Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Also, use short and direct traces for the analog inputs and outputs, and avoid crossing digital signals over analog signals.
Calibration involves adjusting the offset and gain of the ADC. TI recommends using an external calibration signal source and following the calibration procedure outlined in the datasheet. Additionally, using a high-accuracy voltage reference can improve overall system accuracy.
The maximum sampling rate of the ADS8924BRGET is 1 MSPS. However, the actual achievable sampling rate depends on the system clock frequency, and power consumption increases with higher sampling rates. TI recommends using a clock frequency of 20 MHz or lower to minimize power consumption.
The ADS8924BRGET has internal overvoltage protection, but it's still recommended to use external protection circuitry, such as voltage-limiting resistors and diodes, to prevent damage from excessive voltage. For undervoltage conditions, use a voltage regulator or a voltage supervisor to ensure the input voltage remains within the recommended range.
TI recommends powering up the analog supply (AVDD) before the digital supply (DVDD), and powering down in the reverse order. This ensures that the internal voltage regulators and analog circuits are properly initialized and shut down.
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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.
