response.

    Sorry about the confusion.

    Thomas

    Precision Amplifiers Applications Engineering