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Need help to evaluate op amp consumption on ADA4898-2

Question asked by glias on Dec 15, 2011
Latest reply on Jan 17, 2012 by glias

Hello,

I would want to know what is the method to evaluate the power consumption of preamp stage. I use a low noise amplifier (ADA4898-2 which is used +6V/-6V supply rails), and I'm not sure to understand the graph figure 4 on the datasheet : Does it means that the ADA4898 could support 3W@30°C for the ADA4898-2, does it means that for the ADA4898-2 that the power dissipation should be divide by 2 to know the power dissipation of one op amp ?

 

How can I do to estimate the consumption of a stage ? Does it exist a method ?

I hope that someone could help me.

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