The maximum power dissipation of the TL084CDG4 is dependent on the ambient temperature and the package type. For the DGV package, the maximum power dissipation is 840mW at 25°C. However, this value can be derated to 670mW at 50°C and 500mW at 75°C.
While the TL084CDG4 can be used as a comparator, it is not recommended due to its internal compensation capacitor, which can cause oscillations and slow down the response time. Texas Instruments recommends using a dedicated comparator like the LM339 or LM2903 for comparator applications.
The input impedance of the TL084CDG4 is typically around 2MΩ, but this value can vary depending on the frequency and the input voltage. It's recommended to use an input resistor to match the impedance and minimize input bias current effects.
The TL084CDG4 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the power dissipation and ensure proper heat sinking to prevent thermal shutdown.
While the TL084CDG4 can be used in audio applications, it may not be the best choice due to its relatively high noise floor and limited bandwidth. Texas Instruments recommends using audio-specific op-amps like the OPA2134 or OPA2140 for audio applications.
TL084CDG4 datasheet
by Texas Instruments
