[sdiy] Op amp notes

[James Patchell]

I have been using the TL05x for about a year now...I am quite pleased with 
the way they work...so I can second that.  The only problem is that the 
TL051 is only availiable in an SOIC package, as near as I can tell (no dip 
:-( .....  ).

At 07:16 PM 9/3/2004 -0600, Ian Fritz wrote:
>Hey listers --
>
>While ordering some replacement parts I noticed that Burr-Brown (TI) is no 
>longer making my favorite general-purpose high-performance op amps, the 
>OPA132, 2132 and 4132, in DIP packages.  They are still available in 
>SOIC.  Poking around a bit, I noticed that the OPA134, 2134 and 4134 
>appears to be a practically identical series, except fully speced (and 
>marketed) for audio applications. They are also a fair bit less 
>expensive.  So anyone looking at my designs using these chips should 
>consider substituting the x134 for the x132
>
>I also noticed for the first time (DOH) the TL051,2,4 series.  For anyone 
>as asleep at the wheel as I am, these are improved replacements for the 
>TL07x and TL08x series.  Their performance is quite impressive for their 
>price: Typical offset of 0.35 mV, input bias of 30 pA and slew rates of 
>about 20 V/usec. For people making do with 07x's in critical applications, 
>this might be a worthwhile upgrade.
>
>   Ian
>

         -Jim
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