A good PCB layout for OPA357AIDDA involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the power pins. Additionally, it's recommended to use a symmetrical layout to minimize thermal gradients and noise.
The choice of gain resistors depends on the desired gain, bandwidth, and noise requirements of your application. A good starting point is to use the gain resistor values recommended in the datasheet, and then adjust them based on your specific requirements. It's also important to consider the resistor's tolerance, temperature coefficient, and parasitic capacitance.
The maximum power dissipation of OPA357AIDDA is limited by its junction temperature, which should not exceed 150°C. To calculate the power dissipation, you need to consider the output current, voltage, and package thermal resistance. A good rule of thumb is to keep the power dissipation below 500mW to ensure reliable operation.
To protect OPA357AIDDA from EMI, use a shielded enclosure, keep the input and output traces short, and use a common-mode choke or ferrite bead on the input lines. Additionally, consider using a low-pass filter or a shielding material around the device to reduce radiated emissions.
The recommended operating voltage range for OPA357AIDDA is 2.7V to 5.5V. Operating the device outside this range may affect its performance, stability, and reliability. It's also important to ensure that the voltage supply is clean and well-regulated to minimize noise and distortion.
OPA357AIDDA datasheet
by Texas Instruments
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