Texas Instruments provides a layout guide in the datasheet, but for optimal performance, it's recommended to follow a star-grounding scheme, keep analog and digital grounds separate, and use a solid ground plane. Additionally, keep the analog input traces short and away from digital signals, and use a low-impedance power supply.
The ADS8698IDBTR has an internal calibration circuit, but it's recommended to perform an external calibration using a known voltage reference. Apply a known voltage to the input pins and measure the output code. Use this data to calculate the gain and offset errors, and then adjust the internal calibration registers accordingly.
The ADS8698IDBTR has a maximum sampling rate of 500 kSPS, but this can be limited by the system's clock frequency, analog input bandwidth, and digital output data rate. Ensure that the system's clock frequency is at least 2.5 times the sampling rate, and the analog input bandwidth is sufficient to handle the desired sampling rate.
The ADS8698IDBTR has internal overvoltage protection up to ±20 V, but it's recommended to add external protection circuitry to prevent damage from higher voltages. Use a voltage clamp or a zener diode to limit the input voltage to within the specified range.
The ADS8698IDBTR has a typical power consumption of 35 mW at 3.3 V and 500 kSPS. To reduce power consumption, consider using a lower supply voltage, reducing the sampling rate, or using the device's power-down mode when not in use.
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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.
