The ADS1211E 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 ADS1211E'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 interference. TI provides application notes and evaluation modules to help with optimization.
The ADS1211E outputs 24-bit data, which can be processed using a microcontroller or FPGA. To handle the data, use a serial interface (SPI or I2C) to read the output, and consider using a FIFO or buffer to manage data transfer. Ensure proper synchronization and data formatting to avoid errors.
Calibration is crucial for high accuracy. TI recommends a two-point calibration process: zero-scale calibration and full-scale calibration. Use a high-accuracy voltage reference and ensure the device is in a stable thermal environment during calibration. Refer to the datasheet and application notes for detailed calibration procedures.
The ADS1211E requires a clean and stable power supply. Use a low-noise, low-dropout regulator (LDO) and decouple the power pins with 10-100 nF capacitors. Place decoupling capacitors close to the device's power pins and ensure a solid ground plane to minimize noise and interference.
ADS1211E datasheet
by Texas Instruments
