Texas Instruments provides a layout and routing guide in the ADS7955SDBTR evaluation module user's guide, which includes recommendations for component placement, trace routing, and grounding to minimize noise and ensure accurate conversions.
The ADS7955SDBTR has an internal calibration circuit that can be used to calibrate the device. The calibration process involves applying a known input voltage and then using the device's calibration registers to adjust the gain and offset to achieve the highest accuracy. Texas Instruments provides a calibration procedure in the device's datasheet and application notes.
The maximum sampling rate of the ADS7955SDBTR is 2 MSPS. The power consumption of the device increases with the sampling rate, and Texas Instruments provides a power consumption vs. sampling rate graph in the datasheet to help designers estimate the power consumption of their design.
The ADS7955SDBTR has internal overvoltage protection (OVP) and undervoltage protection (UVP) circuits that prevent damage to the device in case of overvoltage or undervoltage conditions on the analog input pins. The OVP and UVP circuits are enabled by default, but can be disabled through the device's configuration registers if needed.
Texas Instruments recommends using a combination of ceramic and electrolytic capacitors to decouple the power supply pins of the ADS7955SDBTR. A 10-uF ceramic capacitor and a 10-uF electrolytic capacitor in parallel are recommended for each power supply pin. Additionally, a pi-filter or a ferrite bead can be used to filter out high-frequency noise on the power supply lines.
ADS7955SDBTR datasheet
by Texas Instruments
