SLVSFE3B November 2020 – May 2021 TPS2661
TPS26611 can be used for protection of multiplexed inputs in an Analog Input module as shown in Figure 9-8. For this configuration, connect the IN pin of TPS26611 to one channel of the ADC for voltage measurement and connect OUT pin of TPS26611 to the other channel of ADC for current measurement. EN pin of TPS26611 can be used to swtch between current and voltage measurements. With EN = 0, the internal FETs of TPS26611 are turned off and voltage signal can be measured by ADC between AIN0 and AINCOM pins. Whereas with EN = 1, the internal FETs of TPS26611 are turned on and current signal can be measured by ADC between AINx and AINCOM pins.