Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the input and output traces as short as possible. Additionally, it's recommended to use a common-mode choke or a ferrite bead to filter out high-frequency noise.
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, but a good starting point is 2-5pF. Additionally, it's recommended to use a low-ESR capacitor for the power supply decoupling.
The maximum power dissipation of OPA835IRUNR is 1.4W, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (θJA) of 90°C/W. It's recommended to ensure that the device is operated within the safe operating area (SOA) to prevent overheating.
Yes, OPA835IRUNR is specified to operate from -40°C to 125°C. However, it's recommended to derate the power dissipation and ensure that the device is operated within the safe operating area (SOA) to prevent overheating. Additionally, it's recommended to use a heat sink or a thermal pad to improve heat dissipation.
To troubleshoot oscillations or instability issues, it's recommended to check the PCB layout, power supply decoupling, and compensation capacitor values. Additionally, it's recommended to use a scope to measure the output voltage and check for any signs of oscillation or ringing. If the issue persists, it's recommended to consult the Texas Instruments application notes and technical support resources.
OPA835IRUNR datasheet
by Texas Instruments
