For optimal performance, it is recommended to follow good PCB design practices, such as keeping the input and output traces short and away from noise sources, using a solid ground plane, and decoupling the power supply pins with 0.1uF capacitors. Additionally, the datasheet provides a recommended layout diagram that can be used as a starting point.
To prevent oscillations due to the high slew rate of the OPA680U, it is recommended to use a compensation capacitor (typically 10-100pF) between the output and the inverting input pins. This helps to reduce the phase shift and prevent oscillations. Additionally, ensuring a low-impedance output load and using a stable power supply can also help to prevent oscillations.
The OPA680U can drive capacitive loads up to 1nF without oscillating, but it is recommended to limit the capacitive load to 100pF or less to ensure stable operation. If a larger capacitive load is required, a series resistor can be added to dampen the load and prevent oscillations.
To protect the OPA680U from overvoltage and ESD damage, it is recommended to use voltage clamping devices such as TVS diodes or zener diodes on the input and output pins. Additionally, following proper ESD handling procedures and using ESD-protected workstations can help to prevent damage during handling and assembly.
The OPA680U has a thermal derating of 13.9mW/°C above 25°C. This means that the maximum power dissipation of the device decreases as the ambient temperature increases. To ensure reliable operation, the maximum power dissipation should be calculated based on the expected ambient temperature and the thermal derating factor.
OPA680U datasheet
by Texas Instruments
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