[sdiy] low current opamps

[David Ingebretsen]

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
~~ >>
~~ >> --------------------------------------------
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~~ >>
~~ >>
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~~ >>
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~~ >>
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~~ >>
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~~ >>
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~~ >>
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~~ >>
~~ >>
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