A good PCB layout for OPA4243EA/2K5 involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the device. TI provides a recommended layout in the datasheet and application notes.
The gain resistors (Rf and Rg) should be chosen based on the desired gain, input impedance, and noise requirements. TI provides a gain resistor calculator tool and application notes to help with the selection process.
The maximum power dissipation of OPA4243EA/2K5 is dependent on the ambient temperature and package type. For the 2K5 package, the maximum power dissipation is approximately 1.4W at 25°C ambient temperature. See the datasheet for more information.
OPA4243EA/2K5 is specified for operation from -40°C to 125°C. However, the device's performance and reliability may degrade at high temperatures. TI recommends consulting the datasheet and application notes for guidance on high-temperature operation.
To protect OPA4243EA/2K5 from EMI, use proper shielding, grounding, and layout techniques. Additionally, consider using EMI filters or common-mode chokes on the input and output lines. TI provides application notes on EMI protection for op-amps.
OPA4243EA/2K5 datasheet
by Texas Instruments
