ZHCSGB8C May 2017 – October 2019 TMP464
PRODUCTION DATA.
The TMP464 device can sense a fault at the D+ resulting from an incorrect diode connection. The TMP464 device can also sense an open circuit. Short-circuit conditions return a value of –256°C. The detection circuitry consists of a voltage comparator that trips when the voltage at D+ exceeds (V+) – 0.3 V (typical). The comparator output is continuously checked during a conversion. If a fault is detected, then the RxOP bit in the Remote Channel Status register is set to 1.
When not using the remote sensor with the TMP464 device, the corresponding D+ and D– inputs must be connected together to prevent meaningless fault warnings.