The maximum power dissipation of the TL081ID is 670mW, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (θJA) of 125°C/W.
While the TL081ID is rated for operation up to 125°C, it's essential to consider the derating of the maximum power dissipation with temperature. Above 85°C, the maximum power dissipation decreases, and the device may not operate within specifications.
To ensure stability, it's crucial to follow proper compensation techniques, such as adding a capacitor in parallel with the feedback resistor to reduce the gain-bandwidth product. Additionally, consider the phase margin and gain margin to prevent oscillations.
The input impedance of the TL081ID is typically around 2MΩ, but it can vary depending on the specific application and operating conditions. This is important to consider when designing the input stage of your circuit.
While the TL081ID can be used as a comparator, it's not the most suitable choice due to its relatively slow slew rate (13V/μs) and limited output current (±20mA). A dedicated comparator like the LM339 or LM2901 might be a better option.
TL081ID datasheet
by Texas Instruments
