Texas Instruments provides a layout and routing guide in the application note SLAA523, which recommends keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the analog input traces.
The ADS8318IBDGSR has an internal calibration circuit that can be used to calibrate the device. The calibration process involves applying a known input voltage and then reading the output code. The device can then be calibrated by adjusting the internal offset and gain registers.
The maximum sampling rate of the ADS8318IBDGSR is 100 kSPS. However, the actual sampling rate may be limited by the system clock frequency, the conversion time, and the settling time of the analog input signal.
Yes, the ADS8318IBDGSR can be used in a multiplexed configuration. The device has a built-in multiplexer that allows up to 8 analog input channels to be connected to the ADC. The multiplexer can be controlled using the chip select (CS) and multiplexer address (MUX[2:0]) pins.
The power consumption of the ADS8318IBDGSR is typically around 15 mW at a supply voltage of 3.3 V. The power consumption can be reduced by using the power-down mode, which reduces the power consumption to around 1 μW. The power-down mode can be enabled by setting the PD pin high.