Voltage Controlled Oscillators?
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Posts: 46,084
This is off topic, but I thought I'd pick your great barins anyway, and it is
applicable to data transmissions..soo...
In our labs on campus we used the LM566 Voltage controlled oscillator. A great
chip for converting a voltage into a modulated frequency (FM). This chip can
not longer be found for sale. Anyone have any good replacements? It seems this
is such a fundemental chip, there would be a good replacement for it, but I am
having trouble finding one.
Any ideas?
Thanks,
Martin Hebel
Southern Illinois University
Electronic Systems Technology
[noparse][[/noparse]Non-text portions of this message have been removed]
applicable to data transmissions..soo...
In our labs on campus we used the LM566 Voltage controlled oscillator. A great
chip for converting a voltage into a modulated frequency (FM). This chip can
not longer be found for sale. Anyone have any good replacements? It seems this
is such a fundemental chip, there would be a good replacement for it, but I am
having trouble finding one.
Any ideas?
Thanks,
Martin Hebel
Southern Illinois University
Electronic Systems Technology
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
http://www.hoohahrecords.com/resfreq/datasheets/nte994m.pdf
Also see:
http://www.hoohahrecords.com/resfreq/datasheets/
Leroy
Martin Hebel wrote:
>
> This is off topic, but I thought I'd pick your great barins anyway, and it is
applicable to data transmissions..soo...
>
> In our labs on campus we used the LM566 Voltage controlled oscillator. A
great chip for converting a voltage into a modulated frequency (FM). This chip
can not longer be found for sale. Anyone have any good replacements? It seems
this is such a fundemental chip, there would be a good replacement for it, but I
am having trouble finding one.
>
> Any ideas?
> Thanks,
> Martin Hebel
> Southern Illinois University
> Electronic Systems Technology
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
> To UNSUBSCRIBE, just send mail to:
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>This is off topic, but I thought I'd pick your great barins anyway, and it
>is applicable to data transmissions..soo...
>
>In our labs on campus we used the LM566 Voltage controlled oscillator. A
>great chip for converting a voltage into a modulated frequency (FM). This
>chip can not longer be found for sale. Anyone have any good replacements?
Yep - use the LM567 or NE567 or NJ567 - available from many suppliers. The
566 is just the VCO portion of the 567. Might have different pinout but
should otherwise work exactly the same.
dwayne
Dwayne Reid <dwayner@p...>
Trinity Electronics Systems Ltd Edmonton, AB, CANADA
(780) 489-3199 voice (780) 487-6397 fax
Celebrating 18 years of Engineering Innovation (1984 - 2002)
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We also use the 567 tone decoder, but an important aspect is simply
the voltage to oscillator conversion. The 567 is actually the other
end, a specialized Phase Locked Loop.
--- In basicstamps@y..., Dwayne Reid <dwayner@p...> wrote:
> At 11:06 AM 2/7/02 -0600, Martin Hebel wrote:
> >This is off topic, but I thought I'd pick your great barins
anyway, and it
> >is applicable to data transmissions..soo...
> >
> >In our labs on campus we used the LM566 Voltage controlled
oscillator. A
> >great chip for converting a voltage into a modulated frequency
(FM). This
> >chip can not longer be found for sale. Anyone have any good
replacements?
>
> Yep - use the LM567 or NE567 or NJ567 - available from many
suppliers. The
> 566 is just the VCO portion of the 567. Might have different
pinout but
> should otherwise work exactly the same.
>
> dwayne
>
>
>
> Dwayne Reid <dwayner@p...>
> Trinity Electronics Systems Ltd Edmonton, AB, CANADA
> (780) 489-3199 voice (780) 487-6397 fax
>
> Celebrating 18 years of Engineering Innovation (1984 - 2002)
> .-. .-. .-. .-. .-. .-. .-. .-. .-. .-
> `-' `-' `-' `-' `-' `-' `-' `-' `-'
> Do NOT send unsolicited commercial email to this email address.
> This message neither grants consent to receive unsolicited
> commercial email nor is intended to solicit commercial email.
Not Digikey, Jameco, JDR....
Thanks anyway,
-Martin
--- In basicstamps@y..., Leroy Hall <leroy@f...> wrote:
> Would this work?
>
>
> http://www.hoohahrecords.com/resfreq/datasheets/nte994m.pdf
>
>
> Also see:
>
> http://www.hoohahrecords.com/resfreq/datasheets/
>
> Leroy
>
> Martin Hebel wrote:
> >
> > This is off topic, but I thought I'd pick your great barins
anyway, and it is applicable to data transmissions..soo...
> >
> > In our labs on campus we used the LM566 Voltage controlled
oscillator. A great chip for converting a voltage into a modulated
frequency (FM). This chip can not longer be found for sale. Anyone
have any good replacements? It seems this is such a fundemental
chip, there would be a good replacement for it, but I am having
trouble finding one.
> >
> > Any ideas?
> > Thanks,
> > Martin Hebel
> > Southern Illinois University
> > Electronic Systems Technology
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed. Text in the
Subject and Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
Leroy
selmaware wrote:
>
> Leroy, it sure would!...... If I can find anyplace that sells them!
> Not Digikey, Jameco, JDR....
>
> Thanks anyway,
> -Martin
>
> --- In basicstamps@y..., Leroy Hall <leroy@f...> wrote:
> > Would this work?
> >
> >
> > http://www.hoohahrecords.com/resfreq/datasheets/nte994m.pdf
> >
> >
> > Also see:
> >
> > http://www.hoohahrecords.com/resfreq/datasheets/
> >
> > Leroy
> >
> > Martin Hebel wrote:
> > >
> > > This is off topic, but I thought I'd pick your great barins
> anyway, and it is applicable to data transmissions..soo...
> > >
> > > In our labs on campus we used the LM566 Voltage controlled
> oscillator. A great chip for converting a voltage into a modulated
> frequency (FM). This chip can not longer be found for sale. Anyone
> have any good replacements? It seems this is such a fundemental
> chip, there would be a good replacement for it, but I am having
> trouble finding one.
> > >
> > > Any ideas?
> > > Thanks,
> > > Martin Hebel
> > > Southern Illinois University
> > > Electronic Systems Technology
> > >
> > > [noparse][[/noparse]Non-text portions of this message have been removed]
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@y...
> > > from the same email address that you subscribed. Text in the
> Subject and Body of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>Thanks Dwayne,
>We also use the 567 tone decoder, but an important aspect is simply
>the voltage to oscillator conversion. The 567 is actually the other
>end, a specialized Phase Locked Loop.
I'd agree with you but the Signetics data book specifically states that the
566 is simply the VCO section of the 567. As a result of reading that
(years ago), I quit using 566s in the products that used them and started
using the same 567s we also use (fewer parts to inventory). In view of the
fact that 566s are no longer available and 567s should still be around for
quite some time to come, I'm glad we did.
I also use the VCO section of the 4046 PLL in several products - its even
easier to use than the 566 or 567 because you can set both the upper and
lower frequency limits with 2 external resistors. But its in a larger package.
I can dig up the original Signetics data book if you would like a fax of
the data sheet. As far as I know, the whole 56x series of PLLs and VCOs
were designed by Signetics (long before they got swallowed by Phillips).
dwayne
Dwayne Reid <dwayner@p...>
Trinity Electronics Systems Ltd Edmonton, AB, CANADA
(780) 489-3199 voice (780) 487-6397 fax
Celebrating 18 years of Engineering Innovation (1984 - 2002)
.-. .-. .-. .-. .-. .-. .-. .-. .-. .-
`-' `-' `-' `-' `-' `-' `-' `-' `-'
Do NOT send unsolicited commercial email to this email address.
This message neither grants consent to receive unsolicited
commercial email nor is intended to solicit commercial email.