Slackmaster2K
Gone
Nevermind I found it, however I'm not sure which variant to get. If a guy was to replace the output amps of his SX202 with OPA2132's, would this be the one?
http://www.digikey.com/scripts/us/dksus.dll?Detail?Ref=10214&Row=152323
Slackmaster 2000
http://www.digikey.com/scripts/us/dksus.dll?Detail?Ref=10214&Row=152323
Slackmaster 2000
skippy
New member
Most of those alternate numbers are alternate packages and performance ranges. You'd want the OPA2132P or PA for the basic, normal-size plastic 8-pin minidip package. The U-series guys are SODIP surface-mount parts. I don't know anything about the piece you're reworking, but I somehow doubt that you'd want to attack an SMT board...
The P is more desirable than the PA: the P parts are input-offset-voltage binned to a higher spec (+-0.5mV) than the PA parts (+-2mV). Of course, if the circuit design doesn't need a super-low-offset part, either one would work, so you could take the cheaper one...
http://www-s.ti.com/sc/psheets/sbos054/sbos054.pdf just in case you haven't seen that version of the data sheet...
The P is more desirable than the PA: the P parts are input-offset-voltage binned to a higher spec (+-0.5mV) than the PA parts (+-2mV). Of course, if the circuit design doesn't need a super-low-offset part, either one would work, so you could take the cheaper one...
http://www-s.ti.com/sc/psheets/sbos054/sbos054.pdf just in case you haven't seen that version of the data sheet...
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Slackmaster2K
Gone
Thanks skippy...I'm kind of a guerilla with a soldering iron at this point. The mod is supposedly *reasonably* simple given enough patience...and looking at it I think I can do it. What you just said is exactly what a guy said over on RAP...so now I feel confident in ordering the OPA2123P....even if it is $9 (opposed to $6). Thanks man!
Slackmaster 2000
Slackmaster 2000
B
Bear'sGnFission
New member
What chip are you replacing in the Symetrix? I haven't checked data sheets in a while, is the OPA2132 unity gain stable? You might have a hell of a time rooting out oscilations if it isn't. Also, can the power supply cope with the extra current draw? Probably isn't a big issue, but it's something I have to take care of before I rechip my console.
You probably don't need enough to make this worth your while, but you can always by chips in bulk at a lower per piece price and auction off the extras on ebay. If you can beat the Digikey price per unit for the remaining volume, but still reduce your per unit cost, that's pretty nice.
Bear
You probably don't need enough to make this worth your while, but you can always by chips in bulk at a lower per piece price and auction off the extras on ebay. If you can beat the Digikey price per unit for the remaining volume, but still reduce your per unit cost, that's pretty nice.
Bear
Slackmaster2K
Gone
Yes the OPA2132 is unity gain stable. I'm replacing three BA4560 chips. This is (was) a very common mod.
I thought about buying bulk, but we're only talking 3 chips here at $9 each. That's not too outrageous.
Slackmaster 2000
I thought about buying bulk, but we're only talking 3 chips here at $9 each. That's not too outrageous.
Slackmaster 2000