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Does this comparator exist....
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Jim Thompson
Dec 30, 2012, 4:08:29 PM12/30/12
to
Does this comparator exist....
Has the usual two inputs, inverting and non-inverting, BUT it switches
when the DIFFERENCE between the two inputs is some reference value,
either fixed/built-in, or adjustable by an extra pin?
I know I could construct such a thing, but I'm looking for something
small, minimum pins, etc., i.e. a Joerg part ;-)
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Has the usual two inputs, inverting and non-inverting, BUT it switches
when the DIFFERENCE between the two inputs is some reference value,
either fixed/built-in, or adjustable by an extra pin?
I know I could construct such a thing, but I'm looking for something
small, minimum pins, etc., i.e. a Joerg part ;-)
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Phil Hobbs
Dec 30, 2012, 4:23:50 PM12/30/12
to
On 12/30/2012 4:08 PM, Jim Thompson wrote:
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
>
How about a TL431? ;)
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
>
If you want something faster, there's the MCP65R41T.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510 USA
+1 845 480 2058
hobbs at electrooptical dot net
http://electrooptical.net
Jim Thompson
Dec 30, 2012, 4:29:03 PM12/30/12
to
On Sun, 30 Dec 2012 16:23:50 -0500, Phil Hobbs
<pcdhSpamM...@electrooptical.net> wrote:
>On 12/30/2012 4:08 PM, Jim Thompson wrote:
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>>
>How about a TL431? ;)
>
>If you want something faster, there's the MCP65R41T.
>
>Cheers
>
>Phil Hobbs
Nope. I would have to add stuff to make that work.
<pcdhSpamM...@electrooptical.net> wrote:
>On 12/30/2012 4:08 PM, Jim Thompson wrote:
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>>
>How about a TL431? ;)
>
>If you want something faster, there's the MCP65R41T.
>
>Cheers
>
>Phil Hobbs
I need a comparator, with a couple of volts of common-mode range,
ideally with an adjustable difference between + and - inputs at the
switching point, but I can live with something fixed at between 300mV
and 500mV.
Seriously! A Joerg part ;-)
...Jim Thompson
Martin Riddle
Dec 30, 2012, 4:49:31 PM12/30/12
to
"Jim Thompson" <To-Email-Use-Th...@On-My-Web-Site.com> wrote
in message news:n1b1e8hd6s1h598j9...@4ax.com...
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
> --
Can you do anything with this window comparator?
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
> --
<http://cds.linear.com/docs/Datasheet/1042fa.pdf>
Cheers
Jim Thompson
Dec 30, 2012, 5:04:17 PM12/30/12
to
when...
Vin1 > Vin2 + delta
Both Vin1 and Vin2 can move
Tim Wescott
Dec 30, 2012, 5:09:16 PM12/30/12
to
On Sun, 30 Dec 2012 14:08:29 -0700, Jim Thompson wrote:
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
Not a Joerg part, because if it did find one he'd complain about it being
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
"boutique".
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
TTman
Dec 30, 2012, 5:21:21 PM12/30/12
to
>>>
>>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>>> when the DIFFERENCE between the two inputs is some reference value,
>>> either fixed/built-in, or adjustable by an extra pin?
>>>
>>> I know I could construct such a thing, but I'm looking for something
>>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>>
>>> ...Jim Thompson
>>
>
>>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>>> when the DIFFERENCE between the two inputs is some reference value,
>>> either fixed/built-in, or adjustable by an extra pin?
>>>
>>> I know I could construct such a thing, but I'm looking for something
>>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>>
>>> ...Jim Thompson
>>
>
> Right concept, but I need differential inputs, basically switch
> when...
>
> Vin1 > Vin2 + delta
>
> Both Vin1 and Vin2 can move
>
>
RS485 receivers might do the trick... but no variable delta.... delta is
> when...
>
> Vin1 > Vin2 + delta
>
> Both Vin1 and Vin2 can move
>
>
around 500mV.... ?
Maxim do a range...
Jim Thompson
Dec 30, 2012, 5:28:25 PM12/30/12
to
On Sun, 30 Dec 2012 16:09:16 -0600, Tim Wescott
<t...@seemywebsite.please> wrote:
>On Sun, 30 Dec 2012 14:08:29 -0700, Jim Thompson wrote:
>
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>
>Not a Joerg part, because if it did find one he'd complain about it being
>"boutique".
Sno-o-o-o-ort, ROTFLMAO >:-}
<t...@seemywebsite.please> wrote:
>On Sun, 30 Dec 2012 14:08:29 -0700, Jim Thompson wrote:
>
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>
>Not a Joerg part, because if it did find one he'd complain about it being
>"boutique".
Jim Thompson
Dec 30, 2012, 5:42:36 PM12/30/12
to
On Sun, 30 Dec 2012 22:21:21 -0000, "TTman" <pcw1...@ntlworld.com>
wrote:
Good idea. I'll check 'em out. Thanks!
wrote:
Michael A. Terrell
Dec 30, 2012, 6:18:38 PM12/30/12
to
Tim Wescott wrote:
>
> On Sun, 30 Dec 2012 14:08:29 -0700, Jim Thompson wrote:
>
> ?
> ? Has the usual two inputs, inverting and non-inverting, BUT it switches
> ? when the DIFFERENCE between the two inputs is some reference value,
> ? either fixed/built-in, or adjustable by an extra pin?
> ?
> ? I know I could construct such a thing, but I'm looking for something
> ? small, minimum pins, etc., i.e. a Joerg part ;-)
> ?
> ? ...Jim Thompson
>
> Not a Joerg part, because if it did find one he'd complain about it being
> "boutique".
Yeah, but he considers a 555 a boutique part.
> Not a Joerg part, because if it did find one he'd complain about it being
> "boutique".
John Larkin
Dec 30, 2012, 6:19:29 PM12/30/12
to
>On 12/30/2012 4:08 PM, Jim Thompson wrote:
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>>
>How about a TL431? ;)
>
>If you want something faster, there's the MCP65R41T.
>
>Cheers
>
>Phil Hobbs
Lots of LVDS-to-CMOS receivers have some built-in offset, ca 100 mV. All the
>> Does this comparator exist....
>>
>> Has the usual two inputs, inverting and non-inverting, BUT it switches
>> when the DIFFERENCE between the two inputs is some reference value,
>> either fixed/built-in, or adjustable by an extra pin?
>>
>> I know I could construct such a thing, but I'm looking for something
>> small, minimum pins, etc., i.e. a Joerg part ;-)
>>
>> ...Jim Thompson
>>
>How about a TL431? ;)
>
>If you want something faster, there's the MCP65R41T.
>
>Cheers
>
>Phil Hobbs
ones that we've tested behave like good r-r comparators. Cheap and fast.
--
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
Fred
Jan 3, 2013, 12:49:15 AM1/3/13
to
"Jim Thompson" <To-Email-Use-Th...@On-My-Web-Site.com> wrote in message
news:n1b1e8hd6s1h598j9...@4ax.com...
> Does this comparator exist....
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
I don't know of a part like that. The simplest solution I can think
>
> Has the usual two inputs, inverting and non-inverting, BUT it switches
> when the DIFFERENCE between the two inputs is some reference value,
> either fixed/built-in, or adjustable by an extra pin?
>
> I know I could construct such a thing, but I'm looking for something
> small, minimum pins, etc., i.e. a Joerg part ;-)
>
> ...Jim Thompson
of is a diode and resistor added to the front end of an ordinary
comparator(assuming your signals are not hi-Z).
Art
Artemus
Jan 3, 2013, 12:53:02 AM1/3/13
to
"Fred" <bo...@invalid.com> wrote in message news:kc3653$vdl$1...@dont-email.me...
and "Fred" probably isn't going to make it thru your filters.
This should.
Art
WoolyBully
Jan 3, 2013, 1:20:23 AM1/3/13
to
Fuckin' filtertards.
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