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Spice model for 6N139

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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



---------------------------------------
Posted through http://www.Electronics-Related.com

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

elektroda.net NewsGroups Forum Index - Electronics Design - Spice model for 6N139

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