SBAS633E February 2016 – August 2022 ADS8681 , ADS8685 , ADS8689
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The device features a high and a low alarm on the analog input. The alarms corresponding to the input signal have independently-programmable thresholds and a common hysteresis setting that can be controlled through the ALARM_H_TH_REG and ALARM_L_TH_REG registers.
The device sets the input high alarm when the digital output exceeds the high alarm upper limit [high alarm threshold (T)]. The alarm resets when the digital output is less than or equal to the high alarm lower limit [high alarm (T) – H – 1). This function is shown in Figure 7-21.
Similarly, the input low alarm is triggered when the digital output falls below the low alarm lower limit [low alarm threshold (T)]. The alarm resets when the digital output is greater than or equal to the low alarm higher limit [low alarm (T) + H + 1]. This function is shown in Figure 7-22.