SBOS775C September 2016 – March 2019 INA302 , INA303
PRODUCTION DATA.
The typical approach to set the limit threshold voltage is to connect resistors from the two LIMITx pins to ground. The voltage developed across the RLIMIT1, RLIMIT2 resistors represents the desired fault current value at which the corresponding ALERTx pin becomes active. The values for the RLIMIT1, RLIMIT2 resistors are calculated using Equation 3:
where
NOTE
When solving for the value of RLIMIT, the voltage at the corresponding LIMITx pin as determined by the product of RLIMIT and ILIMIT must not exceed the compliance voltage of VS – 0.6 V.