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TL081: TL081IP and uA741CP

toshiya kadoyama
Prodigy 70 points
Part Number: TL081
Other Parts Discussed in Thread: UA741,

Hello


I am considering adopting TL081IP and uA741CP.
Please let me know the following information as it is not mentioned in the data sheet.
(1)Power Dissipation (ABSOLUTE MAXIMUM RATINGS)
(2) When uA741CP is used at -20°C to 80°C, what are the characteristics that deviate from?
(3) Output Current (RECOMMENDED OPERATING CONDITION)
(4)Temperature coefficient of input offset(TYP,MAX)
(5)Offset Voltage Adjustable Rangey
(6)Power Consumption(ELECTRICAL CHARACTERISTICS)

thank you

  • 0
    TI__Guru*** 145766 points

    Hello Kadoyama,

    For all three posts, why was PDIP package was selected? 

    1) See Absolute Maximum Ratings table's Operating junction temperature, TJ 150° and also see Thermal Information RθJA Junction-to-ambient thermal resistance. With ambient temperature known, absolute maximum power dissipation can be calculated. PDmax = (150C - Ta)/ RθJA

    2) uA741 is 0C to 70C device

    3) Vom in Electrical Characteristics tables mention 2k load and +/-10V so at least +/-5mA; 

    4) TL081 is 18uV/C typical, maximum wouldn't create 15mV of Vos; uA741 doesn't say, but 25C Vos is 6mV and temperature is 7.5mV max.

    5) I discourage using offset pins because no new devices use them, so they won't be available some day in future.

    6) Consumption is ICC * VCC(total)