Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. Use short, direct traces for the analog inputs and outputs, and avoid crossing digital signals over the analog signals. Additionally, use a common mode filter capacitor (e.g., 10nF) between the analog input pins and the analog ground pin.
The internal reference voltage can be configured using the REFSEL pin. Connect the REFSEL pin to VCC (logic high) to use the internal 2.5V reference, or connect it to GND (logic low) to use an external reference voltage. Ensure the reference voltage is stable and within the recommended range (2.0V to 2.7V) for optimal performance.
The maximum sampling rate of the ADS8860IDRCT is 1MSPS. However, the actual achievable sampling rate depends on the system's clock frequency, conversion mode, and power consumption. At higher sampling rates, power consumption increases. To minimize power consumption, consider using a lower sampling rate or enabling the device's power-down mode when not in use.
The ADS8860IDRCT outputs 16-bit digital data in a serial format. The output data is in two's complement format, with the most significant bit (MSB) first. The device uses a clock signal (SCLK) to synchronize the data transfer. Ensure the microcontroller or receiving device is configured to receive the serial data correctly, and consider using a FIFO or buffer to handle the data stream.
When selecting an external clock source, ensure it meets the device's clock frequency requirements (up to 20MHz). Choose a clock source with low jitter and noise to minimize errors. Consider using a crystal oscillator or a high-quality clock generator. Additionally, ensure the clock signal is properly terminated and routed to minimize signal degradation.
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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.
