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.