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EL7900

saying

You're so full of it you believe your own baloney.

You're certainly one sick puppy, the epitome of Napoleonic runtism.

Look for my post, it's there.

So far, all you've presented is BS. ...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.
Reply to
Jim Thompson
Loading thread data ...

quoted text -

Sure, actually easier with CMOS than bipolar, simple example (really high currents, 100nA and 200nA :)...

formatting link

And you can make _really_ high quality mirrors by using cascoding techniques.

Although I've done a number of circuits that received input from photodiodes, even a project where Hobbs was involved (and currents were specified), I've never included a photodiode on-chip, so I didn't know the conversion factors. Now Larkin will make a lot about that, since he can't actually understand the circuit, he'll throw buckets of shit into the air. ...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.
Reply to
Jim Thompson

would

saying

M=11, and you don't know why!

Pitiful.

--

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
Reply to
John Larkin

quoted text -

You haven't figured out how to find M yet, which is a necessary first step. It's obvious. Pitiful.

--

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
Reply to
John Larkin

would

saying

Because I don't work with photodiodes, and didn't know the conversion factor from Lux to electrons??

But I do know the circuit workings and you don't.

Anyone lurking here with half-a-brain knows you're not only a Napoleonic runt, you're a fake as well.

Finally josephkk has gotten on your case... for posting inadequately documented claims.

Maybe others will join in, though I doubt it. You have everyone buffaloed to the point of fear, like that Faro dealer in the movie "Tombstone", until Wyatt Earp came along and grabbed him by the ear and tossed his ass on the street.

One of these days your ass _will_be_ tossed :-)

YOU sure ARE pitiful. Cluck, cluck, JERK. ...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.
Reply to
Jim Thompson

ohm.

quoted text -

See folks, more inconsequential shit ;-) ...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.
Reply to
Jim Thompson

df

562 ohm.

mA,

the

ll

8 V)
a

t is

any

ut

=A0 =A0 =A0 ...Jim Thompson

=A0 =A0 =A0| =A0 =A0mens =A0 =A0 |

=A0 =A0 | =A0 =A0 et =A0 =A0 =A0|

=A0 =A0|

=A0 =A0 =A0 =A0 |

=A0|

|

.- Hide quoted text -

=A0 =A0...Jim Thompson

any M would work for a simple sim to illustrate the problem I think

Version 4 SHEET 1 1744 680 WIRE 576 -80 448 -80 WIRE 768 -80 576 -80 WIRE 16 -64 -112 -64 WIRE 208 -64 16 -64 WIRE 576 -48 576 -80 WIRE 16 -32 16 -64 WIRE 448 48 448 -80 WIRE 768 48 768 -80 WIRE -112 64 -112 -64 WIRE 208 64 208 -64 WIRE 576 64 576 32 WIRE 720 64 576 64 WIRE 16 80 16 48 WIRE 160 80 16 80 WIRE 768 176 768 144 WIRE 896 176 768 176 WIRE 1040 176 896 176 WIRE 208 192 208 160 WIRE 336 192 208 192 WIRE 768 192 768 176 WIRE 896 192 896 176 WIRE 1040 192 1040 176 WIRE 208 208 208 192 WIRE 336 208 336 192 WIRE 832 208 816 208 WIRE 848 208 832 208 WIRE 992 208 848 208 WIRE 272 224 256 224 WIRE 288 224 272 224 WIRE 1040 288 896 288 WIRE 768 304 768 288 WIRE 832 304 832 208 WIRE 832 304 768 304 WIRE 208 320 208 304 WIRE 272 320 272 224 WIRE 272 320 208 320 WIRE 768 320 768 304 WIRE 896 320 896 288 WIRE 208 336 208 320 WIRE 336 336 336 304 WIRE 768 432 768 400 WIRE 896 432 896 400 WIRE 208 448 208 416 WIRE 336 448 336 416 FLAG 208 448 0 FLAG 336 448 0 FLAG -112 144 0 FLAG 768 432 0 FLAG 896 432 0 FLAG 448 128 0 SYMBOL pmos 160 160 M180 SYMATTR InstName M1 SYMATTR Value BSS84 SYMBOL pmos 288 304 M180 SYMATTR InstName M2 SYMATTR Value BSS84 SYMBOL pmos 256 304 R180 SYMATTR InstName M3 SYMATTR Value BSS84 SYMBOL voltage -112 48 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL current 208 336 R0 WINDOW 3 -261 36 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value PULSE(0 10m 0 1 0) SYMBOL res 320 320 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL voltage 16 -48 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 2.355 SYMBOL pmos 720 144 M180 SYMATTR InstName M4 SYMATTR Value BSS84 SYMBOL pmos 848 288 M180 SYMATTR InstName M5 SYMATTR Value BSS84 SYMBOL pmos 816 288 R180 SYMATTR InstName M6 SYMATTR Value BSS84 SYMBOL voltage 448 32 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 5 SYMBOL current 768 320 R0 WINDOW 3 -261 36 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I2 SYMATTR Value PULSE(0 10m 0 1 0) SYMBOL res 880 304 R0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL voltage 576 -64 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 2.355 SYMBOL pmos 992 288 M180 SYMATTR InstName M7 SYMATTR Value BSS84 TEXT -50 472 Left 2 !.tran 1

Reply to
langwadt

ohm.

quoted text -

And you don't need to know M at all to understand Why it collapses. ...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.
Reply to
Jim Thompson

would

saying

What is the mirror ratio M, old fart? Haven't you figured it out yet?

--

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
Reply to
John Larkin

ohm.

quoted text -

You do have to know M (which you still can't figure out!) to see How it collapses. Given M=11 and the circuit model on the data sheet, the "collapse" isn't anything like what Marco is seeing.

Plug 11 into your model and crank out some graphs. That might give you a little insight.

--

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
Reply to
John Larkin

ohm.

quoted text -

Note how gradual the "collpse" is... not what Marco is reporting. And you have carefully tuned V2/V4 to make it so. Try setting them to 5 volts, and make the mirror ratio 11.

--

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
Reply to
John Larkin

would

saying

Yes. I finally read the data sheet. Happy? I doubt it. You don't have any clue what "happy" is all about. ...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.
Reply to
Jim Thompson

ohm.

quoted text -

I've done all that. My suspicion is that the "cartoon" is lacking, and that the real arrangement is a cascode... which would make sense. ...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.
Reply to
Jim Thompson

ohm.

quoted text -

Yes, already noted, that's why I opine that it's a cascode and switched differently than the "cartoon".

Of course the OP's measurements may be "loose" ;-) ...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.
Reply to
Jim Thompson

Il 02/09/2012 04:01, Jim Thompson ha scritto:

I don't have a calibrated light source, indeed. What I've noticed is that if I approach the lamp slowly the current increases slowly too.

After reaching the maximum values (reported in other posts, depending on Vsupply and Rload) closing further the lamp (few cm) leads to a very fast collapse of the output current.

I know it's a qualitative measurement, but the collapse seems to have a quite sharp edge.

Marco

Reply to
Marco Trapanese

562 ohm.

mA,

V)

is

any

Hide quoted text -

As usual, we'll have to take your word for that. You never post anything with content.

--

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
Reply to
John Larkin

Marco,

With a fairly hi-Z load to ground, 10K maybe, does the output voltage collapse at high illumination?

You should probably dump this part and use matrixed photodiodes. That's a board redesign, but probably a good long-term investment.

--

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
Reply to
John Larkin

562 ohm.

mA,

the

V)

is

any

Hide quoted text -

Me? I never lie, it's too hard to remember the current tale.

You? Anything to support your Napoleonic demeanor. ...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.
Reply to
Jim Thompson

That fits with my theory that the mirror is a cascode. ...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.
Reply to
Jim Thompson

Il 02/09/2012 17:14, John Larkin ha scritto:

Tomorrow I'll try and I'll report the results.

That's what I'm going to do.

Marco

Reply to
Marco Trapanese

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