The maximum power dissipation of the TL082ID 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 TL082ID 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 consider the phase margin and gain margin. The TL082ID has a phase margin of 60° and a gain margin of 10dB, which makes it suitable for most feedback loop applications. However, it's still important to analyze the loop gain and phase response to ensure stability.
The input impedance of the TL082ID is typically around 10^12 Ω (1 TΩ) in common-mode, and 10^9 Ω (1 GΩ) in differential-mode. This high input impedance makes the TL082ID suitable for high-impedance sources.
While the TL082ID can be used as a comparator, it's not the most suitable device for this application. The TL082ID is an op-amp designed for linear applications, and its output stage is not optimized for high-speed switching. For comparator applications, consider using a dedicated comparator IC like the LM339 or LM393.
TL082ID datasheet
by Texas Instruments
