[sdiy] Single rail quad op-amp recommendations

[patchell]

    The quad version of the LM358 is the LM324.....Now, what makes these
opamps single rail is the fact that the input common mode range includes the
negative supply rail and the fact that the output will go almost down to the
negative rail.  Any opamp can be used with a single supply, of course, it
depends on how you are going to use it.  The CA3130 also makes a good single
supply opamp, since the common mode input range actually goes below the
negative rail and the outputs go clear to the rails.  But, this opamp is a bit
tricky to use, and only works up to about 16 volts.

    Also, there are LM324 bigots on this list because the 324 has this nastly
little feature where you get a crossover glitch on the output under certain
circumstances (the data book shows how to eliminate this).  Also, the LM324 is
not really very good for audio frequencies.  Depending on how you use it, it
is running out of gas around 10KHz.

Richard Atkinson wrote:

> Can anyone recommend a single rail power supply quad op-amp? Something
> like the LM358 but four of them in a single package. I'm working on an FM
> expander project and I need four op-amps. The target system only has +5VDC
> on the expansion port.
>
> Richard

--
 -Jim
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