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Generate voltage references based on one input voltage
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taofeng



Joined: 21 Mar 2006
Posts: 115
Helped: 1
Post19 Nov 2008 9:11   

Generate voltage references based on one input voltage
Hi,
In designing my PCB, I want to generate several tunable voltages, for instance A(0.6v~1.2v), B(1.5v~2.5v), ...All the reference voltages will be derived from the same input voltage Vin=3.3V.
What I can foresee now is to use voltage dividers based on tunable resistors, Is this a common way or there is any better approach ?

regards,

Jef
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LvW



Joined: 07 May 2008
Posts: 1466
Helped: 242
Location: Germany
Post19 Nov 2008 9:55   

Re: Generate voltage references based on one input voltage
Using resistive dividers the internal resistance of this "voltage source" cannot be neglected ! (In fact, it is not really a voltage source).
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