Most devices in the bio-potential family (all except ADS1293) use SPI Mode 1. This means the clock polarity (CPOL) = 0 and the clock phase (CPHA) = 1. The host MCU acts as the master controller, while the ADS129x device acts as the slave. The rising edge…
Great question! I'll use the ADS1298 for this example, but the theory can be applied to any device! To convert output codes into volts, you must first calculate the least-significant bit size or LSB. One LSB represents the voltage weight of one code…
Thanks for your post!
In general, the SCLK frequency you need will depend on the numbers of ADC channels, the number of bits per channel, and the data rate. Each device will have unique requirements depending on the mode of operation.
Check out the steps…