The maximum power dissipation of the OPA846IDBVR is 670mW, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (θJA) of 125°C/W.
To ensure stability, it's recommended to use a compensation capacitor (CC) between the output and the inverting input pins. The value of CC depends on the gain and bandwidth requirements of the application. A good starting point is to use a 10pF to 22pF capacitor.
To minimize noise and oscillations, it's recommended to use a star-ground configuration, keep the input and output traces short and away from each other, and use a solid ground plane. Additionally, decoupling capacitors (e.g., 0.1uF and 10uF) should be placed close to the power pins.
Yes, the OPA846IDBVR can be used in a single-supply configuration. However, the input common-mode voltage range is limited to VCC-1.5V to VCC+0.5V. To ensure proper operation, the input signal should be biased within this range.
The feedback resistor values (R1 and R2) should be chosen based on the desired gain and bandwidth requirements. A good starting point is to use R1 = 1kΩ and R2 = 2kΩ for a gain of 2. The values can be adjusted to achieve the desired gain and bandwidth.
OPA846IDBVR datasheet
by Texas Instruments
