Integrated Device Technology, Inc. has launched its new ZSSC4175 sensor signal conditioner for dual thermocouples, which is designed for automotive exhaust system applications. It provides highly accurate amplification and sensor-specific correction of thermocouple signals to ensure very precise measurement of exhaust gas temperatures – data that is used by engine management systems to reduce harmful emissions and improve fuel economy. The ZSSC4175 is optimized for AEC-Q100 qualified automotive environments with overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, multiple diagnostic features and a -40°C to 150°C operating range. It has dual inputs for thermocouple signals and uses a 16-bit RISC microcontroller to digitally compensate for offset, sensitivity, temperature drift and nonlinearity. The ZSSC4175 stores calibration coefficients and configuration data in an integrated non-volatile memory (NVM) IC that is reliable in automotive applications. Key features of the ZSSC4175 include an internal cold junction temperature sensor that is pre-calibrated, which keeps assembly costs low as no trimming by external devices or lasers is needed. Another feature is its on-chip cold-junction compensation, which enables the ZSSC4175 to achieve best-in-class accuracy over a measurement range of -40°C to 1,250°C. It also offers N-type thermocouple calibration support by mathematical model.