This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM7321: LM7321 SOT23-5 max height of 1.45mm?

Part Number: LM7321
Other Parts Discussed in Thread: OPA172, OPA2210, OPA1652, OPA1678

Hi,

I'd like to use this amplifier, but I find it strange that a SOT23-5 has a height tolerance up to 1.45mm while other SOT23 are ofter up to 1.1mm.

Is the 1.45mm a mistake or it is actually an irregular height?

If this is the actual height, do you have an identical alternative with a heights of max 1.1mm?

Thanks

  • Avihai,

    The height plus leads could be up to 1.45 

    The actual package (without leads) is 1.1, but this is a (reference value) "typical"

    Do you have an example where the same spec is 1.1mm max?

  • Hi,

    I see that you are correct and what I saw was TSOT-23.

    Does an equivalent to the LM7321 exist with a lower height?

    Thanks

  • Avihai,

    For single channel op amp with [Supply 30V, Gain bandwidth 15MHz, Slew Rate 14V/us, rail to rail in and out] there is only LM7321.

    To find a new device in a thinner package I will need to downgrade at least one of the parameters

    What are the key parameters required in a replacement device?

  • I can reduce the supply voltage to 20V.

  • Avihai,

    The closest device I found was OPA172IDCKR. Maximum height is 1.1mm.

    For dual op amp, OPA2210IDRGR, OPA1652AIDRGR, and OPA1678IDRGR are even thinner, 0.8mm maximum.

    OPA172
    GBW (Typ) (MHz) 10
    Slew rate (Typ) (V/us) 10
    Rail-to-rail In to V-, Out
    Vos (offset voltage @ 25 C) (Max) (mV) 1
    Iq per channel (Typ) (mA) 1.6

    OPA2210
    GBW (Typ) (MHz) 18
    Slew rate (Typ) (V/us) 6.4
    Rail-to-rail Out
    Vos (offset voltage @ 25 C) (Max) (mV) 0.035
    Iq per channel (Typ) (mA) 2.2

    OPA1652
    GBW (Typ) (MHz) 18
    Slew rate (Typ) (V/us) 10
    Rail-to-rail Out
    Vos (offset voltage @ 25 C) (Max) (mV) 1.5
    Iq per channel (Typ) (mA) 2

    OPA1678
    GBW (Typ) (MHz) 16
    Slew rate (Typ) (V/us) 9
    Rail-to-rail Out
    Vos (offset voltage @ 25 C) (Max) (mV) 2
    Iq per channel (Typ) (mA) 2