Texas Instruments provides a recommended PCB layout in the OPA735 datasheet, which includes guidelines for component placement, trace routing, and grounding. Following this layout can help minimize noise, reduce parasitic capacitance, and ensure optimal performance.
The output capacitor should be chosen based on the desired closed-loop bandwidth, output impedance, and stability requirements. A general rule of thumb is to use a capacitor with a value between 10nF to 100nF, and a voltage rating that exceeds the maximum output voltage of the op-amp.
The OPA735AIDBVRG4 is specified to operate from -40°C to 125°C, but it's essential to consider the device's thermal characteristics, such as junction temperature and thermal resistance, to ensure reliable operation in high-temperature environments.
To reduce noise and EMI, use proper PCB layout techniques, such as separating analog and digital grounds, using shielding, and minimizing trace lengths. Additionally, consider using filters, such as RC filters or ferrite beads, to reduce high-frequency noise.
The recommended input impedance for OPA735AIDBVRG4 is typically in the range of 1kΩ to 10kΩ. This ensures that the input signal is not attenuated and that the op-amp can maintain its specified performance.
OPA735AIDBVRG4 datasheet
by Texas Instruments
