Texas Instruments recommends a layout with a symmetrical, star-ground configuration, with the op-amp inputs and outputs routed away from each other and from the power supply lines. Additionally, decoupling capacitors should be placed close to the op-amp power pins.
The gain resistors should be chosen based on the desired gain and bandwidth of the amplifier. A higher gain resistor value will result in a higher gain, but may also reduce the bandwidth. Texas Instruments provides a gain resistor calculator tool to help with this selection.
The maximum power dissipation of OPA2652E/3K is 1.4W per channel, assuming a 25°C ambient temperature and a 4-layer PCB with 1oz copper. However, this value can be derated based on the specific operating conditions and PCB layout.
Yes, OPA2652E/3K can be used as a unity-gain buffer by connecting the output to the inverting input and using a gain resistor of 0Ω. However, this configuration may not provide the best noise performance, and a dedicated unity-gain buffer op-amp may be a better choice.
To minimize EMI and RFI, use a shielded enclosure, keep the op-amp inputs and outputs away from each other and from the power supply lines, and use decoupling capacitors and ferrite beads on the power supply lines. Additionally, consider using a common-mode choke or a shielded cable for the input signal.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
