OBones
Guest
Sat Jul 18, 2009 9:06 pm
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hours
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if I
could get a copy of it.
Thanks in advance
Olivier
Joerg
Guest
Sat Jul 18, 2009 9:44 pm
OBones wrote:
Quote:
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hours
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if I
could get a copy of it.
On the files section of the Yahoo LTSpice group there is a 6N136 model
if that helps.
--
Regards, Joerg
http://www.analogconsultants.com/
"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
OBones
Guest
Sun Jul 19, 2009 11:34 am
Joerg wrote:
Quote:
OBones wrote:
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hours
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if I
could get a copy of it.
On the files section of the Yahoo LTSpice group there is a 6N136 model
if that helps.
Indeed, I could add a transistor to mimic the darlington stage. But then
again, which value should I use?
Joerg
Guest
Sun Jul 19, 2009 12:49 pm
OBones wrote:
Quote:
Joerg wrote:
OBones wrote:
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hours
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if
I could get a copy of it.
On the files section of the Yahoo LTSpice group there is a 6N136 model
if that helps.
Indeed, I could add a transistor to mimic the darlington stage. But then
again, which value should I use?
Can't you measure one out, CTR and so on?
--
Regards, Joerg
http://www.analogconsultants.com/
"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
Nik
Guest
Mon Jul 26, 2010 12:54 pm
Quote:
OBones wrote:
Joerg wrote:
OBones wrote:
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hour
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if
I could get a copy of it.
On the files section of the Yahoo LTSpice group there is a 6N136 mode
if that helps.
Indeed, I could add a transistor to mimic the darlington stage. But the
again, which value should I use?
Can't you measure one out, CTR and so on?
Regards, Joerg
Hi ! I don't know if it will help, but I found a Hewlett-Packar
optoelectronics applications manual (c) 1977 which mentions (p 3.7) tha
the LED => photo-diode CTR is ~0.0015 (~0.15%) across the range of simila
devices.
Looking at datasheet for the accessible base 6n136, 0.16% is quoted. Thi
suggests that we could use either figure for 6n139 with some confidence.
Collecting enough 6n139 Q1 & Q2 Hfe values to be statistically significan
is, of course, another matter...
Nik
---------------------------------------
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John Larkin
Guest
Mon Jul 26, 2010 2:55 pm
On Mon, 26 Jul 2010 06:54:04 -0500, "Nik"
<Nik_2213_at_n_o_s_p_a_m.yahoo.co.uk> wrote:
Quote:
OBones wrote:
Joerg wrote:
OBones wrote:
Hello all,
I'm looking for a SPICE model of the 6N139 and despite numerous hours
searching on the web, I could not find one.
If someone has such a model at hand, I would very much appreciate if
I could get a copy of it.
On the files section of the Yahoo LTSpice group there is a 6N136 model
if that helps.
Indeed, I could add a transistor to mimic the darlington stage. But then
again, which value should I use?
Can't you measure one out, CTR and so on?
Regards, Joerg
Hi ! I don't know if it will help, but I found a Hewlett-Packard
optoelectronics applications manual (c) 1977 which mentions (p 3.7) that
the LED => photo-diode CTR is ~0.0015 (~0.15%) across the range of similar
devices.
Looking at datasheet for the accessible base 6n136, 0.16% is quoted. This
suggests that we could use either figure for 6n139 with some confidence.
Collecting enough 6n139 Q1 & Q2 Hfe values to be statistically significant
is, of course, another matter...
Nik
We recently made our own optocouplers by epoxying an Osram
surface-mount IR LED to an Osram TO-92 photodiode. CTR is 23%.
John
Nik
Guest
Wed Aug 11, 2010 12:03 am
"Collecting enough 6n139 Q1 & Q2 Hfe values to be statisticall
significant
is, of course, another matter..."
;-)
FWIW, I've hooked the chips up to an Atlas component mini-analyser. There'
a slight drift in Beta (hFE) readings if repeated, but usually no more tha
+/- 1%.
Number in sample = 25.
Mean = 101.1
Range 92 ~~110
SD(n-1) = 5.0
.......
Then, given the LED --> PhotoDiode CTR = ~0.0016 (~0.16%)
{OptoElectronics Applications Manual (c)1977 Hewlett-Packard p3.7 and thei
6n136 model ;-}
With 6n139 LED cathode connected to Q2 emitter, and both collectors linked
the Atlas accepted it as an odd darlington, reported the beta.
Mean = 7.3,
Range 6~~9.
Calculating each Q1 beta gave
Mean = 45.1
Range 37~~53
SD(n-1) = 3.6
Disclaimer: These are based on *single* measurements points per chip
Collecting data over a range of LED currents and Vcc may give significantl
different results. I'll have to do that to get the Early voltage for Q2...
My head hurts...
---------------------------------------
Posted through
http://www.Electronics-Related.com
Nik
Guest
Wed Aug 11, 2010 12:21 am
"Collecting enough 6n139 Q1 & Q2 Hfe values to be statisticall
significant
is, of course, another matter..."
;-)
FWIW, I've hooked the chips up to an Atlas component mini-analyser. There'
a slight drift in Beta (hFE) readings if repeated, but usually no more tha
+/- 1%.
Number in sample = 25.
Mean = 101.1
Range 92 ~~110
SD(n-1) = 5.0
.......
Then, given the LED --> PhotoDiode CTR = ~0.0016 (~0.16%)
{OptoElectronics Applications Manual (c)1977 Hewlett-Packard p3.7 and thei
6n136 model ;-}
With 6n139 LED cathode connected to Q2 emitter, and both collectors linked
the Atlas accepted it as an odd darlington, reported the beta.
Mean = 7.3,
Range 6~~9.
Calculating each Q1 beta gave
Mean = 45.1
Range 37~~53
SD(n-1) = 3.6
Disclaimer: These are based on *single* measurements points per chip
Collecting data over a range of LED currents and Vcc may give significantl
different results. I'll have to do that to get the Early voltage for Q2...
My head hurts...
---------------------------------------
Posted through
http://www.Electronics-Related.com
Nik
Guest
Wed Aug 11, 2010 12:25 am
"Collecting enough 6n139 Q1 & Q2 Hfe values to be statisticall
significant
is, of course, another matter..."
;-)
FWIW, I've hooked the chips up to an Atlas component mini-analyser. There'
a slight drift in Beta (hFE) readings if repeated, but usually no more tha
+/- 1%.
Number in sample = 25.
Mean = 101.1
Range 92 ~~110
SD(n-1) = 5.0
.......
Then, given the LED --> PhotoDiode CTR = ~0.0016 (~0.16%)
{OptoElectronics Applications Manual (c)1977 Hewlett-Packard p3.7 and thei
6n136 model ;-}
With 6n139 LED cathode connected to Q2 emitter, and both collectors linked
the Atlas accepted it as an odd darlington, reported the beta.
Mean = 7.3,
Range 6~~9.
Calculating each Q1 beta gave
Mean = 45.1
Range 37~~53
SD(n-1) = 3.6
Disclaimer: These are based on *single* measurements points per chip
Collecting data over a range of LED currents and Vcc may give significantl
different results. I'll have to do that to get the Early voltage for Q2...
My head hurts...
---------------------------------------
Posted through
http://www.Electronics-Related.com
Nik
Guest
Wed Aug 11, 2010 1:24 am
"Collecting enough 6n139 Q1 & Q2 Hfe values to be statisticall
significant
is, of course, another matter..."
;-)
FWIW, I've hooked the chips up to an Atlas component mini-analyser. There'
a slight drift in Beta (hFE) readings if repeated, but usually no more tha
+/- 1%.
Number in sample = 25.
Mean = 101.1
Range 92 ~~110
SD(n-1) = 5.0
.......
Then, given the LED --> PhotoDiode CTR = ~0.0016 (~0.16%)
{OptoElectronics Applications Manual (c)1977 Hewlett-Packard p3.7 and thei
6n136 model ;-}
With 6n139 LED cathode connected to Q2 emitter, and both collectors linked
the Atlas accepted it as an odd darlington, reported the beta.
Mean = 7.3,
Range 6~~9.
Calculating each Q1 beta gave
Mean = 45.1
Range 37~~53
SD(n-1) = 3.6
Disclaimer: These are based on *single* measurements points per chip
Collecting data over a range of LED currents and Vcc may give significantl
different results. I'll have to do that to get the Early voltage for Q2...
My head hurts...
---------------------------------------
Posted through
http://www.Electronics-Related.com
