Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good high-frequency design practices, such as using a solid ground plane, minimizing trace lengths, and avoiding vias under the device. Additionally, ensure that the analog and digital grounds are separated and connected at a single point.
To minimize high-frequency noise and EMI, use a shielded enclosure, and ensure that the TMUX2889YBHR is placed away from noise sources. Use a common-mode choke or ferrite bead on the input lines, and consider adding a pi-filter or a common-mode filter to reduce EMI. Also, use a low-ESR capacitor for power supply decoupling.
The TMUX2889YBHR is rated for operation from -40°C to 125°C. However, it's essential to consider the derating of the device's performance and power consumption at higher temperatures. Ensure that your design takes into account the thermal management and heat dissipation requirements.
To configure the TMUX2889YBHR for differential signaling, connect the positive and negative input signals to the corresponding pins (e.g., IN1P and IN1N). Ensure that the input signals are properly terminated, and the common-mode voltage is within the recommended range. Refer to the datasheet for specific configuration and termination guidelines.
Use a low-ESR capacitor (e.g., 100 nF to 1 μF) with a voltage rating that matches the power supply voltage. Place the decoupling capacitor as close as possible to the device's power pins, and ensure that the capacitor's ESL (Equivalent Series Inductance) is minimized to reduce high-frequency noise.
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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.
