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John Larkin
Guest

Wed Jan 30, 2019 9:45 pm   



On Wed, 30 Jan 2019 11:35:57 -0500, bitrex <user_at_example.net> wrote:

Quote:
On 01/30/2019 11:08 AM, gnuarm.deletethisbit_at_gmail.com wrote:
On Wednesday, January 30, 2019 at 11:02:17 AM UTC-5, John Larkin wrote:
https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.

They've got a sample button. What more do you want???

Rick C.

- Get 6 months of free supercharging
- Tesla referral code - https://ts.la/richard11209


everyone here should request a sample and say we all work for "VANDELAY
INDUSTRIES"


I once couldn't get delivery on a Maxim part. I had a friend who
taught at an EE school, so we had his entire class each request the
max of 10 samples. I paid them for the parts, nice beer/book money.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

John Larkin
Guest

Wed Jan 30, 2019 10:45 pm   



On Wed, 30 Jan 2019 15:51:26 -0500, Phil Hobbs
<pcdhSpamMeSenseless_at_electrooptical.net> wrote:

Quote:
On 1/30/19 2:59 PM, John Larkin wrote:
On Wed, 30 Jan 2019 12:30:51 -0500, Phil Hobbs
pcdhSpamMeSenseless_at_electrooptical.net> wrote:

On 1/30/19 11:02 AM, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.


And on LTB, so stock up. ;)

Beasty clock rate, but surprisingly crappy deterministic jitter--2 ps
out of a 23 ps cycle time.

Cheers

Phil Hobbs

It can't be that bad in real life.



Not sure. Not every node in that thing will respond at the same speed,
so I could easily believe pattern-dependent effects at that level.

They spec the random jitter at 200 fs, which is quite believable too.

Cheers

Phil Hobbs


OK, deterministic jitter could be that bad.

We've measured the slower NB7V52 random jitter at around 18 fs RMS,
most of which could have been in the test setup.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

Joerg
Guest

Wed Jan 30, 2019 10:45 pm   



On 2019-01-30 08:02, John Larkin wrote:
Quote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.



Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)

--
Regards, Joerg

http://www.analogconsultants.com/

Phil Hobbs
Guest

Wed Jan 30, 2019 10:45 pm   



On 1/30/19 2:59 PM, John Larkin wrote:
Quote:
On Wed, 30 Jan 2019 12:30:51 -0500, Phil Hobbs
pcdhSpamMeSenseless_at_electrooptical.net> wrote:

On 1/30/19 11:02 AM, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.


And on LTB, so stock up. ;)

Beasty clock rate, but surprisingly crappy deterministic jitter--2 ps
out of a 23 ps cycle time.

Cheers

Phil Hobbs

It can't be that bad in real life.



Not sure. Not every node in that thing will respond at the same speed,
so I could easily believe pattern-dependent effects at that level.

They spec the random jitter at 200 fs, which is quite believable too.

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

Jon Elson
Guest

Wed Jan 30, 2019 11:45 pm   



On Wed, 30 Jan 2019 11:59:22 -0800, John Larkin wrote:

Quote:
On Wed, 30 Jan 2019 12:30:51 -0500, Phil Hobbs
pcdhSpamMeSenseless_at_electrooptical.net> wrote:

On 1/30/19 11:02 AM, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.


And on LTB, so stock up. ;)

Beasty clock rate, but surprisingly crappy deterministic jitter--2 ps
out of a 23 ps cycle time.

Cheers

Phil Hobbs

It can't be that bad in real life.


Yes, it may be they don't want to dedicate $100K test gear to test this
part on the line for that spec, so they are relaxing the datasheet test
limits. I agree, anything that can clock THAT fast couldn't have 10%
jitter. But, you'd need some REAL fancy gear to actually test it.

Jon

John Larkin
Guest

Wed Jan 30, 2019 11:45 pm   



On Wed, 30 Jan 2019 13:16:05 -0800, Joerg <news_at_analogconsultants.com>
wrote:

Quote:
On 2019-01-30 08:02, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.



Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)


For that kind of money, you should demand ugly and uncomfortable.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

John Larkin
Guest

Thu Jan 31, 2019 12:45 am   



On Wed, 30 Jan 2019 16:42:38 -0600, Jon Elson <elson_at_pico-systems.com>
wrote:

Quote:
On Wed, 30 Jan 2019 11:59:22 -0800, John Larkin wrote:

On Wed, 30 Jan 2019 12:30:51 -0500, Phil Hobbs
pcdhSpamMeSenseless_at_electrooptical.net> wrote:

On 1/30/19 11:02 AM, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.


And on LTB, so stock up. ;)

Beasty clock rate, but surprisingly crappy deterministic jitter--2 ps
out of a 23 ps cycle time.

Cheers

Phil Hobbs

It can't be that bad in real life.

Yes, it may be they don't want to dedicate $100K test gear to test this
part on the line for that spec, so they are relaxing the datasheet test
limits. I agree, anything that can clock THAT fast couldn't have 10%
jitter. But, you'd need some REAL fancy gear to actually test it.

Jon


As Phil notes, that's deterministic jitter, namely data pattern
sensitivity. That would be measured with a pseudo-random NRZ data
pattern out. Random jitter, measured with a nice periodic square wave
output, is much less.

We have a LeCroy scope with a 1 ps RMS jitter floor; and it only cost
$50K or so. It has an "enhanced" mode with 100 fs jitter.

We've done dirty tricks to measure jitter below 20 fs RMS.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

Sylvia Else
Guest

Thu Jan 31, 2019 3:45 am   



On 31/01/2019 8:16 am, Joerg wrote:
Quote:
On 2019-01-30 08:02, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.



Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)


I think I'd prefer the electronic component - at least I might find some
use for it one day.

Sylvia.

John Larkin
Guest

Thu Jan 31, 2019 4:45 am   



On Thu, 31 Jan 2019 13:03:57 +1100, Sylvia Else <sylvia_at_email.invalid>
wrote:

Quote:
On 31/01/2019 8:16 am, Joerg wrote:
On 2019-01-30 08:02, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.



Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)


I think I'd prefer the electronic component - at least I might find some
use for it one day.

Sylvia.


But they are surface-mount.


--

John Larkin Highland Technology, Inc

lunatic fringe electronics


Guest

Thu Jan 31, 2019 6:45 am   



On Thursday, January 31, 2019 at 2:09:34 PM UTC+11, John Larkin wrote:
Quote:
On Thu, 31 Jan 2019 13:03:57 +1100, Sylvia Else <sylvia_at_email.invalid
wrote:

On 31/01/2019 8:16 am, Joerg wrote:
On 2019-01-30 08:02, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.

Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)

I think I'd prefer the electronic component - at least I might find some
use for it one day.

But they are surface-mount.


The solder pads aren't obvious.

--
Bill Sloman, Sydney

bitrex
Guest

Thu Jan 31, 2019 6:45 am   



On 01/30/2019 04:16 PM, Joerg wrote:
Quote:
On 2019-01-30 08:02, John Larkin wrote:

https://www.analog.com/en/products/hmc841.html

It's $616.69 each in 100 quantity.



Flip-flop, $795:

https://moneyinc.com/expensive-gucci-flip-flops/

:-)


I don't even bother...

<https://www.youtube.com/watch?v=6WJFjXtHcy4>

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