Forums

'7' precision opamps

Started by George Herold March 19, 2018
Hi all*, well I was trolling digikey for precision opamps... without a lot of 
success.  (too many parameters)  And then I remembered this table from AoE3.

https://www.dropbox.com/s/b6ut1jk5cf54qbt/7-prec-opamp.pdf?dl=0
note: This is only the HV section, there's another page of low voltage 
ones.  

So I was looking for opamps with ~100uV max Vos and ~100 pA max bias current.
(+/- 15 supplies) A dual would be nice, and if it came in a DIP it would save 
a board re-spin**.  The only one that fit the dip spec is the AD706, which 
is kind of wimpy speed wise.  (800 kHz GBW, 0.15 V/us).  I've got some
opa2192's and I put those into smd-dip adapters and they work fine. 
(Opa192 are fast becoming a fav.)  

My rather simple question;
Are there any new opamps I should add to the list?          


George H. 
*My bonehead mistake was I forgot that with a DC signal chain I 
care about the DC offset of every opamp/device in the chain.
** Do they call it a spin, because you use to spin on photo-resist?    
OPA2140 and a breakout board?

Cheers

Phil Hobbs
On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote:
> OPA2140 and a breakout board? > > Cheers > > Phil Hobbs
Nice, less current than the opa192. (as long as it's cool :^) So anyone have a favorite soic-dip breakout board. I've got some PA0001-nd from DK, but they are a little spendy. These from spark fun look OK. https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 George H.
On 03/20/2018 08:55 AM, George Herold wrote:
> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: >> OPA2140 and a breakout board? >> >> Cheers >> >> Phil Hobbs > > Nice, less current than the opa192. (as long as it's cool :^) > So anyone have a favorite soic-dip breakout board. I've got some > PA0001-nd from DK, but they are a little spendy. > These from spark fun look OK. > https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 > > George H. >
I like the Bellin Systems ones from Mouser. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net https://hobbs-eo.com
On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

>On 03/20/2018 08:55 AM, George Herold wrote: >> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: >>> OPA2140 and a breakout board? >>> >>> Cheers >>> >>> Phil Hobbs >> >> Nice, less current than the opa192. (as long as it's cool :^) >> So anyone have a favorite soic-dip breakout board. I've got some >> PA0001-nd from DK, but they are a little spendy. >> These from spark fun look OK. >> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 >> >> George H. >> >I like the Bellin Systems ones from Mouser. > >Cheers > >Phil Hobbs
Me too. A sheet of Bellin breakaway boards costs a tenth or less per site than some singles. We piggyback adapters on some of our own boards too. Exotica like US8s and EPC GaN fets and other handy things. -- John Larkin Highland Technology, Inc lunatic fringe electronics
On Tuesday, March 20, 2018 at 11:54:00 AM UTC-4, John Larkin wrote:
> On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > > >On 03/20/2018 08:55 AM, George Herold wrote: > >> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: > >>> OPA2140 and a breakout board? > >>> > >>> Cheers > >>> > >>> Phil Hobbs > >> > >> Nice, less current than the opa192. (as long as it's cool :^) > >> So anyone have a favorite soic-dip breakout board. I've got some > >> PA0001-nd from DK, but they are a little spendy. > >> These from spark fun look OK. > >> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 > >> > >> George H. > >> > >I like the Bellin Systems ones from Mouser. > > > >Cheers > > > >Phil Hobbs > > Me too. A sheet of Bellin breakaway boards costs a tenth or less per > site than some singles. > > We piggyback adapters on some of our own boards too. Exotica like US8s > and EPC GaN fets and other handy things. > > > -- > > John Larkin Highland Technology, Inc > > lunatic fringe electronics
OK thanks... (I'll go look see.) I found these on Amazon. https://www.amazon.com/JIUWU-Double-Prototype-Printed-Adapter/dp/B01M6ZEV72/ I already ordered a sheet... free shipping. George H.
On Tuesday, March 20, 2018 at 12:07:03 PM UTC-4, George Herold wrote:
> On Tuesday, March 20, 2018 at 11:54:00 AM UTC-4, John Larkin wrote: > > On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs > > <pcdhSpamMeSenseless@electrooptical.net> wrote: > > > > >On 03/20/2018 08:55 AM, George Herold wrote: > > >> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: > > >>> OPA2140 and a breakout board? > > >>> > > >>> Cheers > > >>> > > >>> Phil Hobbs > > >> > > >> Nice, less current than the opa192. (as long as it's cool :^) > > >> So anyone have a favorite soic-dip breakout board. I've got some > > >> PA0001-nd from DK, but they are a little spendy. > > >> These from spark fun look OK. > > >> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 > > >> > > >> George H. > > >> > > >I like the Bellin Systems ones from Mouser. > > > > > >Cheers > > > > > >Phil Hobbs > > > > Me too. A sheet of Bellin breakaway boards costs a tenth or less per > > site than some singles. > > > > We piggyback adapters on some of our own boards too. Exotica like US8s > > and EPC GaN fets and other handy things. > > > > > > -- > > > > John Larkin Highland Technology, Inc > > > > lunatic fringe electronics > > OK thanks... (I'll go look see.) I found these on Amazon. > https://www.amazon.com/JIUWU-Double-Prototype-Printed-Adapter/dp/B01M6ZEV72/ > > I already ordered a sheet... free shipping. > > George H.
Oh I've got a TO-3 to soic adapter https://www.dropbox.com/s/rorhu11y37mymhd/To3-soic.JPG?dl=0 GH
On 03/20/2018 12:14 PM, George Herold wrote:
> On Tuesday, March 20, 2018 at 12:07:03 PM UTC-4, George Herold wrote: >> On Tuesday, March 20, 2018 at 11:54:00 AM UTC-4, John Larkin wrote: >>> On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs >>> <pcdhSpamMeSenseless@electrooptical.net> wrote: >>> >>>> On 03/20/2018 08:55 AM, George Herold wrote: >>>>> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: >>>>>> OPA2140 and a breakout board? >>>>>> >>>>>> Cheers >>>>>> >>>>>> Phil Hobbs >>>>> >>>>> Nice, less current than the opa192. (as long as it's cool :^) >>>>> So anyone have a favorite soic-dip breakout board. I've got some >>>>> PA0001-nd from DK, but they are a little spendy. >>>>> These from spark fun look OK. >>>>> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 >>>>> >>>>> George H. >>>>> >>>> I like the Bellin Systems ones from Mouser. >>>> >>>> Cheers >>>> >>>> Phil Hobbs >>> >>> Me too. A sheet of Bellin breakaway boards costs a tenth or less per >>> site than some singles. >>> >>> We piggyback adapters on some of our own boards too. Exotica like US8s >>> and EPC GaN fets and other handy things. >>> >>> >>> -- >>> >>> John Larkin Highland Technology, Inc >>> >>> lunatic fringe electronics >> >> OK thanks... (I'll go look see.) I found these on Amazon. >> https://www.amazon.com/JIUWU-Double-Prototype-Printed-Adapter/dp/B01M6ZEV72/ >> >> I already ordered a sheet... free shipping. >> >> George H. > > Oh I've got a TO-3 to soic adapter > https://www.dropbox.com/s/rorhu11y37mymhd/To3-soic.JPG?dl=0 > > GH >
That's fairly twisted. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net https://hobbs-eo.com
On Tuesday, March 20, 2018 at 12:20:58 PM UTC-4, Phil Hobbs wrote:
> On 03/20/2018 12:14 PM, George Herold wrote: > > On Tuesday, March 20, 2018 at 12:07:03 PM UTC-4, George Herold wrote: > >> On Tuesday, March 20, 2018 at 11:54:00 AM UTC-4, John Larkin wrote: > >>> On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs > >>> <pcdhSpamMeSenseless@electrooptical.net> wrote: > >>> > >>>> On 03/20/2018 08:55 AM, George Herold wrote: > >>>>> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: > >>>>>> OPA2140 and a breakout board? > >>>>>> > >>>>>> Cheers > >>>>>> > >>>>>> Phil Hobbs > >>>>> > >>>>> Nice, less current than the opa192. (as long as it's cool :^) > >>>>> So anyone have a favorite soic-dip breakout board. I've got some > >>>>> PA0001-nd from DK, but they are a little spendy. > >>>>> These from spark fun look OK. > >>>>> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 > >>>>> > >>>>> George H. > >>>>> > >>>> I like the Bellin Systems ones from Mouser. > >>>> > >>>> Cheers > >>>> > >>>> Phil Hobbs > >>> > >>> Me too. A sheet of Bellin breakaway boards costs a tenth or less per > >>> site than some singles. > >>> > >>> We piggyback adapters on some of our own boards too. Exotica like US8s > >>> and EPC GaN fets and other handy things. > >>> > >>> > >>> -- > >>> > >>> John Larkin Highland Technology, Inc > >>> > >>> lunatic fringe electronics > >> > >> OK thanks... (I'll go look see.) I found these on Amazon. > >> https://www.amazon.com/JIUWU-Double-Prototype-Printed-Adapter/dp/B01M6ZEV72/ > >> > >> I already ordered a sheet... free shipping. > >> > >> George H. > > > > Oh I've got a TO-3 to soic adapter > > https://www.dropbox.com/s/rorhu11y37mymhd/To3-soic.JPG?dl=0 > > > > GH > > > That's fairly twisted.
Grin, A noisy Apex HV opamp was replaced with a LTC6090. I had one fail in the field, for some unknown reason.... it is still sorta bothering me. Try as I might I couldn't get it to die on the lab bench. George H.
> > Cheers > > Phil Hobbs > > -- > Dr Philip C D Hobbs > Principal Consultant > ElectroOptical Innovations LLC / Hobbs ElectroOptics > Optics, Electro-optics, Photonics, Analog Electronics > Briarcliff Manor NY 10510 > > http://electrooptical.net > https://hobbs-eo.com
On 03/20/2018 12:50 PM, George Herold wrote:
> On Tuesday, March 20, 2018 at 12:20:58 PM UTC-4, Phil Hobbs wrote: >> On 03/20/2018 12:14 PM, George Herold wrote: >>> On Tuesday, March 20, 2018 at 12:07:03 PM UTC-4, George Herold wrote: >>>> On Tuesday, March 20, 2018 at 11:54:00 AM UTC-4, John Larkin wrote: >>>>> On Tue, 20 Mar 2018 11:39:02 -0400, Phil Hobbs >>>>> <pcdhSpamMeSenseless@electrooptical.net> wrote: >>>>> >>>>>> On 03/20/2018 08:55 AM, George Herold wrote: >>>>>>> On Monday, March 19, 2018 at 8:57:14 PM UTC-4, pcdh...@gmail.com wrote: >>>>>>>> OPA2140 and a breakout board? >>>>>>>> >>>>>>>> Cheers >>>>>>>> >>>>>>>> Phil Hobbs >>>>>>> >>>>>>> Nice, less current than the opa192. (as long as it's cool :^) >>>>>>> So anyone have a favorite soic-dip breakout board. I've got some >>>>>>> PA0001-nd from DK, but they are a little spendy. >>>>>>> These from spark fun look OK. >>>>>>> https://www.digikey.com/product-detail/en/sparkfun-electronics/BOB-13655/1568-1123-ND/5528943 >>>>>>> >>>>>>> George H. >>>>>>> >>>>>> I like the Bellin Systems ones from Mouser. >>>>>> >>>>>> Cheers >>>>>> >>>>>> Phil Hobbs >>>>> >>>>> Me too. A sheet of Bellin breakaway boards costs a tenth or less per >>>>> site than some singles. >>>>> >>>>> We piggyback adapters on some of our own boards too. Exotica like US8s >>>>> and EPC GaN fets and other handy things. >>>>> >>>>> >>>>> -- >>>>> >>>>> John Larkin Highland Technology, Inc >>>>> >>>>> lunatic fringe electronics >>>> >>>> OK thanks... (I'll go look see.) I found these on Amazon. >>>> https://www.amazon.com/JIUWU-Double-Prototype-Printed-Adapter/dp/B01M6ZEV72/ >>>> >>>> I already ordered a sheet... free shipping. >>>> >>>> George H. >>> >>> Oh I've got a TO-3 to soic adapter >>> https://www.dropbox.com/s/rorhu11y37mymhd/To3-soic.JPG?dl=0 >>> >>> GH >>> >> That's fairly twisted. > Grin, A noisy Apex HV opamp was replaced with a LTC6090. > I had one fail in the field, for some unknown reason.... > it is still sorta bothering me. Try as I might I couldn't > get it to die on the lab bench.
Probably another creative idiot with an inductor. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net https://hobbs-eo.com