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Standard single (TL071) pattern did power opamp ?

Discussion in 'Electronic Components' started by moby, Apr 18, 2008.

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  1. moby

    moby Guest

    Does there exist a DIP8 single opamp (TL071/NE5534 pattern) capable of
    driving a 50 ohm load while still being usable on +/- 15 volt rails
    (cuts out video opamps). Trying to beef up the headphone drive of an
    old Neve mixer without hacking it in any way (ie adding in current
    follower transistors etc).
    M
     
  2. Joerg

    Joerg Guest


    Depends on how many volts you need into 50ohms. Calculate the
    dissipation inside the chip carefully or it'll smoke out. 50ohms is
    tough. Some will do it even if not mentioned but don't push it too far
    in amplitude or phssst ... BANG.

    There are fast opamps that can operate on +/-15V such as the THS4021
    which I recently used:
    http://focus.ti.com/lit/ds/symlink/ths4022.pdf

    This one does video speeds with ease. But be careful, it must be
    operated at gains of 10 or higher.
     
  3. Eeyore

    Eeyore Guest

    Certainly none that I know of. Which Neve mixer is this btw ?

    Graham
     
  4. GregS

    GregS Guest

    If you sum two channels of a 600 ohm drive chip, you can drive about 300 ohms.

    If you can turn a SOIC into a DIP take a look at the TI audio headphone
    amplifier chips. There are some 8 pinned ones but in another package.
    These things must require some type of cooling ?

    greg
     
  5. GregS

    GregS Guest

    Most of those I was looking at are low voltage. What chip is in it now ?
    Check out a TLE2061AIP

    greg
     
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