SBAS815A February 2017 – June 2017 ADS114S06 , ADS114S08
Refer to the PDF data sheet for device specific package drawings
The PGA rail flags (FL_P_RAILP, FL_P_RAILN, FL_N_RAILP, and FL_N_RAILN) in the status register (01h) indicate if the positive or negative output of the PGA is closer to the analog supply rails than 150 mV. Enable the PGA output rail detection circuit using the FL_RAIL_EN bit in the excitation current register 1 (06h). A flag going high indicates that the PGA is operating outside the linear operating or absolute input voltage range. PGA rail flags are discussed in more detail in the PGA Output Voltage Rail Monitors section.