Texas Instruments recommends a star-ground topology and a symmetrical layout to minimize noise and crosstalk. Keep the analog and digital grounds separate and connect them at a single point. Use short, direct traces for the input and output signals, and avoid routing them near the digital signals.
The TLV1391IDBVT has a limited input common-mode voltage range (VCM) of 1.5V to 3.5V. Ensure that the input signal's common-mode voltage falls within this range to maintain accuracy and prevent damage. You can use a voltage divider or an op-amp to shift the input signal's common-mode voltage if necessary.
Input capacitance can affect the TLV1391IDBVT's bandwidth, noise, and distortion. Keep the input capacitance as low as possible (less than 10pF) to maintain the device's high-frequency performance. Use a low-capacitance input configuration, such as a differential input with a low-impedance source.
Use a combination of ceramic and electrolytic capacitors to decouple the power supply. Place a 0.1uF ceramic capacitor close to the device's power pins, and add a 10uF electrolytic capacitor in parallel. This will help filter out high-frequency noise and reduce the risk of oscillation.
The TLV1391IDBVT is specified to operate from -40°C to 125°C. However, the device's performance may degrade at extreme temperatures. Ensure that the operating temperature stays within the recommended range to maintain accuracy and reliability.
TLV1391IDBVT datasheet
by Texas Instruments
