Post Go back to editing

why wont my AD843 work inplace of my AD826 in my audio pre-amp?

why wont my AD843 work inplace of my AD826 in my audio pre-amp? I thought both being 8pin and the AD843 recommended as great sounding that it would swap out for the AD826 i had in there; but the AD843 won't pass audio through it to the output of pre-amp.

Top Replies

Parents
  •      Hello rtp,

         The two chips are not pin-compatible.  The AD826 is a dual (stereo) op-amp; the AD843 is a single.

         To engineer a suitable upgrade replacement, match the original chip's supply voltage, pin-out, and other important features.  For example, the ADA4275-2 may work well.  Download its data sheet at

    http://www.analog.com/media/en/technical-documentation/data-sheets/ADA4075-2.pdf

    The first page of this data sheet lists other possible choices as shown below:

         You could also do a parametric search, although I find these rather complicated to use.

         Note that many of the newer, improved choices are only available in surface-mount packages, so you'll need to do some adaptation to insert them into an older design.

         Best regards,

         Bob

Reply
  •      Hello rtp,

         The two chips are not pin-compatible.  The AD826 is a dual (stereo) op-amp; the AD843 is a single.

         To engineer a suitable upgrade replacement, match the original chip's supply voltage, pin-out, and other important features.  For example, the ADA4275-2 may work well.  Download its data sheet at

    http://www.analog.com/media/en/technical-documentation/data-sheets/ADA4075-2.pdf

    The first page of this data sheet lists other possible choices as shown below:

         You could also do a parametric search, although I find these rather complicated to use.

         Note that many of the newer, improved choices are only available in surface-mount packages, so you'll need to do some adaptation to insert them into an older design.

         Best regards,

         Bob

Children
No Data