Texas Instruments recommends a star-ground configuration, with the analog and digital grounds separated and connected at a single point. Additionally, place the TLV0831CDR close to the analog signal sources, and use a ground plane to reduce noise and electromagnetic interference (EMI).
When the input voltage is close to the supply voltage, the output voltage swing may be reduced. To handle this, consider using an external amplifier or buffer to boost the output signal, or use a voltage reference with a higher output voltage to increase the headroom.
The TLV0831CDR's accuracy and linearity can be affected by temperature changes. The device's offset voltage and gain error can drift with temperature, resulting in reduced accuracy. To minimize this effect, consider using temperature compensation or calibration techniques, or selecting a device with a tighter temperature coefficient.
To ensure proper powering and decoupling, use a low-ESR capacitor (e.g., ceramic or film capacitor) with a value of at least 10uF, placed as close as possible to the device's power pins. Additionally, use a separate analog power supply or a well-regulated digital power supply to minimize noise and ripple.
The recommended input impedance for the TLV0831CDR is typically in the range of 1kΩ to 10kΩ. A higher input impedance can result in reduced noise and improved common-mode rejection, but may also increase the device's settling time and reduce its bandwidth.
TLV0831CDR datasheet
by Texas Instruments
