1. TL082IYDT Substitution Conclusion The TL082IYDT, a J-FET input dual op-amp, is mechanically compatible with the AD8682ARZ-REEL in terms of package (8-SOIC) and supply voltage range (6V to 36V). However, its key performance parameters differ significantly. It exhibits a much higher input offset voltage (3 mV vs. the original 350 µV) and a higher input bias current (20 pA vs. 6 pA). In applications demanding high DC precision and high input impedance—such as precision sensor amplification or high-impedance signal conditioning—the TL082IYDT would introduce substantially greater error and noise, making it unsuitable as a direct replacement. Conversely, the TL082IYDT offers a higher slew rate (16 V/µs vs. 9 V/µs), a higher gain-bandwidth product (4 MHz vs. 3.5 MHz), and a higher output current capability (40 mA vs. 12 mA). These characteristics make it suitable for general-purpose amplification scenarios requiring faster dynamic response or the ability to drive heavier loads. The trade-off is significantly higher power consumption, with a supply current of 1.4 mA compared to approximately 420 µA for the original. In summary, if the application does not demand high precision but requires greater speed or drive capability, the TL082IYDT can be considered as an alternative. However, a thorough re-evaluation of system error budget and power dissipation is mandatory.