The recommended layout and routing for the ADS8881IDGS involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the analog input traces. Additionally, the device should be placed close to the analog signal sources, and the digital output traces should be routed away from the analog input traces to minimize digital noise coupling.
To optimize the performance of the ADS8881IDGS in noisy environments, use a low-pass filter at the analog input, use a shielded cable for the analog input, and consider using a common-mode filter or a differential amplifier to reject common-mode noise. Additionally, ensure that the device is properly decoupled and that the power supply is clean and well-regulated.
The maximum sampling rate of the ADS8881IDGS is 1 MSPS, but this can be limited by the system's clock frequency, the analog input bandwidth, and the digital output data rate. The device can operate at higher sampling rates, but this may require additional external circuitry and careful system design.
To ensure the accuracy and linearity of the ADS8881IDGS, calibrate the device using a known input signal, use a high-quality analog input signal, and ensure that the device is operated within its specified temperature range. Additionally, consider using a precision voltage reference and a low-noise power supply to minimize errors.
The power consumption of the ADS8881IDGS is typically around 15 mW, but this can vary depending on the sampling rate, input voltage range, and other factors. To minimize power consumption, operate the device at the lowest possible sampling rate, use a low-power mode if available, and consider using a low-dropout regulator to minimize power supply losses.
ADS8881IDGS datasheet
by Texas Instruments
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