Part Number: ADS1292R Dear TI Experts, My customer is evaluating ADS1292R in a new project, they can hardly detect lead-off, could you kindly help to review below HW and SW and give some advice for this case? Thanks a lot. FW initiation configuration： ADS1292 _SendCommand( ADS1292 _CMD_SDATAC); ADS1292 _WriteRegister( ADS1292 _REG_CONFIG1, 0x01); // continuous conversion mode,sample rate to 250sps ADS1292 _WriteRegister( ADS1292 _REG_CONFIG2, 0xe0);//Lead-off comparators enabled ADS1292 _WriteRegister( ADS1292 _REG_LOFF, 0xd0);//75% - 25% ADS1292 _WriteRegister( ADS1292 _REG_CH1SET, 0x60);//pga = 12 ADS1292 _WriteRegister( ADS1292 _REG_CH2SET, 0x60);//pga = 12 ADS1292 _WriteRegister( ADS1292 _REG_RLD_SENS, 0x2f); ADS1292 _WriteRegister( ADS1292 _REG_LOFF_SENS, 0x0F); // Turn on both P- and N-side of all channels for lead-off sensing ADS1292 _WriteRegister( ADS1292 _REG_LOFF_STAT, 0x00); ADS1292 _WriteRegister( ADS1292 _REG_RESP1, 0x02); ADS1292 _WriteRegister( ADS1292 _REG_RESP2, 0x83); ADS1292 _WriteRegister( ADS1292 _REG_GPIO, 0x00); ADS1292 _SendCommand( ADS1292 _CMD_OFFSETCAL); nrf_delay_ms(200); Key Register configuration Reg value 01 0x01 02 0xe0 03 0xd0 04 0x60 05 0x60 06 0x2f 07 0x0f 08 0x00 09 0x02 0a 0x83 When INT comes, can hardly detect lead-off from the ADC data Channel data(24 status bits + 24 bits × 2 channels) = 72 bits read 3 byte status register (1100 + LOFF_STAT[4:0] + GPIO[1:0] + 13 '0's) LOFF_STAT[4:0] is RLD_STAT,IN2N_OFF,IN2P_OFF,IN1N_OFF,IN1P_OFF
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