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Old 17th July 2013, 10:31 PM   #1
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skouliki's Avatar
Join Date: Aug 2010
Location: Athens
Default AD1862 digital supply voltage

I've been looking the datasheet of AD1862 and the digital supply can accept voltages that range from +-5v to +-12v.
Does anyone know if there is any performance benefit feeding +-12v to digital supply?
I searched the web and couldnt find an answer
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Old 17th July 2013, 11:09 PM   #2
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JonSnell Electronic's Avatar
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Location: The Jurassic Coast, England. GB
If the Digital Chip only has to move 5Volts it it by default 2.2 times faster, due to the slew rate of a chip moving 12Volts.
That is why the fastest domestic memory chips now run at 1.2Volts from 5Volts.
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Old 18th July 2013, 12:36 PM   #3
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+-5V it is then.
Thanks Jon for your response
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