The ADS1294IPAG is a high-impedance device, so it's crucial to minimize noise and interference. Place the device close to the electrodes, use a solid ground plane, and keep analog and digital traces separate. Refer to the TI application note 'PCB Layout Guidelines for the ADS1294' for more information.
The ADS1294IPAG has programmable gain settings. To optimize gain, start with the default settings and adjust based on your signal amplitude. Use the device's internal calibration signals to measure noise floor and adjust gain accordingly. Refer to the datasheet's 'Gain Settings' section for more information.
Use a combination of analog and digital filtering techniques. The ADS1294IPAG has built-in filters, but you may need additional external filtering. Implement a notch filter to remove power line noise (50/60 Hz) and use digital filters (e.g., IIR/FIR) to remove high-frequency noise. Consider using a right-leg drive (RLD) circuit to reduce common-mode noise.
Follow proper PCB design and layout practices, such as using a solid ground plane, separating analog and digital circuits, and using shielding and filtering components. Ensure that your design meets the relevant EMC standards (e.g., IEC 60601-1-2) and perform EMC testing to validate your design.
The ADS1294IPAG has a typical power consumption of 13.5 mW (VDD = 3.3 V, fCLK = 2 MHz). Ensure proper thermal design and heat dissipation in your system. The device's junction temperature (TJ) should not exceed 150°C. Refer to the datasheet's 'Power Consumption' and 'Thermal Information' sections for more information.
ADS1294IPAG datasheet
by Texas Instruments
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