SHT40A

SHT4xA 4th Generation, High-Accuracy, 16-bit, Automotive-Grade Relative Humidity and Temperature Sensor Features Relative humidity accuracy: up to ±2 %RH Temperature accuracy: up to ±0.2 °C VDD: (1.6 V … 3.6 V) & 2.3 V … 5.5 V I2C fast mode plus, CRC checksum Pulse-width modulation interface Designed for 85°C/85%RH reliability testing Operating range: 0…100 %RH, -40…125 °C Fully functional in condensing environment Variable power heater AEC Q100 qualification, high-reliability design Mature technology from global market leader Patented protection options General Description SHT4xA is an automotive-grade digital sensor platform for measuring relative humidity and temperature with different accuracy gradings. It fulfills demanding reliability requirements for automotive applications, such as 85°C/85%RH accelerated life tests. The sensors can be interfaced via I2C or pulse-width modulation. An integrated heater allows for advanced on-boarddiagnostics while the sensor element is designed for reliable operation in harsh conditions such as condensing environments. The four-pin dual-flat-no-leads package is suitable for surface mount technology (SMT) processing and can be ordered with a wettable flanks option. Device Overview Functional Block Diagram Products SHT40A-AD1B SHT40A-FD1B SHT40A-AW1B SHT41A-AD1B SHT41A-AW1B SHT41A-AWLB Details ±3%RH / ±0.3°C, 0x44 I2C addr., 2.3V … 5.5V ±3%RH / ±0.3°C, PWM interface, 2.3V … 5.5V ±3%RH / ±0.3°C, 0x44 I2C add...