The maximum power dissipation of the TL084CDRG4 is 670mW at 25°C free-air temperature, and it can be calculated using the formula: Pd = (TJ - TA) / θJA, where TJ is the junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance.
To ensure stability in a unity-gain buffer configuration, it's recommended to add a capacitor (typically 10-100pF) between the output and the inverting input to prevent oscillations. Additionally, ensure that the layout is well-designed to minimize parasitic capacitance and inductance.
To minimize noise and EMI, it's recommended to follow good PCB layout practices, such as keeping the input and output traces separate, using a ground plane, and minimizing loop areas. Additionally, place the TL084CDRG4 close to the signal source, and use decoupling capacitors (typically 0.1uF) between the power supply pins and ground.
The TL084CDRG4 is rated for operation up to 125°C, but its performance may degrade at high temperatures. If you need to operate the device at high temperatures, ensure that you follow the recommended derating guidelines and consider using a heat sink to maintain a safe junction temperature.
The choice of resistor values depends on the desired gain, bandwidth, and input impedance. A good starting point is to use the recommended values from the datasheet or application notes, and then adjust them based on your specific requirements. Ensure that the resistors are of high quality and have low tolerance to minimize errors.
TL084CDRG4 datasheet
by Texas Instruments
