[Fresno Bob]

Is there an alternative to the LM6171?

 

[Fresno Bob]

Guess theres no alternatives.

 

[PinkFloyd]

Hi Bob,

I'm not sure what you mean by an "alternative" to the LM6171? If you mean an opamp which sounds almost the same then the LM6181 is pretty close..... if you mean other opamps which can be rolled in, in place of the LM6171 then there are plenty such as:

LM6181
OPA627
AD8610
AD8605
OPA134
AD843

etc. etc.

Mike.

 

[Fresno Bob]

Thanks PF

 

[PinkFloyd]

So what did you mean by alternative? sounds the same or roll in replacements?

Mike.

 

[Fresno Bob]

was just wondering if there was an alternative to using LM6171 as shown here http://www.sgheadphones.net/index.php?showtopic=3220

 

[jcx]

looks like its being used as a rail splitter, any replacement should have similar high output current to soak up the 2 drive op amp currents which are largely in phase at low frequencies where the level is highest

the lm6171 ~70 mA output current is a good match to 2x opa134 ~30mA output ea x2 ~= 60 mA

 

[Pars]

Good grief! There are a crapload of single opamps, all of which could be classed as an "alternative" to an LM6171. PF gave you a partial list.

Whether any of these is a "good" alternative or not depends upon what you want to use it for. The majority of those listed by PF do not have the current drive capability of the LM6171 and will therefore not function as effectively as an LM6171 in the application that you later provided (although I would guess an LM6181 would).

LM6171s are readily available online (Digikey LM6171BIN-ND, for example) and are reasonably priced ($2.38).

Ask your questions more clearly and provide the pertinent details of what you are trying to do upfront, and you will get alot better help.

 

[Fresno Bob]

Pars Thanks for not helping

PF thanks again for the list

 

[mono]

Quote:

Originally Posted by Fresno Bob Is there an alternative to the LM6171?

yes

Any other questions?

I suspect you're essentially looking for alternate virtual ground options, which means you need consider how much current the circuit needs else no way to qualify alternatives. Tangent has some ideas in this area. Check your LM6171 pintout and choose (or fabricate) a pin-compatible substitute, but as Pars mentioned the LM6171 is cheap and available so unless you have a specific reason not to use one ...