Thanks a lot.
Yair
From: Jeff Heath [mailto:jheath@xxxxxxxxxx]
Sent: Wednesday, July 02, 2014 8:56 PM
To: Darshan, Yair; STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: RE: [802.3_4PPOE] Diode mismatch values
I believe it was this for the curves in this slide:
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Fairchild Semi |
S1BFSCT-ND |
We tested other diodes as well for matching data:
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Fairchild Semi |
S1BFSCT-ND |
General Purpose, 100V, 1A, SMA |
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Micro Commercial |
GS1B-LTP |
Diode, General Purpose, 100V, 1A, D0214AC |
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Fairchild Semi |
S1BFSCT-ND |
General Purpose, 100V, 1A, SMA |
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Micro Commercial |
GS1B-LTP |
Diode, General Purpose, 100V, 1A, D0214AC |
Regards,
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Jeff Heath |
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paper: |
402 East Carrillo Street, Suite D |
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Santa Barbara, California 93101 |
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805.965.6400 |
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805.965.1701 |
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computer: |
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From: Darshan, Yair [mailto:YDarshan@xxxxxxxxxxxxx]
Sent: Wednesday, July 02, 2014 7:46 AM
To: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_4PPOE] Diode mismatch values
Yair
I guess you meat to Annex G1?.
Yes we need this data set as well.
Please ask in next adhoc meeting for time in the agenda to discuss it and insert it to the adhoc database.
It was lab test or datasheet numbers. Do you have the diode datasheets or P/N?
Thanks
Yair
From: Jeff Heath [mailto:jheath@xxxxxxxxxx]
Sent: Wednesday, July 02, 2014 2:00 AM
To: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: [802.3_4PPOE] Diode mismatch values
Yair,
The diode mismatch parameters I your presentation show a wide variation of threshold (.39V vs .53V) and a zero difference in resistance (0.25 ohms vs 0.25 ohms).
I have included my previous lab data on just six diodes which shows just the opposite: a threshold that is very close (Varying by only 0.30V) and a resistance that is wide (0.28
ohms vs 0.40 ohms).
Given that in the short channel case, the threshold offset is the major contributor to offset currents, I think we should change the values for the diode mismatch.
Regards,
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Jeff Heath |
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paper: |
402 East Carrillo Street, Suite D |
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Santa Barbara, California 93101 |
|
voice: |
805.965.6400 |
|
fax:
|
805.965.1701 |
|
computer: |
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