The ADS1120IPWR requires careful layout and placement to minimize noise and ensure accurate conversions. TI recommends placing the device close to the analog signal source, using a solid ground plane, and keeping analog and digital traces separate. Additionally, decoupling capacitors should be placed close to the device's power pins.
To optimize the ADS1120IPWR's performance, consider the following: choose the correct gain setting, adjust the sampling rate, and select the appropriate input range. Additionally, ensure proper filtering and shielding to minimize noise, and consider using the device's built-in calibration features.
The recommended power-up sequence for the ADS1120IPWR is to first apply the analog power supply (AVDD), followed by the digital power supply (DVDD), and finally the clock signal. This sequence helps prevent latch-up and ensures proper device operation.
The ADS1120IPWR's digital output data is available in a 24-bit, two's complement format. To handle the data, ensure your microcontroller or processor can accommodate the 24-bit data width, and consider using a FIFO or buffer to handle the data stream.
The ADS1120IPWR is available in a QFN package, which has a thermal pad that must be connected to a solid ground plane to ensure proper heat dissipation. Additionally, ensure good airflow around the device, and consider using thermal vias or heat sinks if operating in high-temperature environments.
ADS1120IPWR datasheet
by Texas Instruments
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