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Subject: 1V voltage reference

Date: 06/16/00 at 11:39 PM
Posted by: louis humble
E-mail: louishumble@yahoo.com
Message Posted:

hi All,

I want to test an 8-bit D/A converter operating with 1V power supply and i am facing the following problems:

1) I am looking for a 1V voltage reference or regulator to provide the power supply. I searched through all the major semiconductor manufacturers but they only have minimum of 1.242V voltage reference. Can someone give me some suggestion on how i can get a stable 1v voltage reference? If I just use a simple resistor voltage divider, how stable the voltage will be then?

2) I need to have a voltage scaling circuit at the input of the D/A converter to scale the 5V logic from the binary counter to 1V logic. I am thinking of using a simple voltage divider to do the scaling, but that will affect the maximum speed (which is an important parameter
that I want to test) of the D/A converter. Can anyone give me some suggestion?

Many thanks in advance. Reply to my email address pls.



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