[sdiy] low current opamps

[Tom Wiltshire]

I've used TL06x for stomp box designs with a 9V battery, and they  
were fine for that. I didn't use any DC-DC convertor, instead just  
running them in a single supply configuration with everything that  
would ordinarily be "ground" connected to a virtual ground (or  
grounds) set up mid way between the supply rails (4.5V).

I also used the LF444, which drops the current consumption even  
further IIRC, but costs more money. I was very concerned about  
getting the most battery life out of my pedals.

In short, TL06x are a good option.

T.



On 8 Sep 2009, at 23:23, Dan Snazelle wrote:

>
>
> ouch
>
> 1.50 a piece is steep. so used to 50-75 cents for 72/82's
>
> maybe I WILL go with tlo62's
>
> they didnt seem to work as well but that could have been my error
>
> any fans of the TL06x series here??
>
> thanks
>
>
>
>
>
>
>
> ----------------------------------------
>> From: dingebre at 3dphysics.net
>> To: subjectivity at hotmail.com; lightburnx at yahoo.com; synth- 
>> diy at dropmix.xs4all.nl
>> Subject: RE: [sdiy] low current opamps
>> Date: Tue, 8 Sep 2009 15:24:02 -0600
>>
>> Re-post with the "good" subject.
>>
>> Digikey has the LF442 in stock for about $1.50.
>>
>> ~~ -----Original Message-----
>> ~~ From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>> ~~ bounces at dropmix.xs4all.nl] On Behalf Of Dan Snazelle
>> ~~ Sent: Tuesday, September 08, 2009 3:03 PM
>> ~~ To: lightburnx at yahoo.com; synth-diy at dropmix.xs4all.nl
>> ~~ Subject: RE: [sdiy] low current opamps
>> ~~
>> ~~
>> ~~
>> ~~
>> ~~
>> ~~ sorry...not sure why the NO SUBJECT thing happened...hotmail  
>> messed up my
>> ~~ email
>> ~~
>> ~~ anyway...i was referring to low current draw opamps....I am  
>> using a DC TO
>> DC
>> ~~ converter to get +/-15volts
>> ~~
>> ~~ However, i have found that if i use 8 dual tl072's, a 13700 or  
>> two, and a
>> ~~ regulator, it starts draining the DC TO DC converter TOO MUCH (the
>> voltage
>> ~~ meter starts reading +/-8 volts)
>> ~~
>> ~~ so with lf442 i can do it all and still be at =/-15
>> ~~
>> ~~ thanks
>> ~~
>> ~~
>> ~~
>> ~~ ----------------------------------------
>> ~~> Date: Tue, 8 Sep 2009 10:42:39 -0700
>> ~~> From: lightburnx at yahoo.com
>> ~~> Subject: Re: [sdiy] (no subject)
>> ~~> To: synth-diy at dropmix.xs4all.nl
>> ~~>
>> ~~> Try an LM358 (Mouser has em). Can work on a single supply  
>> even, if
>> that's
>> ~~ what you additionally meant by 9V battery. Though, it has a  
>> tenth of the
>> slew
>> ~~ rate of the LF442.
>> ~~>
>> ~~> http://www.national.com/mpf/LM/LM358.html
>> ~~>
>> ~~>
>> ~~> _Kyle
>> ~~>
>> ~~> --- On Tue, 9/8/09, Dan Snazelle wrote:
>> ~~>
>> ~~>> From: Dan Snazelle
>> ~~>> Subject: [sdiy] (no subject)
>> ~~>> To: synth-diy at dropmix.xs4all.nl
>> ~~>> Date: Tuesday, September 8, 2009, 9:52 AM
>> ~~>>
>> ~~>> since mouser doesnt carry the LF442 or Lf 444 I am looking
>> ~~>> into other low power (good for 9v battery)
>> ~~>> opamps in dual or quad
>> ~~>>
>> ~~>> thanks
>> ~~>>
>> ~~>> --------------------------------------------
>> ~~>> check out various dan music at:
>> ~~>>
>> ~~>> http://www.myspace.com/lossnyc
>> ~~>>
>> ~~>> (updated monthly)
>> ~~>>
>> ~~>> http://www.soundclick.com/lossnyc.htm
>> ~~>>
>> ~~>>
>> ~~>>
>> ~~>> http://www.indie911.com/dan-snazelle
>> ~~>>
>> ~~>> (or for techno) http://www.myspace.com/snazelle
>> ~~>>
>> ~~>> ALSO check out Dan synth/Fx projects:
>> ~~>>
>> ~~>> AUDIO ARK:
>> ~~>>
>> ~~>> www.youtube.com/watch?v=TJRpvaOcUic
>> ~~>>
>> ~~>> www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page
>> ~~>>
>> ~~>> www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page
>> ~~>>
>> ~~>> and soundtrack/design work:
>> ~~>>
>> ~~>> NEW: check out Dan's sound design from the 1998 award
>> ~~>> winning film SAFARI by catherine chalmers
>> ~~>>
>> ~~>> http://www.catherinechalmers.com/videos.cfm
>> ~~>>
>> ~~>>
>> ~~>>
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