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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Elmer who wrote (62316)	6/18/1999 3:43:00 PM
From: kash johal	Read Replies (1) \| Respond to of 1576287

Elmer, Re:" The question is what's so bad about leakage currents on a desktop system?" Well there are several problems: 1. Reliability- there is a definate correlation between high leakage and MTBF. 2. Overall power consumption goes off scale. 3. Testing issues - static Idd and IDDq testing. need I go on. Regards, Kash.

To: Elmer who wrote (62316)	6/18/1999 4:18:00 PM
From: RDM	Respond to of 1576287

< Thanks but that wasn't the question. The question is what's so bad about leakage currents on a desktop system?> My guess as to why people are concerned is: Power, Manufacturing Yield and Reliability Power: If the current is small, no problem. However, subthreshold currents vary exponentially with drain voltage such that it may become larger with a small voltage change. You cannot JACK up the voltage a little will create major power problems. In longer channel devices increase in voltage has no effect on unswitched gate power. Manufacturing Yield: Some circuits such as differential transistor sense amps are adversely affect by the larger mismatched in on currents associated with them. Reliability: It will be worse, not better with more subthreshold leakage currents.