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Low frequency analog VCO with sinewave output?

Started by davew August 24, 2011
On Wed, 24 Aug 2011 21:55:02 +1000, "Phil Allison" <phil_a@tpg.com.au>
wrote:

> >"dave wanker" > > >** FFS - define " low frequency "'
--- Clue: "Best I've found so far might be the old 8038 function generator chip." http://www.intersil.com/data/fn/fn2864.pdf :-) -- JF
On a sunny day (Wed, 24 Aug 2011 05:13:21 -0700 (PDT)) it happened davew
<david.wooff@gmail.com> wrote in
<db1e7b09-5d43-470d-839c-1558a2d9e4f1@m18g2000vbl.googlegroups.com>:

>On Aug 24, 1:11&#4294967295;pm, "Phil Allison" <phi...@tpg.com.au> wrote: >> > "dave the fuckwit wanker" >> >> > ** FFS - define " low frequency "' >> >> > We are not fucking mind readers !!!!!!!!! >> >> > You stupid POS. >> >> Well you should have ... >> >> ** You should have been aborted. >> >> Audio band is what I'm interested in. >> >> ** Now you tell us. >> >> &#4294967295; You stupid, bullshitting PITA cunthead >> >> &#4294967295; FOAD >> >> ... Phil > >Any ideas Phil? You come across as an ideas man to me.
XR2207
"John Fields
 "Phil Allison"
> >>"dave wanker" >> >> >>** FFS - define " low frequency "' > > Clue: > > "Best I've found so far might be the old 8038 function generator > chip." >
** WTF is your problem - shit head ??? The 8083 operates from 0.001 Hz to 300kHz. Which bit of that FUCKING ENORMOUS range is automatically " low frequency " ?????????? eh ??? You context blind, ASD fucked, septic bloody moron. ... Phil
On Aug 24, 2:01=A0pm, "Phil Allison" <phi...@tpg.com.au> wrote:
> "John Fields > =A0"Phil Allison" > > > > >>"dave wanker" > > >>** FFS =A0- =A0define " low frequency "' > > > Clue: > > > "Best I've found so far might be the old 8038 function generator > > chip." > > ** =A0WTF is your problem =A0- =A0 shit head ??? > > The 8083 operates from =A00.001 Hz =A0to =A0300kHz. > > Which bit of that =A0 FUCKING =A0ENORMOUS =A0range is automatically > > =A0" low frequency " =A0?????????? =A0 =A0eh =A0??? > > You context blind, =A0ASD fucked, septic bloody moron. > > ... =A0Phil
"davew"


**  Fuck off Google monkey.






On Aug 24, 2:17=A0pm, "Phil Allison" <phi...@tpg.com.au> wrote:
> "davew" > > ** =A0Fuck off Google monkey.
On Aug 24, 9:05=A0am, davew <david.wo...@gmail.com> wrote:
> On Aug 24, 2:01=A0pm, "Phil Allison" <phi...@tpg.com.au> wrote: > > > "John Fields > > =A0"Phil Allison" > > > >>"dave wanker" > > > >>** FFS =A0- =A0define " low frequency "' > > > > Clue: > > > > "Best I've found so far might be the old 8038 function generator > > > chip." > > > ** =A0WTF is your problem =A0- =A0 shit head ??? > > > The 8083 operates from =A00.001 Hz =A0to =A0300kHz. > > > Which bit of that =A0 FUCKING =A0ENORMOUS =A0range is automatically > > > =A0" low frequency " =A0?????????? =A0 =A0eh =A0??? > > > You context blind, =A0ASD fucked, septic bloody moron. > > > ... =A0Phil
Ah, you've met Phil, our official s.e.d. greeter. Welcome. Exar made the XR2206, trianglewave shaping method, THD 1-2%. -- Cheers, James Arthur
davew wrote:

>I'm searching for a simple one chip solution if anyone has any ideas. >Best I've found so far might be the old 8038 function generator chip.
Sorry, not a single chip solution. But, if the system where this will be used already has a microcontroller, why not build your own? Because of the huge consumer electronics market there are many good and inexpensive audio codecs and DACs. (AK4425A for example) Feed it with the right data and wou can generate any waveform. A two-chip solution is probably doable - a micro with a built in ADC and an audio DAC. -- Roberto Waltman [ Please reply to the group. Return address is invalid ]
On Aug 24, 3:00=A0pm, dagmargoodb...@yahoo.com wrote:
> On Aug 24, 9:05=A0am, davew <david.wo...@gmail.com> wrote: > > > > > > > On Aug 24, 2:01=A0pm, "Phil Allison" <phi...@tpg.com.au> wrote: > > > > "John Fields > > > =A0"Phil Allison" > > > > >>"dave wanker" > > > > >>** FFS =A0- =A0define " low frequency "' > > > > > Clue: > > > > > "Best I've found so far might be the old 8038 function generator > > > > chip." > > > > ** =A0WTF is your problem =A0- =A0 shit head ??? > > > > The 8083 operates from =A00.001 Hz =A0to =A0300kHz. > > > > Which bit of that =A0 FUCKING =A0ENORMOUS =A0range is automatically > > > > =A0" low frequency " =A0?????????? =A0 =A0eh =A0??? > > > > You context blind, =A0ASD fucked, septic bloody moron. > > > > ... =A0Phil > > Ah, you've met Phil, our official s.e.d. greeter. =A0Welcome. > > Exar made the XR2206, trianglewave shaping method, THD 1-2%. > > -- > Cheers, > James Arthur- Hide quoted text - > > - Show quoted text -
Great. Thanks for all the ideas. Looks like I need to compare the 8038 vs XR2206. Dave W.
On Aug 24, 3:17=A0pm, Roberto Waltman <use...@rwaltman.com> wrote:
> davew wrote: > >I'm searching for a simple one chip solution if anyone has any ideas. > >Best I've found so far might be the old 8038 function generator chip. > > Sorry, not a single chip solution. But, if the system where this will > be used already has a microcontroller, why not build your own? > Because of the huge consumer electronics market there are many good > and inexpensive audio codecs and DACs. (AK4425A for example) > Feed it with the right data and wou can generate any waveform. > A two-chip solution is probably doable - a micro with a built in ADC > and an audio DAC. > -- > Roberto Waltman > > [ Please reply to the group. > =A0 Return address is invalid ]
Hi Roberto, thanks for the idea. As it happens I want to stick to analogue in this application. Bit of a dinosaur project in mind. ;-)