TCA0372 shortage?...

On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf
Click to expand...

Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there
 
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf
Click to expand...

Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there
 
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf
Click to expand...

Awesome, thanks! It has the same pinout, and for lower supply voltages
it might well be interchangeable. I\'ll get some and see.

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
http://hobbs-eo.com
 
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there
Click to expand...

page5: input offset voltage -/+10mV ?
 
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf
Click to expand...

Awesome, thanks! It has the same pinout, and for lower supply voltages
it might well be interchangeable. I\'ll get some and see.

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
http://hobbs-eo.com
 
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?
Click to expand...

Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
 
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?
Click to expand...

Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
 
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?
Click to expand...

Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
 
On 7/23/2020 8:14 PM, bitrex wrote:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total
distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely
though.
Click to expand...

Though why it should be that way if it is, is also mysterious, the
internal schematic doesn\'t look particularly different than the TCA0732,
except that the output stage as drawn in the TCA0732 datasheet doesn\'t
make sense, I\'m assuming it actually looks more like the ST part inside. :)

It may just be an anomaly of how ST do their datasheets
 
On 7/23/2020 8:14 PM, bitrex wrote:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total
distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely
though.
Click to expand...

Though why it should be that way if it is, is also mysterious, the
internal schematic doesn\'t look particularly different than the TCA0732,
except that the output stage as drawn in the TCA0732 datasheet doesn\'t
make sense, I\'m assuming it actually looks more like the ST part inside. :)

It may just be an anomaly of how ST do their datasheets
 
On 7/23/2020 8:14 PM, bitrex wrote:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total
distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely
though.
Click to expand...

Though why it should be that way if it is, is also mysterious, the
internal schematic doesn\'t look particularly different than the TCA0732,
except that the output stage as drawn in the TCA0732 datasheet doesn\'t
make sense, I\'m assuming it actually looks more like the ST part inside. :)

It may just be an anomaly of how ST do their datasheets
 
fredag den 24. juli 2020 kl. 02.14.39 UTC+2 skrev bitrex:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
Click to expand...

but max might happen, less than 10mV is better than usually 1mV
occupationally 15mV, you have to design for it unless you want to
start sorting
 
fredag den 24. juli 2020 kl. 02.14.39 UTC+2 skrev bitrex:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
Click to expand...

but max might happen, less than 10mV is better than usually 1mV
occupationally 15mV, you have to design for it unless you want to
start sorting
 
fredag den 24. juli 2020 kl. 02.14.39 UTC+2 skrev bitrex:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.
Click to expand...

but max might happen, less than 10mV is better than usually 1mV
occupationally 15mV, you have to design for it unless you want to
start sorting
 
On 7/23/2020 7:24 PM, Phil Hobbs wrote:
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Awesome, thanks!  It has the same pinout, and for lower supply voltages
it might well be interchangeable.  I\'ll get some and see.

Cheers

Phil Hobbs
Click to expand...

Incidentally it\'s cool how the latest revision of the TCA0372 datasheet
was like literally yesterday and it seems no one has noticed the output
stage as drawn doesn\'t make sense...

<https://www.onsemi.com/pub/Collateral/TCA0372-D.PDF>
 
On 7/23/2020 8:28 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 02.14.39 UTC+2 skrev bitrex:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.

but max might happen, less than 10mV is better than usually 1mV
occupationally 15mV, you have to design for it unless you want to
start sorting
Click to expand...

It\'s a cheap part and seems like there are few other parts like it at
that price; if the outliers show up rarely enough that it makes economic
sense to sort rather than use some more expensive part in a particular
application then fuck it, sort

But again it may just be an anomaly of how two different companies do
their datasheet and the ST part is actually as good or better in
practice, beats me. Just a thing I noticed :)
 
On 7/23/2020 8:28 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 02.14.39 UTC+2 skrev bitrex:
On 7/23/2020 7:47 PM, Lasse Langwadt Christensen wrote:
fredag den 24. juli 2020 kl. 01.12.21 UTC+2 skrev bitrex:
On 7/23/2020 7:01 PM, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce. razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Looks good but they seem a bit un-confident about the offset voltage
spec...???? it\'s usually somewhere in there

page5: input offset voltage -/+10mV ?


Right. The TCA0372 lists 1mV typ and 15 mV max, when there\'s a wide
spread there I get the impression that the 15mV parts are the real
outlier and don\'t show up much in practice. You could use them for DC
application and expect better and QC out a few boards that got a real
bad one.

When it\'s just -/+10 mV with no typ I get the impression that it\'s all
over the place from device to device, so might not be the best choice of
part for a DC-coupled application with gain.

But interpreting datasheets can be mysterious, I\'d guess the TCA would
not be so popular if it were giving offsets at the far end routinely though.

but max might happen, less than 10mV is better than usually 1mV
occupationally 15mV, you have to design for it unless you want to
start sorting
Click to expand...

It\'s a cheap part and seems like there are few other parts like it at
that price; if the outliers show up rarely enough that it makes economic
sense to sort rather than use some more expensive part in a particular
application then fuck it, sort

But again it may just be an anomaly of how two different companies do
their datasheet and the ST part is actually as good or better in
practice, beats me. Just a thing I noticed :)
 
fredag den 24. juli 2020 kl. 02.32.21 UTC+2 skrev bitrex:
On 7/23/2020 7:24 PM, Phil Hobbs wrote:
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Awesome, thanks!  It has the same pinout, and for lower supply voltages
it might well be interchangeable.  I\'ll get some and see.

Cheers

Phil Hobbs


Incidentally it\'s cool how the latest revision of the TCA0372 datasheet
was like literally yesterday and it seems no one has noticed the output
stage as drawn doesn\'t make sense...

https://www.onsemi.com/pub/Collateral/TCA0372-D.PDF
Click to expand...

I did notice the output on the block diagram made no sense the way
it is drawn, I just assumed some drew an arrow wrong on a transistor
and no one cared :)

it seems it been that way at least back to the Motorola data sheet I
found dated 1996
 
fredag den 24. juli 2020 kl. 02.32.21 UTC+2 skrev bitrex:
On 7/23/2020 7:24 PM, Phil Hobbs wrote:
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Awesome, thanks!  It has the same pinout, and for lower supply voltages
it might well be interchangeable.  I\'ll get some and see.

Cheers

Phil Hobbs


Incidentally it\'s cool how the latest revision of the TCA0372 datasheet
was like literally yesterday and it seems no one has noticed the output
stage as drawn doesn\'t make sense...

https://www.onsemi.com/pub/Collateral/TCA0372-D.PDF
Click to expand...

I did notice the output on the block diagram made no sense the way
it is drawn, I just assumed some drew an arrow wrong on a transistor
and no one cared :)

it seems it been that way at least back to the Motorola data sheet I
found dated 1996
 
fredag den 24. juli 2020 kl. 02.32.21 UTC+2 skrev bitrex:
On 7/23/2020 7:24 PM, Phil Hobbs wrote:
On 2020-07-23 19:01, Lasse Langwadt Christensen wrote:
torsdag den 23. juli 2020 kl. 20.15.24 UTC+2 skrev Phil Hobbs:
ON still lists the TCA0372 power op amp as active, but total distributor
stock is less than 1k pieces and the quoted lead time is 6-1/2 months!

Here I\'m trying to hang a couple of ADA4817s off a 20-V rail, and my
go-to floating ground generator is getting scarce.   razzafrazza%$&@!!


for 20V wouldn\'t this be an alternative?

https://www.st.com/resource/en/datasheet/l2720w.pdf


Awesome, thanks!  It has the same pinout, and for lower supply voltages
it might well be interchangeable.  I\'ll get some and see.

Cheers

Phil Hobbs


Incidentally it\'s cool how the latest revision of the TCA0372 datasheet
was like literally yesterday and it seems no one has noticed the output
stage as drawn doesn\'t make sense...

https://www.onsemi.com/pub/Collateral/TCA0372-D.PDF
Click to expand...

I did notice the output on the block diagram made no sense the way
it is drawn, I just assumed some drew an arrow wrong on a transistor
and no one cared :)

it seems it been that way at least back to the Motorola data sheet I
found dated 1996
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top