ADA4807-2 become very heat when it put-in a ±5v circuit,but AD8762 is normal。
Could you share your schematic? We can start with that so we can troubleshoot your circuit and see what causes the problem. How hot does your device get?
You can also approximate your junction temperature using the formula below:
where. TA is the ambient temp, Theta-JA is given in the datasheet and PD is power dissipation using the formula:
Isy x Vsy refers to the quiescent power dissipation.
Iload x (Vsy - Vout) is the power dissipation at the output stage of the transistor.
Also, you have to multiply Pd depending on the number of channels you are using.
If you have any clarifications, please let us know.
Do you mean that your input pins are floating? It is not recommended that the inputs are left floating, the input bias current will need a path to flow and floating the inputs will cause it to be on an undefined state. Try giving your inputs a defined source or tie it up to GND.