Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep analog and digital signals separate. Use short, direct traces for analog signals and avoid crossing digital signals over analog signals. Also, use a common mode filter and a low-pass filter to reduce noise.
The gain settings depend on the amplitude of the input signal. For small signals, use a higher gain (e.g., 12 dB) to amplify the signal. For larger signals, use a lower gain (e.g., 0 dB) to avoid saturation. You can also use the PGA (Programmable Gain Amplifier) to adjust the gain dynamically.
Use a high-quality clock source with low jitter (e.g., a crystal oscillator) and ensure the clock signal is properly terminated. You can also use the internal clock oscillator, but this may introduce more noise and jitter.
Perform a system calibration by applying a known input signal and adjusting the offset and gain settings to achieve the desired output. You can also use the built-in calibration modes (e.g., internal calibration, external calibration) to simplify the process.
Use a low-noise power supply with a high power supply rejection ratio (PSRR). Decouple the power supply lines with a combination of ceramic and electrolytic capacitors. Place the decoupling capacitors close to the device and use a solid ground plane to reduce noise.
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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.
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