For you OP AMP IC experimentalists, I just found this device:
TSH24
available from mouser.
It has a GBP 25 MHz
15 V/us slew rate
.003% THD
and here's the biggie:
No phase inversion from saturation. Therefore it is ideally suited for filters and wahs that may saturate, and an excellent choice as an IC to use in a distortion pedal.
If you can find a dual version (this one is a quad) you can plug it directly into a TS-9
a little spendy, though, but not nearly as bad as the OP27. The OP270 (dual OP27 type) generally goes for 4 times the price of the TSH24 quad op amp...and the TSH24 is superior to the OP27 on all accounts but noise
OP27 3nV/rootHz
TSH24 14nV/rootHz
But this is such low noise that re-designing your circuit for optimal noise characteristics will have a much greater effect than the opamp.
SMTmicroelectronics makes it, they're 1.30 for the quad and 1.10 for the dual.
-Colin
Wow. :shock:
That's a large bandwidth. Around how much dinero does one chip go for?
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=344146&e_categoryid=98&e_pcodeid=51123
-Colin
Man, this thing makes a 741 look like a toy...
-Colin
Since we're on the topic of good op amps (man, I'm overposting in this thread) how about these:
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=382395&e_categoryid=98&e_pcodeid=51300
Slew rate isn't quite as good, but the bandwidth is better. The noise is .56uv, which isn't as good, but these are quite a bit cheaper. Anyone know the 741 noise?
-Colin
I'm planning a mic preamp for my minidisc player, and was going to use the Burr-Brown OPA2134.
( http://focus.ti.com/docs/prod/folders/print/opa2134.html )
TI was nice enough to send me some samples...
Not sure how well it would perform in distortion circuits though - more of a *Hi-Fi* deal.
Kerry M